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| Standard ID | GB 23864-2023 (GB23864-2023) | | Description (Translated English) | Firestop material | | Sector / Industry | National Standard | | Classification of Chinese Standard | C84 | | Classification of International Standard | 13.220.50 | | Word Count Estimation | 26,264 | | Date of Issue | 2023-12-28 | | Date of Implementation | 2024-07-01 | | Older Standard (superseded by this standard) | GB 23864-2009 | | Administrative Organization | Ministry of Emergency Management of the People's Republic of China | | Proposing organization | Ministry of Emergency Management of the People's Republic of China | | Issuing agency(ies) | State Administration for Market Regulation, National Standardization Administration | | Standard ID | GB 23864-2009 (GB23864-2009) | | Description (Translated English) | Firestop material | | Sector / Industry | National Standard | | Classification of Chinese Standard | C84 | | Classification of International Standard | 13.220.50 | | Word Count Estimation | 25,287 | | Date of Issue | 2009-06-01 | | Date of Implementation | 2010-02-01 | | Older Standard (superseded by this standard) | GA 161-1997 | | Quoted Standard | GB/T 2408-2005; GB/T 2611; GB/T 5455; GB/T 7019-1997; GB/T 8333; GB/T 9978.1; GA 304-2001 | | Drafting Organization | Ministry of Public Security Sichuan Fire Research Institute | | Administrative Organization | Seventh National Fire Protection Standardization Technical Committee Technical Committee | | Regulation (derived from) | Announcement of Newly Approved National Standards No. 7, 2009 (No. 147 overall) | | Proposing organization | People's Republic of China Ministry of Public Security | | Issuing agency(ies) | Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China; Standardization Administration of China | | Summary | This Chinese standard specifies the fire blocking material terms and definitions, classification and marking, requirements, test methods, inspection rules, comprehensive evaluation criteria and packaging, labeling, storage, transport and so on. This standard applies to buildings, structures, and various types of facilities throughout the holes, gaps are constructed using fire blocking material or fire sealing components, architectural fittings for internal use fireproof intumescent seals and PVC construction Fire Ring drains excluded. |
GB 23864-2023.Fire blocking materials
National Standard of the People's Republic of China
Replaces GB 23864-2009
Fire blocking materials
Released on 2023-12-28
2024-07-01 Implementation
State Administration for Market Regulation
The National Standardization Administration issued
1 Scope
This document specifies the classification and marking, requirements, test methods, inspection rules, and packaging, marking, storage, and transportation of fire blocking materials.
This document applies to fireproof sealing materials used in various through holes and structural gaps in industrial and civil buildings, structures and facilities.
Materials or fire blocking components.
This document does not apply to fire-resistant expansion seals used inside building accessories and firestop rings for rigid polyvinyl chloride building drainage pipes.
2 Normative references
The contents of the following documents constitute essential clauses of this document through normative references in this document.
For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to
This document.
GB/T 2611 General technical requirements for testing machines
GB/T 5455 Combustion performance of textiles - Determination of vertical damage length, smoldering and afterflaming time
GB/T 7019-2014 Test methods for fiber cement products
GB/T 7106 Test methods for air tightness, water tightness and wind pressure resistance of exterior doors and windows of buildings
GB 8624 Classification of combustion performance of building materials and products
GB/T 8626 Test methods for flammability of building materials
GB/T 9978.1 Fire resistance test methods for building components Part 1.General requirements
GB/T 20285 Hazard classification of smoke toxicity of materials
XF/T 714-2007 Rapid temperature rise fire resistance test method for fire protection materials for components
3 Terms and definitions
The following terms and definitions apply to this document.
4 Classification and labeling
4.1 Classification
4.1.1 Fireproof plugging materials can be divided into. fireproof plugging materials for holes, fireproof plugging materials for gaps, fireproof plugging materials for plastic pipes
There are three major categories of materials.
a) Fireproof plugging materials for holes are used to seal and plug holes in penetrating structures and are denoted by code K.
b) Fireproof sealing materials for gaps are used between fireproof partition components or between fireproof partition components and other components (such as expansion joints,
Sealing and plugging of gaps (such as settlement joints, seismic joints and structural gaps) is represented by code F. Such as fireproof sealants, gap plugging
Material.
c) Fireproof sealing materials for plastic pipes are used to seal and plug plastic pipes when they pass through holes in walls, floors, etc.
