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GB 28376-2012: Fireproof board for tunnels
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Basic data
Standard ID: GB 28376-2012 (GB28376-2012)
Description (Translated English): Fireproof board for tunnels
Sector / Industry: National Standard
Classification of Chinese Standard: C84
Classification of International Standard: 13.220.50
Word Count Estimation: 17,134
Quoted Standard: GB/T 191; GB/T 7019-1997; GB/T 8626; GB/T 9265; GB/T 9978.1; GB 14907; GB/T 20284; GB/T 20285; GB 50010; GA/T 714-2007; JC/T 646-2006
Regulation (derived from): National Standards Bulletin No. 9 of 2012
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary: This Chinese standard specifies the tunnel fire protection board terms and definitions, product classification, requirements, test methods, inspection rules, packaging, labeling, transportation and storage. This standard applies to highways, urban transpo
GB 28376-2012: Fireproof board for tunnels
---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Fireproof board for tunnels
ICS 13.220.50
C84
National Standards of People's Republic of China
Tunnel fire protection board
Published 2012-05-11
2012-09-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China issued
Foreword
This standard Chapter 5, Chapter 7 are mandatory, the rest are recommended.
This standard was drafted in accordance with rules GB/T 1.1-2009 given.
The standard proposed by the People's Republic of China Ministry of Public Security.
This Standard Technical Committee (SAC/TC113/SC7) administered by the National Fire Protection fire prevention materials Standardization Technical Committee points.
This standard is drafted. Sichuan Fire Research Institute Ministry of Public Security, Ministry of Communications Highway Research Institute.
It participated in the drafting of this standard. Sichuan Tianfu Fire Materials Co., Ltd., Shanghai Xinlong fire Material Co., Ltd., Chongqing's Spirit Paint has
Limited long Sha Weite fire New Material Technology Co., Ltd. Jiang Xi Boao fire prevention materials, Zhejiang Dongyang Babai home fireproof materials
Limited.
The main drafters. Yuan Yali, Cheng Daobin, Nie Tao, Mao Zhaojun, Pu Aiping, Wang Pengxiang, Wei Yu, Zhang Cai, Yao Jianjun, Liu Heng rights,
Zeng Xu Bin.
Tunnel fire protection board
1 Scope
This standard specifies the terms and definitions of the tunnel fire protection board, product classification, requirements, test methods, inspection rules and packaging, labeling, transportation
Transport and storage.
This standard applies to highway, urban traffic tunnel fire protection board tunnel concrete structure of the surface used, can refer railway tunnel
carried out.
2 Normative references
The following documents for the application of this document is essential. For dated references, only applies to the version dated paper
Pieces. For undated references, the latest edition (including any amendments) applies to this document.
GB/T 191 Packaging Pictorial signs
GB/T 7019-1997 Test Method fiber cement article
GB/T 8626 supplies Flammability Test Method
Determination GB/T 9265 alkali resistance of architectural coatings and
GB/T 9978.1 building components resistance test methods - Part 1. General Requirements
GB 14907 steel structure fire
GB/T 20284 building materials and products of combustion test monomers
GB/T 20285 smoke toxicity risk stratification material
GB 50010 Design of Concrete Structures
GA/T 714-2007 member rapid heating test method for fire protection refractory material
JC/T 646-2006 magnesium duct
3 Terms and Definitions
The following terms and definitions apply to this document.
3.1
Fixedly mounted on the surface of the concrete structure and urban road traffic tunnel can improve the fire resistance of the structure of the tunnel fire protection board.
3.2
Tunnel fire protection plate made of a single homogeneous material.
3.3
A composite of two or more materials (including decorative panel) formed by tunnel fire protection plate.
4 Products
4.1 Classification
4.1.1 structured into.
a) a single tunnel fire protection panels, indicated by symbol D;
b) the composite tunnel fire protection panels, indicated by the symbol F.
