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JC/T 908-2013 (JCT908-2013)

JC/T 908-2013_English: PDF (JCT 908-2013, JCT908-2013)
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BASIC DATA
Standard ID JC/T 908-2013 (JC/T908-2013)
Description (Translated English) Artificial stone
Sector / Industry Building Materials Industry Standard (Recommended)
Classification of Chinese Standard Q21
Classification of International Standard 91.100.20
Word Count Estimation 36,323
Older Standard (superseded by this standard) JC 908-2002
Quoted Standard GB 178; GB/T 2828.1; GB/T 2406.2; GB/T 2479; GB/T 2567; GB/T 3810.3; GB/T 3810.4; GB/T 3854; GB 6566; GB/T 9966.1; GB/T 13891; GB/T 16422.2; GB/T 17657-1999; ISO 8486-1; GB/T 11942
Drafting Organization Building materials industry and Technical Supervision Research Center
Administrative Organization China Building Materials Federation
Regulation (derived from) Ministry of Industry and Information Bulletin 2013 No. 23; industry standard for filing Notice 2013 No. 7 (No. 163 overall)
Summary This standard specifies: artificial stone (including artificial stone solid surfaces, artificial quartz stone and artificial stone Shek Kong) terms and definitions, product classification, size, grade and marking, materials, requirements, test methods, in