S means.
4.1.2 Classification by place of use.
a) Fireproof sealing materials for important public buildings. used for fires that may cause heavy casualties, property losses and serious social impacts
The fireproof sealing materials used in public buildings are indicated by code Z.
b) Fireproof sealing materials for ordinary industrial and civil buildings, structures and facilities. used for industrial and civil buildings other than important public buildings.
Fireproof sealing materials used in buildings, structures and facilities are denoted by code P.
4.1.3 Fire blocking materials are classified according to the composition and shape characteristics of the product.
a) Flexible organic plugging material. It uses organic materials as binders and has a certain degree of flexibility or plasticity when used. The product is a clay-like object.
Code R indicates.
b) Inorganic plugging material. a powdered solid with inorganic materials as the main component, which has appropriate workability when mixed with additives.
Code W indicates.
c) Fire barrier bag. a bag-shaped object made of fireproof materials, suitable for fireproof sealing of larger holes or fireproof separation of cable trays
(Fire barrier bag is also called fire-resistant bag or fireproof bag), represented by code B.
d) Fire-blocking module. A solid with certain shape and size made of fire-blocking material, which can be easily cut and drilled.
Fireproof sealing of holes or cable trays is represented by code M.
e) Fireproof sealing board. The board is made of fireproof material, which can be easily cut and drilled. It is suitable for fireproof sealing of large holes.
Code C indicates.
f) Foam sealing material. a fireproof material that can expand and foam by itself after being injected into the hole to seal the hole, represented by the code P.
g) Multi-component plugging material. It is made by mixing two or more liquid materials (solid powder can be added as additive) evenly,
The fireproof material with fireproof sealing function produced after the reaction is represented by code D.
h) Gap sealing material. solid fireproof material placed in the gap to seal fixed or movable gaps, represented by code F.
i) Fireproof sealant. Liquid or paste-like fireproof material with fireproof sealing function, represented by code J.
j) Fire-blocking tape. A flexible, coilable, and curlable tape made of fire-resistant material, wrapped around the outer surface of the plastic pipe and covered with a steel tape.
Wrap or fix in other appropriate ways, expand and squeeze softened pipes after fire, and seal the plastic pipes left by burning or softening
Holes are represented by the code T.
4.2 Marking
The corresponding relationship between the names, codes and uses of various fire-proof sealing materials is shown in Table 1.
5 Requirements
5.1 General
5.1.1 No asbestos or other substances harmful to the human body shall be added to the plugging material.
5.1.2 For plugging products that are in liquid form during construction, the initial setting time range shall be clearly stated in the product instructions.
The product is dried and solidified under natural environmental conditions within the specified curing period.
5.1.3 There is no irritating odor after the sealing material is completely dry.
5.2 Physical and chemical properties
5.2.1 Flexible organic plugging materials, inorganic plugging materials, fire-blocking bags, fire-blocking modules, fire-blocking panels, foam plugging materials and multi-component plugging materials
The physical and chemical properties should comply with the requirements of Table 2.
5.2.2 The physical and chemical properties of gap sealing materials, fire-retardant sealants and fire-retardant tapes shall comply with the requirements of Table 3.
5.3 Combustion performance
5.3.1 Except for inorganic plugging materials, the combustion performance of other plugging materials shall meet the requirements of 5.3.2 and 5.3.3.
5.3.2 The fabric used for fire-blocking bags shall meet the following requirements.
--- Damage length is less than or equal to 150mm;
---Afterburning time is less than or equal to 5s;
---Smoldering time is less than or equal to 5s;
---Burning drops shall not cause the absorbent cotton to burn or smolder.
5.3.3 The combustion performance grade of other fire-proof sealing materials shall not be lower than Grade B2 of the building materials specified in GB 8624.
5.4 Smoke toxicity
The smoke toxicity of fireproof sealing materials used in important public buildings should not be lower than ZA2 level in GB/T 20285.
5.5 Airtightness
The air tightness of fire-proof sealing materials and fire-proof sealing components used in important public buildings should not be greater than 3.5m3/(m2·h).