4.1.2 fire test according to the heating curve is divided into.
a) BZ categories. according to GB/T 9978.1 standard heating curve prescribed heating plate and fire protection tunnel measurement;
b) HC Class. HC Press GA/T 714-2007 predetermined heating curve heating plate and fire protection tunnel measurement;
C) RABT categories. Press GA/T 714-2007 RABT predetermined heating curve heating plate and fire protection tunnel measurements.
4.2 Model
Model methodology of tunnel fire protection board.
Test sheet structure category
Classified according to fire resistance performance test methods
Fire resistance, in hours (h)
Sheet thickness, in millimeters (mm)
Example 1.
D-BZ-2.00-30, represents plate thickness of 30mm, the standard heating curve, fire resistance of a single tunnel fire protection board of 2.00h.
Example 2.
F-HC-2.00-30, represents the total thickness of 30mm, HC curve by heating, fire resistance of a composite of the tunnel fire protection board 2.00h.
Example 3.
D-RABT-1.50-30, represents plate thickness of 30mm, according RABT heating curve, fire resistance is raised 1.50h, 1.83h the cooling tunnel on a single
Fire protection board.
5 Requirements
5.1 appearance quality
Tunnel fire protection board (hereinafter referred to as sheet material) should have at least one surface is flat, the sheet should be crack, delamination, lack of edges, chipping,
Bubbling, holes, depressions and other defects. Tunnel fire protection plate composite decorative panel if a metal material, for corrosion protection of metal panels
deal with.
5.2 Dimensions and dimensional deviation
5.2.1 Dimensions
Long plate should not exceed 3000mm, width of not more than 1250mm, a thickness of not more than 70mm.
5.2.2 size bias
Length and width dimensions of the sheet deviation ± 3mm. Sheet thickness dimension tolerances should meet the requirements of Table 1. Sheet length
Less than 2000mm, the difference should be less than the diagonal of 5mm; when the sheet length is greater than 2000mm, the difference should be less than the diagonal of
7mm.
Table 1 Thickness tolerance in mm
Sheet nominal thickness d 5≤d < 10 10≤d < 20 20≤d < 30 d≥30
Thickness tolerance ± 1.0 ± 1.3 ± 1.5 ± 2.0
5.3 areal density
The areal density of the plate should not exceed 25kg/m2.
5.4 Edge straightness
Sheet edge flatness should be less than 0.3%, the maximum distance reference line and the plate should be less than 5mm.
5.5 dry flexural strength
Dry flexural strength of the sheet should be not less than 6MPa.
Absorbent saturation bending strength 5.6
Absorbent saturation bending strength should not be less than 70% of the dry bending strength.
5.7 moisture deformation rate
Moisture deformation of the sheet should not exceed 0.20%.
5.8 reversion resistance of halogen
After the test according to the requirements of 6.7, the plate should be no drops, no damp.
5.9 toxicity of smoke
Toxicity of smoke plate should not be less GB/T 20285 in ZA1 stage.
5.10 Water resistance
According to the required test 30d 6.9, the plate should be no cracking, layer, falling off, allowing a slight swell and discoloration.
5.11 Acid
15d after the required test, no cracking plates being 6.10, from the floor, off, allowing a slight swell and discoloration.
5.12 Alkali resistance
15d after the required test, the plate should be 6.11 without cracking, from the floor, off, allowing a slight swell and discoloration.
5.13 moist heat resistance
30d after the required test, the plate should be 6.12 without cracking, from the floor, off, allowing a slight swell and discoloration.
5.14 freeze - thaw resistance
After the test required 15 times 6.13, the sheet should be no cracking, layer, falling off, allowing a slight swell and discoloration.
5.15 Salt spray corrosion resistance
After the test required 30 times 6.14, the sheet should be no cracking, layer, falling off, allowing a slight swell and discoloration; metallic trim panel
Material should be no corrosion of metal surfaces.
5.16 combustion performance
Combustion properties of the sheet material shall meet the requirements in Table 2.