5.6 Fire resistance
5.6.1 The fire resistance performance of fireproof blocking materials is classified according to different fire environment conditions as shown in Table 4.
The fire resistance (expressed by E) time is divided into three levels. 1h, 2h, and 3h. At the same time, the fire resistance integrity and fire resistance insulation (expressed by EI) time are divided into three levels. 1h, 2h, and 3h.
There are three levels. 1h, 2h and 3h.
5.6.2 The fire resistance performance of fireproof sealing materials shall comply with the requirements of Table 4.
5.7 Flushing test performance
For fire-proof sealing materials or fire-proof sealing components that require water flushing tests, water flushing tests should be carried out after the fire resistance test is completed.
During the water flushing test, the fire blocking material or fire blocking assembly should not have any holes that could cause water to flow on the back-fire surface.
6 Test methods
6.1 Physical and chemical properties
6.1.1 Apparent density
6.1.1.1 Test conditions
Density tests should be carried out at room temperature.
6.1.1.2 Test equipment
The instruments and equipment used in the test should meet the following requirements.
a) Stainless steel container. inner diameter φ50mm, height 50mm;
b) Electronic balance. range greater than 100g, accuracy 0.1g;
c) Electronic balance. range 1000g, accuracy 1g;
d) Ruler. accuracy 1mm;
e) Vernier caliper. accuracy 0.02mm;
f) Measuring cylinder. 1200mL;
g) Electric heating blast drying oven. 0℃~200℃.
6.1.1.3 Test procedure
6.1.1.3.1 Flexible organic plugging materials and fireproof sealants
Put the fireproof sealant or the evenly mixed flexible organic plugging material into a stainless steel container with an inner diameter of φ50mm and a height of 50mm.
Use a 5mm diameter stainless steel rod to tamp the entire container, and use a stainless steel plate to smooth the surface so that the upper surface is aligned with the stainless steel plate.
The upper surface of the container is in the same plane. Accurately weigh its mass m2, m2 minus the mass of the stainless steel container itself m1 is the mass of the sample.
Measure m, accurate to 0.1g.
6.1.1.3.2 Inorganic blocking materials and fire retardant packs
Place the materials in the fire-retardant package in an electric heated air drying oven and dry them at 65℃±2℃ to constant weight.
After mixing the sample (inorganic plugging material or fire-retardant bag internal material) evenly, slowly put it into a measuring cylinder with a range of not less than 1200mL until
When the volume is about 1000 mL, gently vibrate the measuring cylinder to make the sample in the measuring cylinder level with the scale line, and record the scale reading v.
Weigh the mass of the empty measuring cylinder and the mass of the measuring cylinder after being filled with the sample. The difference between the two is the mass of the sample, accurate to 0.1g.
6.1.1.3.3 Fire-blocking modules, fire-blocking panels, foam blocking materials, and multi-component blocking materials
Cut the fire-blocking module, fire-blocking board or formed foam blocking material or multi-component blocking material into two pieces of 50 mm x
50mm×20mm test pieces (or actual thickness) are weighed to the nearest 1g and their dimensions are measured to the nearest
1mm.
6.1.1.3.4 Fire-blocking tape and gap-sealing materials
Cut the fire barrier tape or gap sealing material into two 100mm×10mm×2mm test pieces (the actual width and thickness can also be
Weigh their masses to an accuracy of 1 g and measure their dimensions to an accuracy of 1 mm.
6.1.2 Compressive strength
6.1.2.1 Preparation of test specimens
Pour the prepared inorganic plugging material into a test mold with a specification of 62.5mm×40mm×40mm, tamp and smooth it, and wait until it is basically solidified.
Demoulding. The mixing and curing of the samples should be carried out according to the product instructions. The number of samples is 5.
The fire-blocking module was cut into 5 specimens with the size of 62.5 mm × 40 mm × 40 mm.
6.1.2.2 Test equipment
The test adopts a pressure testing machine that complies with the provisions of GB/T 2611.
6.1.2.3 Test procedure
Select any side surface of the test block as the compression surface and use a vernier caliper to measure the length and width of its compression section with an accuracy of 1 mm.
Place the selected test block with the pressure surface facing upward on the pressure seat of the pressure testing machine so that the center line of the test piece coincides with the center line of the pressure head of the press.
Apply load uniformly at a speed of 1500N/min~2000N/min until the specimen fails, and record the pressure reading when the specimen fails.
6.1.3 Flexural strength
The samples were processed into 5 specimens with a size of 240 mm × 100 mm.
The exposed section of the material should be sealed with the same surface material. Test and calculate the test value according to the provisions of Chapter 10 of GB/T 7019-2014.
The flexural strength of the component is expressed as the arithmetic mean of the 5 test values after eliminating the gross error, accurate to 0.01MPa.
6.1.4 Corrosiveness
6.1.4.1 Fire-blocking module
Take two Q235 ordinary carbon structural steel pipes with a length of 250mm and an outer diameter of φ30mm~φ40mm and a length of 250mm,
3 PVC insulated sheathed cables with an outer diameter of φ30mm~φ40mm, and holes with the same diameter as the steel pipe and cable are drilled on the fire-blocking module
Place the steel pipe and cable in the holes of the fire-blocking module and fix them with a clamp. The fixing method is shown in Figure 1.
Place the test piece in a test box with a relative humidity of (90±5)% and a temperature of 70℃±5℃ for 168 hours, then take out the test piece and place it in a place that is not exposed to sunlight.
Dry naturally in an environment with direct sunlight. Observe whether there is rust or corrosion at the contact point between the outer rubber layer of the steel pipe and the cable and the plugging sample.
Phenomenon.
6.1.4.2 Corrosion test of other plugging materials
Take two pieces of Q235 ordinary carbon structural steel plates with a size of 150mm×100mm×0.8mm and a 250mm long and outer diameter
3 PVC insulated sheathed cables with diameters of φ30mm~φ40mm, mix the prepared inorganic plugging materials, flexible organic plugging materials, foam plugging materials,
The component sealing material or fireproof sealant is applied to the steel plate and the outer rubber surface of the cable.
(90±5)%, 70℃±5℃ test box for 168h, take out the test piece and place it in an environment not exposed to direct sunlight.
Observe whether there is rust or corrosion at the contact points between the steel plate and the outer rubber layer of the cable and the plugging material sample.
6.1.5 Water resistance, oil resistance, acid resistance, alkali resistance, heat and humidity resistance, and freeze-thaw cycle resistance
6.1.5.1 Preparation of test specimens
Inorganic plugging materials, multi-component plugging materials, fireproof sealants. inject the prepared sample into a standard.200mm×20mm×20mm
The test mold is compacted and smoothed, and demoulding is carried out after basic solidification. After the curing period is over, the sample is sawed into 3 squares of 20mm×20mm×20mm.
The mixing and curing of the specimens shall be carried out according to the product instructions.
Flexible organic plugging material. Take a certain amount of sample, knead it evenly, and make three balls with a diameter of 20 mm each.
Fire retardant package. The sample consists of three complete packages.
Other fireproof plugging materials. Cut the sample into three test blocks of 20mm×20mm×20mm.
For materials, the exposed sections shall be sealed with the same surface material. For materials with a thickness of less than 20 mm, the thickness of the test block shall be the same as the material thickness.
Note. For fire-resistant sealants that cannot be cured, they can be applied on three 50mm×50mm×2mm stainless steel plates or polyethylene plastic plates for testing.
The coating thickness is 1mm±0.5mm.
6.1.5.2 Test procedure
6.1.5.2.1 Water resistance
Soak the prepared and cured samples in tap water at a temperature of 20°C ± 5°C and observe them every 24 hours.
Take it out and observe whether the sample is swollen or cracked, whether the fire barrier package is intact and damaged, and whether the internal material has obvious changes.
6.1.5.2.2 Oil resistance
Immerse the prepared and cured samples in transformer oil, maintain the oil temperature at 20℃±5℃, observe once every 24 hours, and take out after 72 hours.
6.1.5.2.3 Resistance to moisture and heat
Place the prepared and cured specimens in a test chamber with a relative humidity of (90±5)% and a temperature of 45℃±5℃ for the specified time.
After that, take out the specimen and place it in an environment that is not exposed to direct sunlight to dry naturally. Observe whether the specimen is cracked or powdered.