Table 2 Performance combustion plate
No. Item Specifications Test Method
Combustion growth rate index (FIGRA0.4MJ)
W/s
GB/T 20284 ≤250
The 600s total heat release (THR600s)
MJ
GB/T 20284 ≤15
The lateral spread of flame length (the LFS)
GB/T 20284 does not reach the edge of the specimen
Flame tip height (Fs of)
mm
GB/T 8626 ≤150
Water absorption 5.17
The water absorption of the sheet should not exceed 12.0%.
5.18 Fire resistance
Fire resistance sheet should satisfy specified in Table 3.
Table 3 sheets of fire resistance in hours
Heating curve fire resistance category
BZ class ≥2.00
HC class ≥2.00
RABT type heating ≥1.50, cooling ≥1.83
6 Test methods
6.1 appearance quality
Exterior sheet quality inspection by visual manner.
Size and size deviation 6.2
6.2.1 Measuring Tool
Measuring accuracy of measurement used include steel tape and accuracy of 1mm vernier caliper of 0.02mm.
6.2.2 length, width, and diagonal measurements
Each steel plate side of the midpoint of the tape and measuring 25mm from both ends, the length and width of each measuring twice the nearest 1mm. measuring
When, should avoid local defects visible, arithmetic means 6, i.e. the measurement result as the length or width of the sheet.
Steel tape measure the diagonal length of the sheet to the nearest 1mm.
6.2.3 thickness measurement
According to the position shown in Figure 1, the four sides of the sheet material 8 uniformly selected measuring points, its thickness measured with calipers, respectively, to the nearest
0.1mm. 8 is the average of the measured results of the plate thickness.
Position of FIG. 1 Thickness Measurement
6.2.4 areal density
Take 600mm × 600mm test piece 3 (comprising a decorative panel and a fire-retardant insulation layer, such as a decorative panel is a multilayer panel superposed to the actual
Layers used in tunnel construction date), respectively called the test piece quality, accurate to 1g, and the respective test pieces were measured in length and width to the nearest
1mm. According to formula (1) surface density is calculated.
d = mlb
(1)
Where.
D --- areal density in kilograms per square meter (kg/m2);
--- m sample mass, in kilograms (kg);
--- sample length L, in meters (m);
Sample B --- width in meters (m).
3 averaged areal density of the sample as a sample.
6.2.5 edge flatness measurement
The four sides of the plate are sequentially against a length greater than the reference line side of the plate, with the plate edge and caliper measurements of most reference line
A large distance to the nearest 0.1mm.
(2) calculating edge flatness by the formula.
P = hL × 1000
(2)
Where.
P --- edge flatness, (‰);
H --- maximum distance reference line and the plate edge, in millimeters (mm);
L --- measuring plate edge, in millimeters (mm).
Maximum calculated value takes four sides of the sample as the edge flatness.
6.3 Physical and Chemical Properties
6.3.1 Preparation of test piece
Physicochemical properties of the specimen shall be taken at a position away from the plate edge is not less than 200mm. Wherein the dry anti-flexural strength and water absorption saturation
Bending strength of the test piece taken the position of FIG. 2 shall comply with the requirements.
a) Specimen thickness ≤20.0mm b) specimen thickness > 20.0mm
FIG 2 bending strength test piece taken the position
6.3.2 size and number
Test specimen size and number of physical and chemical properties are shown in Table 4.