6.1.5.2.4 Freeze-thaw cycle resistance
Place the prepared specimens in water at 23℃±2℃ for 18h, and then place them in a low temperature box at -20℃±2℃.
When the temperature in the box reaches -18℃, freeze for 3 hours, then take the specimen out of the low temperature box and immediately put it into a constant temperature box at 50℃±2℃.
Keep the temperature constant for 3 hours. Take out the specimen and repeat the above operation for 15 cycles. Observe whether the specimen is cracked or powdered.
6.1.5.2.5 Acid resistance
Place the prepared and cured specimens in a 3% hydrochloric acid solution at a temperature of 20°C ± 5°C and observe them every 24 hours.
Check whether the sample swells or cracks.
6.1.5.2.6 Alkali resistance
Immerse the prepared and cured specimens in a 3% ammonia solution at a temperature of 20°C ± 5°C and observe them every 24 hours.
Whether it swells or cracks.
6.1.5.3 Judgment conditions
6.1.5.3.1 Water resistance, oil resistance, acid resistance, alkali resistance
After the fire retardant bag is soaked for the specified time, take it out and wipe it dry. The bag body should be intact and without damage, and the internal materials should not have obvious changes.
After the other specimens are immersed for the specified time, at least two of the three specimens should not show swelling or cracking.
6.1.5.3.2 Resistance to moisture and heat, and resistance to freeze-thaw cycles
After the test is carried out according to the regulations, the material inside the fire barrier package should not change significantly, and at least two of the three specimens of the other samples should not show cracks,
Powdering phenomenon.
......
GB 23864-2009
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 13.220.50
C 84
Firestop material
防火封堵材料
[Including 2012XG1]
ISSUED ON: JUNE 01, 2009
IMPLEMENTED ON: FEBRUARY 01, 2010
Issued by: General Administration of Quality Supervision, Inspection and
Quarantine of PRC;
Standardization Administration of PRC.
Table of Contents
Foreword ... 3
1 Scope ... 4
2 Normative references ... 4
3 Terms and definitions ... 5
4 Classification and markings ... 5
5 Requirements ... 7
6 Test method ... 10
7 Inspection rules ... 25
8 Comprehensive judgment criteria ... 25
9 Packaging, marking, storage, transportation ... 26
Appendix A (Normative) Installation of standard test piece for fire resistance test
of firestop material ... 27
Appendix B (Informative) Application of fire resistance test results ... 35
Amendment Sheet No.1 [2012XG1] ... 36
Firestop material
1 Scope
This standard specifies the terms and definitions, classification and marking,
requirements, test methods, inspection rules, comprehensive judgment criteria,
packaging, marking, storage, transportation of firestop material.
This standard is applicable to firestop material or firestop subassembly, which
are used in various through holes and structural gaps in buildings, structures,
various facilities. It is not applicable to the fire-proof expansion seals which are
used inside the building accessories AND the rigid polyvinyl chloride firestop
ring for the drainage pipeline for building purpose.
2 Normative references
The provisions in following documents become the provisions of this Standard
through reference in this Standard. For the dated references, the subsequent
amendments (excluding corrections) or revisions do not apply to this Standard;
however, parties who reach an agreement based on this Standard are
encouraged to study if the latest versions of these documents are applicable.
For undated references, the latest edition of the referenced document applies.
GB/T 2408-2008 Plastics - Determination of burning characteristics -
Horizontal and vertical test
GB/T 2611 General requirements for testing machines
GB/T 5455 Textiles - Burning behavior - Vertical method
GB/T 7019-1997 Test methods for fiber cement products
GB/T 8333 Test method for flammability of rigid cellular plastic - Vertical
burning method
GB/T 9978.1 Fire-resistance tests - Elements of building construction - Part
1: General requirements
GA 304-2001 Fire stopping collar of PVC-U pipe for building drainage
- Firestop materials for plastic pipes, refer to the firestop materials and
products, which are used to maintain the overall fire resistance of the
structure, when plastic pipes pass through holes in walls and floor slabs.
4.1.2 Firestop materials can be divided into the following types, according to
the composition and shape characteristics of the product:
- Flexible organic plugging material: It uses organic materials as adhesives;
it has a certain degree of flexibility or plasticity when used; the product is a
clay-like material;
- Inorganic plugging material: It is a powdery solid, which uses inorganic
materials as the main component; it has proper workability when blended
with admixtures;
- Flame-retardant bag: A bag-like object, which is made of fire-resistant
packaging materials, AND suitable for firestop of larger holes or fire-proof
separation of cable bridges (flame-retardant bags are also called fire-
endurance bags or fire-proof bags);
- Fire-retardant module: A solid with a certain shape and size, which is made
of fireproof materials, can be easily cut and drilled, AND is suitable for
firestop of holes or cable trays;
- Firestop plate: A plate, made of fire-proof materials, which can be easily cut
and drilled, AND is suitable for firestop of large holes;
- Foam plugging material: Fireproof material, that can expand and foam and
seal the hole after being injected into the hole;
- Gap plugging material: A solid fireproof material, which is placed in the gap
and used to block fixed or movable joints;
- Fire-resistant sealant: Liquid fireproof material, which has fireproof sealing
function;
- Fire-resistant tape: A flexible, winding, crimping ribbon-like product, which
is made of fireproof materials, wound on the outer surface of a plastic pipe,
wrapped by steel tape or fixed by other appropriate methods. It expands
and squeezes the softened pipe after a fire, thereby sealing the holes left
by the plastic pipes due to burning or softening.
4.2 Markings
The corresponding relationship between the names and codes of various
firestop materials is as follows:
6.7.2 Corrosion test of other plugging materials
Take two Q235 ordinary carbon structural steel plates, which have a size of 150
mm × 100 mm × 0.8 mm AND three cables, which have a length of 25 mm and
an outer diameter of ϕ30 mm ~ ϕ40 mm. Apply the blended inorganic plugging
materials, flexible organic plugging materials, foam plugging materials, or fire-
resistant sealant, on the surface of the steel plate and the outer rubber of the
cable. After seven days, observe whether there is rust or corrosion, at the
contact portion BETWEEN the steel plate and the outer rubber of the cable AND
the plugging material specimen.
6.8 Water resistance
6.8.1 Preparation of specimens
Inorganic plugging material, fire-resistant sealant: Inject the blended specimen
into a standard test mold, which has a size of 200 mm × 20 mm × 20 mm. Tamp
it compact AND smoothen it. After it is basically cured, remove the mold. After
the curing period expires, saw the specimen into three cube test blocks, each
of which has a size of 20 mm × 20 mm × 20 mm. The blending and curing of
the specimens are carried out in accordance with the product instructions.
Flexible organic plugging material: Take a certain amount of specimen. Knead
it uniformly, to make three spheres, each of which has a diameter of 20 mm.
Flame-retardant bag: The specimens are three complete bags.
Other firestop materials: Cut the specimen into three test blocks, each of which
has a size of 20 mm × 20 mm × 20 mm, with a coated firestop material on the
surface. The exposed section shall be coated with the same surface material.
For materials which have a thickness of less than 20 mm, the thickness of the
test block is the same as that of the material.
Note: For fire-resistant sealants that cannot be cured, they can be coated on three 50
mm × 50 mm × 2 mm stainless steel plates or polyethylene plastic plates for testing.
The coating thickness is 1 mm ± 0.5 mm.
6.8.2 Test procedure
Immerse the prepared and cured specimen in tap water. Keep the temperature
at 20 °C ± 5 °C. Observe once a day. Take it out after three days. Observe
whether the specimen swells or cracks; whether the flame-retardant bag is
complete, whether there is damage, AND whether there is any obvious change
in the inner material.
6.8.3 Judgment conditions
Put the prepared and cured test piece in water at 23 °C ± 2 °C for 18 h. Then
put the specimens in a low temperature box at -20 °C ± 2 °C. When the
temperature in the box reaches -18 °C, freeze it for 3 h. Then take the test piece
out of the low temperature box. Immediately put it into a 50 °C ± 2 °C incubator.
Keep it at constant temperature for 3 hours. Take out the test piece, to repeat
the above operation, for a total of 15 cycles. Observe whether the specimen is
cracked or powdered.
6.11.3 Judgment conditions
Determine according to the requirements of 6.10.3.