Table 4 Number of specimen size and
No. Item Size/Number mm/block
1 the water resistance of 150 × 150 3
Acid 2 150 × 150 3
Alkali resistance 3 150 × 150 3
Moist heat resistance 4 150 × 150 3
5 freeze-thaw cycles of 150 × 150 4
Salt spray corrosion resistance 6 150 × 150 3
7 halogen reversion resistance of 150 × 150 3
Water absorption of 100 × 100 3 8
6.4 dry flexural strength
When the thickness of the specimen e≤20mm, according to FIG. 2a) from the position shown in solid lines each sheet of the two specimens taken; e > 20mm, the press of FIG. 2b)
The position shown in solid lines taken from each plate contained four specimens, specimen size shown in Table 5. The test piece placed in 100 ℃ ~ 105 ℃ drying oven to
Constant quality, the conditions for determining an interval rate of mass change before and after 2h the two weighing no more than 1%. The test pieces dried in a desiccator,
After cooling to room temperature, according to GB/T 7019-1997 test specified in 9.3.4 and 9.4.2 and calculating flexural strength test pieces. 2 specimens
The average of four test results, four specimens are averaged eight test results as the dry bending strength of the specimen.
Table 5 flexural strength test piece dimensions are in millimeters
Thickness e
Specimen size
Length and width
The distance between the fulcrum
≤20 250 250 215
> 20 10e 40 3e (minimum of not less than 100) 10e
Absorbent saturation bending strength 6.5
Specimen thickness e≤20mm, according to FIG. 2a) from the position shown in broken lines each sheet of the two specimens taken; e > When 20mm, according to FIG. 2b) Virtual
Each plate from the position shown by a line taken four specimens, specimen size shown in Table 5. 24h is placed in the test piece in water at a temperature of 5 ℃ ~ 35 ℃
After taken out of water droplets wipe the surface with a wet towel, immediately press the 9.3.4 7019-1997 GB/T and a predetermined test and calculating 9.4.2
Flexural strength test piece. Average of two specimens taken four test results, the test piece 4 8 taken as the average of the results of tests saturated with water
Flexural strength state.
6.6 moisture deformation rate
300mm × 300mm test piece taken of two, four reference points to determine the specimen surface as shown in Figure 3, the reference points sequentially spaced
250mm. The test piece was immersed in 5 ℃ ~ 35 ℃ water over 24h, remove the specimen, accurately measured with a vernier caliper 1-2,2-3,3-4,
The distance between the 4-1. The test piece was then placed in a (60 ± 3) ℃ oven dried within 24h ~ 28h after taken out, cooled to room temperature and measure
1-2,2-3,3-4,4-1 distance between the nearest 0.02mm.
(3) the deformation rate calculated by the absorbent formula.
S = L1-L2L2 ×
100% (3)
Where.
S --- moisture deformation ratio (%);
After the reference point Ll --- absorbent distance, in millimeters (mm);
--- the distance L2 of the reference point after drying, in millimeters (mm).
Take four segment distance measurement data as the arithmetic mean of the moisture deformation of the specimen.
3 FIG moisture deformation of the specimen
6.7 reversion resistance of halogen
In a set of three samples of each cutting arbitrarily a plate of 150mm × 150mm sample, placed in a relative humidity of 90% to 95%,
Temperature (40 ± 2) ℃ Humidity Chamber of (24 ± 2) h after taken out to observe whether the phenomenon of water droplets or damp.
6.8 toxicity of smoke
Tested and graded according to GB/T 20285 requirements. If the tunnel fire protection version of the composite panel decorative metal material,
Fire-retardant insulation layer, whichever is tested and graded.
6.9 Water resistance
6.3 specimens prepared in accordance with the requirements of the test piece was immersed in tap water to 2/3 of a predetermined time, at least 3 specimens two qualified.
6.10 Acid
6.3 specimens made according to the requirements of the test piece was immersed in 2/3 of a 3% hydrochloric acid solution to a predetermined time of at least 3 specimens 2
qualified.
6.11 Alkali resistance
6.3 specimens prepared in accordance with the requirements of the 2/3 specimen was immersed in an alkali solution to a predetermined time formulated, an alkali solution (saturated calcium hydroxide) of
Carried out in GB/T 9265. 3 specimens in at least two qualified.
6.12 moist heat resistance
6.3 specimens made according to the requirements and tested in accordance with test methods specified in GB 14907, 3 specimens in at least two qualified.