6.12 Acid resistance
6.12.1 Preparation of specimens
Prepare specimens according to the requirements of 6.8.1.
6.12.2 Test procedure
Place the prepared and cured specimen, in a 3% hydrochloric acid solution,
Keep the temperature at 20 °C ± 5 °C. Observe once a day, to check whether
the specimen swells or cracks.
6.12.3 Judgment conditions
After immersing for three days, at least two of the three specimens shall not
swell or crack.
6.13 Alkali resistance
6.13.1 Preparation of specimens
Prepare specimens according to the requirements of 6.8.1.
6.13.2 Test procedure
Immerse the prepared and cured specimen in a 3% ammonia solution. Keep
the temperature at 20 °C ± 5 °C. Observe once a day, to check whether the
specimen swells or cracks.
6.13.3 Judgment conditions
After immersing for three days, at least two of the three specimens shall not
swell or crack.
6.14 Swelling performance
6.14.1 Preparation of specimens
specified in GB/T 2408-2008.
Note: For the test pieces that cannot be self-supported, they are allowed to be placed
on a metal net for testing.
6.15.3 The foam plugging material shall be tested in accordance with the
provisions of GB/T 8333.
6.15.4 For the flame-retardant module, firestop plate, gap plugging material,
flame-retardant tape, the combustion performance shall be tested in
accordance with the vertical method as specified in GB/T 2408-2008.
6.16 Fire resistance
6.16.1 Test device
6.16.1.1 Refractory test furnace
It meets the requirements of GB/T 9978.1 for refractory test furnace.
The refractory test furnace shall meet the requirements of specimen installation,
heating conditions, pressure conditions, temperature testing, observation
during testing.
6.16.1.2 Temperature measuring equipment
The temperature measuring equipment for the fire resistance test shall meet
the following requirements:
a) Temperature test in the furnace
For temperature measurement in the furnace, use a thermocouple, which
has a wire diameter of ϕ0.75 mm ~ ϕ2.30 mm. The hot end of the
thermocouple shall extend out of the sleeve for 25 mm; the temperature
sensing end of the thermocouple shall be 100 mm away from the fire plane
of the plugging material. The number of thermocouples in the furnace shall
not be less than 5.
b) Temperature measurement of the fire-back surface of the test piece
The fire-back surface of the test piece - For the temperature measurement
of the plugging material, the surface of the cable or the surface of the pipe,
the surface of the frame which is 25 mm from the edge of the plugging
material, the surface of the plastic pipe, use a thermocouple, which has a
wire diameter of Φ0.5 mm, industrial grade II; the quantity shall not be less
than 6 pieces. The distribution is as follows: On the surface of the plugging
material, which is 25 mm from the surface of the penetration: not less than
2 pieces; on the surface of the penetration (cable, cable bundle or pipe),
production of test pieces may select the preparation method of standard test
piece, which is specified in this standard. For the test piece used in actual
engineering, the production of the test piece shall be consistent with the actual
use. When the test piece, which is produced according to the actual engineering
application, already contains all the penetrations and their combinations in the
standard test piece, if its fire resistance meets the specified requirements, the
test results may also be used to judge the quality of the product.
6.16.4.1.2 For the tested plugging head (head length 50 mm, thickness 25 mm),
which is used for the fire end of the cable, the length of the cable, which is
exposed to the fire, is 300 mm. For the inner dimeter of the tested plugged pipe,
which is used for the fire end of the pipe, the plugging length is 100 mm, the
pipe extends out of the fire surface of the test piece for 300 mm; the length of
the penetration is 1500 mm.
6.16.4.1.3 The penetration or support on the fire-back surface shall be fixed in
an appropriate manner, to prevent the penetration or support from slipping off
before or during the test.
6.16.4.2 Firestop material test piece for holes
6.16.4.2.1 The standard test piece of firestop material for holes, shall include
firestop materials for concrete frames, penetrations, brackets, holes. For the
size and detailed production requirements of standard test pieces, see A.1 in
Appendix A.
6.16.4.2.2 For inorganic plugging materials, flame-retardant bag or flame-
retardant module, the firestop materials in Figure A.1 shall be one of the tested
inorganic plugging materials, flame-retardant bag or flame-retardant module. It
is allowed to be used in conjunction with flexible organic plugging materials or
foam plugging materials.