6.13 freeze - thaw resistance
After the four test pieces prepared in accordance with the requirements of 6.3, whichever one as a control, the other three specimens are placed 24h at room temperature, was placed
Water 18h (23 ± 2) ℃, and then into the specimen (-20 ± 2) ℃ cryostat in 3h, and then the test pieces were taken from the cold box, immediately
Add (50 ± 2) ℃ incubator 3h, remove the specimen. A predetermined number of times to repeat the operation, and then remove the specimen is placed IH, on the same
Still compared, the test piece was observed presence of cracks, from the floor, off, color and so on. 3 specimens in at least two qualified.
6.14 Salt spray corrosion resistance
6.14.1 Test Equipment
Salt spray test equipment box or salt spray chamber.
Material in the salt spray chamber (chamber) should not affect the salt spray corrosion; Salt should not be sprayed directly on the test piece; aggregated top box (chamber)
Saline solution should be dropped on the test piece; saline solution flowing down from the walls should not be reused.
The salt spray chamber (chamber) should be air-conditioning equipment, the salt spray chamber (chamber) in the temperature-controlled air (35 ± 2) range ℃, and relative humidity maintained
More than 95%.
A chemically pure sodium chloride brine solution and distilled water, which is the concentration of (5 ± 0.1)%, pH value should be controlled at 6.5 to 7.2
between.
Reducing the amount of fog in the salt spray chamber (chamber) should be controlled at 1mL/(h · 80cm2) ~ 2mL/(h · 80cm2) between.
6.14.2 accuracy of the measuring device
The accuracy of the measuring device should be in the following range.
--- Temperature. ± 0.5 ℃;
--- Humidity. ± 2%;
--- acidity. ± 0.1pH.
6.14.3 Test Procedure
6.14.3.1 before start of the test, the test surface should be wiped clean. The test piece placed in the salt spray chamber (chamber).
6.14.3.2 In 24h period 1, the first continuous spray 8h, and then stopped for 16 h, a total of five test cycles.
When 6.14.3.3 spray, salt spray holding tank (room) temperature (35 ± 2) ℃, relative humidity greater than 95%; stop spraying unheated Close
Salt spray chamber (chamber), natural cooling.
6.14.3.4 After the test, remove the specimen after drying, the specimen was observed at room temperature, presence of cracks, from the floor, off, color, three specimens to
Less two qualified.
6.15 combustion performance
Combustion growth rate index sheet (FIGRA0.4MJ), within 600s total heat release (THR600s), the lateral spread of flame length (the LFS)
Test according to GB/T 20284's. Flame tip height (Fs of) test according to GB/T 8626's.
Note. When the test according to GB/T 8626, the surface of the sample ignition 30s, recording the maximum height of the flame tip (Fs of) the 60s.
Water absorption 6.16
Tested by JC/T 646-2006 Appendix B, where electric oven temperature should be controlled in the range of 45 ℃ ~ 50 ℃.
6.17 Fire resistance
6.17.1 Test apparatus
The accuracy of the test furnace and a refractory furnace pressure measuring and control equipment type BZ specimen, a combustion system, the constraint boundary conditions, the equipment should meet
Bonding requirements GB/T 9978.1 is.
Fire test furnace and furnace pressure measuring and control equipment RABT classes and HC-based specimen, combustion systems, specimen deformation measuring instrument, the constraint
The accuracy of boundary conditions, the equipment should meet the GA/T 714-2007 requirements of.
6.17.2 Fire resistance test piece and installation
6.17.2.1 base fire performance requirements specimen
Shall comply with the test substrate is a predetermined intensity level 50010 GB C30 concrete slab having a thickness of 150mm, a size of
1450mm × 1450mm, the bottom surface of the protective layer thickness is reinforced 25mm. Position of the structural concrete slab and a thermocouple and thermocouple
Fixed respectively Figures 4 and 5.
In millimeters
Note. Tc1, Tc2, Tc3, Tc4 represents the distribution in the concrete slab 4 C30 th......
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