6.16.4.2.3 For flexible organic plugging materials or foam plugging materials,
the plugging material in Figure A.1 is substituted by the C30 concrete, on which
a rectangular hole (hole length: 510 mm, height: 110 mm) is reserved. The
rectangular hole is reserved at the position where the cable tray, cable, steel
pipe and other penetrations need to be laid, as shown in Figure A.1. Lay
penetrations such as cable trays, cables, steel pipes in the reserved rectangular
holes, according to Figure A.2. Use flexible organic plugging materials or foam
plugging materials to block all gaps in the holes.
Note: The specimen production of flexible organic plugging material or foam plugging
material is as shown in Figure A.2.
6.16.4.2.4 For firestop plates, the firestop material in Figure A.1 shall use one
firestop plate, on each of the fire-receiving surface and the fire-back surface. It
The installation of the test piece shall reflect the actual use situation. According
to the test requirements, the test piece is installed on the combustion test
furnace vertically or horizontally for testing. Arrange thermocouples on the
firestop material, penetrations, frame of the fire-back surface, to measure the
temperature rise of the fire-back surface. The cantilever end of the penetration
shall use effective support (bracket).
6.16.6.2 Measurement and observation
The thermocouples used for temperature measurement in the furnace shall
meet the requirements of GB/T 9978.1. The setting of thermocouples shall be
no less than 5. The temperature recording period shall be no more than 30 s.
a) The temperature of back-fire side of specimen
Measure and observe the temperature of the surface of the firestop
material on the back-fire surface, the temperature of the cable surface at
a distance of 25 mm from the back-fire surface of the firestop material, the
temperature of the surface of pipe at a distance of 25 mm from the back-
fire surface of the firestop material, the temperature on the frame surface
at 25 mm from the back-fire surface of the firestop material.
b) Integrity
Measure and observe whether there is flame or hot air, that passes
through and ignites cotton pad, on the back-fire surface of the test piece;
whether there is continuous flame on the back-fire surface of the test piece
for more than 10 s. The requirements and use of cotton pads shall meet
the requirements of GB/T 9978.1.
c) Thermal insulation
Measure and record the temperature rise of all temperature measurement
points, on the back-fire surface, including the temperature rise of the
moving thermocouple, as well as the time it takes for the temperature rise
at any temperature measurement point to reach 180 °C.
6.16.7 Judgment criteria for fire resistance limit
6.16.7.1 Judgment of fire resistance polarity
When any of the loss of integrity or loss of thermal insulation, which are
specified in 6.16.7.2 and 6.16.7.3, occurs in the test, it means that the integrity
or thermal insulation of the firestop material has reached the limit state; the
recorded time is the fire resistance time limit when the integrity OR the thermal
insulation of the firestop material is lost.
A - The area under the actual furnace temperature curve of the first 3/4 I;
As - The area under the standard furnace temperature curve in the same
time period as A.
6.16.10 Application of fire resistance test results
Refer to Appendix B for the application of fire resistance test results.
7 Inspection rules
7.1 The technical indicators, such as fire resistance, combustion performance,
all physical and chemical properties, as specified in this standard, are type
inspection items.
7.2 In one of the following situations, the product shall undergo type inspection:
a) Trial production appraisal of a new product after being put into production
or a trans-plant produced product;
b) After formal production, when there are major changes in the raw materials,
formulas, production processes of the product, or when the normal
production has reached three years;
c) When the production is restored after suspension form more than 1 year;
d) Where there is a big difference between the exit-factory inspection results
and the last type inspection;
e) When requested by the national quality supervision agency.
7.3 The appearance, apparent density, initial setting time, drop resistance,
swelling performance, water resistance, oil resistance, alkali resistance,
combustion performance, which are specified in this standard, are the exit-
factory inspection items.
8 Comprehensive judgment criteria
8.1 The samples required for firestop material shall be randomly selected from
the batch product or the site of use.
8.2 When the fire resistance of the firestop material reaches a certain level (1
h, 2 h, 3 h), AND all other performance indicators meet the standard
requirements, the product is recognized as qualified for a certain level of
product quality.
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