Standards related to: JC/T 908-2013

JC/T 908-2013
JC
INDUSTRY STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 91.100.20
Q 21
Record No.: 40954-2013
Replacing JC 908-2002
Artificial stone
人造石
ISSUE ON: APRIL 25, 2013
IMPLEMENTED ON: SEPTEMBER 1, 2013
Issued by: Ministry of Industry and Information Technology of the
People's Republic of China
Table of Contents
Foreword ... 3 
1 Scope ... 5 
2 Normative references ... 5 
3 Terms and definitions ... 6 
4 Product classification, specification, dimension, grade and mark ... 7 
5 Materials ... 10 
6 Requirements ... 11 
7 Test methods ... 21 
8 Inspection rules ... 27 
9 Marking, packaging, transport and storage ... 29 
Annex A (Normative) Method for testing Mohs hardness ... 31 
Annex B (Normative) Method for testing deformation under load ... 33 
Annex C (Normative) Method for testing abrasion resistance ... 35 
Annex D (Normative) Method for testing coefficient of linear thermal expansion
... 43 
Annex E (Normative) Method for testing contamination resistance ... 45 
Annex F (Normative) Method for testing chemical resistance ... 47 
Annex G (Normative) Method for testing high temperature resistance ... 49 
Artificial stone
1 Scope
This standard specifies the terms and definitions, product classification,
specification and dimension, grade and mark, materials, requirements, test
methods, inspection rules, packaging, marking, transport and storage of
artificial stone (including artificial stone-solid surface materials, artificial stone-
agglomerated quartz, artificial stone-agglomerated marble, etc.).
This standard is applicable to table tops, walls, floors, ceiling materials,
decorative surface materials and marked lines that use artificial stone-solid
surface materials, artificial stone-agglomerated quartz and artificial stone-
agglomerated marble; It may refer to this standard for artificial stones of other
types and for other purposes as well as their products (such as wash basins
and bathtubs).
2 Normative references
The following referenced documents are indispensable for the application of
this document. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any
amendments) applies.
GB 178 Standard sand for cement strength test
GB/T 2828.1 Sampling procedures for inspection by attributes - Part 1:
Sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot
inspection
GB/T 2406.2 Plastics - Determination of burning behaviour by oxygen index -
Part 2: Ambient-temperature test
GB/T 2479 Conventional abrasive - White fused alumina
GB/T 2567 Test methods for properties of resin casting body
GB/T 3810.3 Test method of ceramic tiles - Part 3: Determination of water
absorption, apparent porosity, apparent relative density and bulk density
GB/T 3810.4 Test methods of ceramic tiles - Part 4: Determination of modulus
of rupture and breaking strength
GB/T 3854 Test method for hardness of reinforced plastics by means of a Barcol
impresser
GB 6566 Limits of radionuclides in building materials
GB/T 9966.1 Test methods for natural facing stones - Part 1: Dry, wet and after
freezing test methods for compressive strength
GB/T 11942 Colorimetric methods for colour building materials
GB/T 13891 Test methods of specular gloss for decorative building materials
GB/T 16422.2 Plastics - Methods of exposure to laboratory light sources - Part
2: Xenon-arc sources (GB/T 16422.2-1999; idt ISO 4892-2:1994)
GB/T 17657-1999 Test methods of evaluating the properties of wood-based
panels and surface decorated wood-based panels
ISO 8486-1 Bonded abrasives - Determination and designation of grain size
distribution - Part 1: Macrogrits F4 to F220
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
artificial stone
The material that is made by mixing, coagulating and curing processes, etc.
with high molecular polymer or cement or mixture of both as adhesive material
and natural stone crushed (powder) material and/or natural quartzite (sand,
powder) or aluminum hydroxide powder as main raw materials, and with
pigment and other additives added, which mainly includes artificial stone-solid
surface materials, artificial stone-agglomerated quartz and artificial stone-
agglomerated marble.
3.2
artificial stone-solid surface materials (solid surface materials)
The artificial stone that is formed by casting or vacuum molding or compression
molding, with methyl methacrylate (MMA; commonly known as acrylic) or
unsaturated polyester resin (UPR) as the matrix and aluminum hydroxide
mainly as filling material, and with pigments and other adhesive materials
added, whose scientific name is mineral-filled polymer composite which is
referred to as solid surface material for short.
according to specification and dimension allowable deviation, angle tolerance,
flatness and appearance quality.
4.4 Mark
4.4.1 Solid surface materials
The solid surface materials shall be marked in the order of product Chinese
name, English abbreviation of matrix resin, specification and dimension code,
nominal thickness, grade and this standard number.
Example: Type I Grade A solid surface material meeting the requirements of
this standard, with polymethyl methacrylate as matrix and a thickness of 12.0
mm shall be marked as:
Artificial stone-solid surface material PMMA/I 12.0 A/JC/T 908- 2013
4.4.2 Agglomerated quartz
The agglomerated quartz shall be marked in the order of product Chinese name,
English abbreviation of matrix resin, specification and dimension, grade code
and this standard number.
Grade B agglomerated quartz meeting the requirements of this standard, with
unsaturated polyester resin as matrix, a thickness of 16mm and a side length
of 3,050 mm×1,450mm shall be marked as:
Artificial stone-agglomerated quartz UPR 3050×1450×16 B/JC/T 908-2013
4.4.3 Agglomerated marble
The agglomerated marble shall be marked in the order of product Chinese
name, English abbreviation of matrix resin, specification and dimension, grade
code and this standard number.
Example: Grade A artificial stone-agglomerated marble meeting the
requirements of this standard, with unsaturated polyester resin as matrix, a
thickness of 16.5mm and a side length of 800 mm×800 mm shall be marked as:
Artificial stone-agglomerated marble UPR 800×800×16.5 A/JC/T 908-2013
5 Materials
5.1 Filling material or pigment
The filling material or pigment used for artificial stone shall be suitable materials
meeting the performance requirements as specified in this standard.
6.7.2 Agglomerated quartz
Where the agglomerated quartz is used for table tops, the sample shall be
tested with a steel ball of 450g and an impact height of no less than 1,200mm
(for Grade A products) or 800mm (for Grade B products); it shall not be
damaged.
Where the agglomerated quartz is used for walls and floors, the sample shall
be tested by dropping a steel ball of 225g freely from a height of 1,200 mm; it
shall not be damaged.
6.7.3 Agglomerated marble
Perform the test by dropping a solid steel ball of 225g freely at a height of 800
mm; after which, the sample shall not be damaged.
6.8 Bending performance
6.8.1 Solid surface materials
For solid surface materials, the bending strength shall not be less than 40 Mpa;
and the bending elastic modulus shall not be less than 6.5 GPa.
6.8.2 Agglomerated quartz
The bending strength of agglomerated quartz shall be greater than 35 MPa.
6.8.3 Agglomerated marble
The bending strength of agglomerated marble shall not be less than 15 MPa.
6.9 Compressive strength
The compressive strength of agglomerated quartz shall not be less than
150mpa; and that of agglomerated marble shall be greater than 80 MPa.
6.10 Abrasion resistance
6.10.1 Solid surface materials
The abrasion resistance of solid surface materials shall not be greater than 0.6g.
6.10.2 Agglomerated quartz
The abrasion resistance of agglomerated quartz shall not be greater than 300
mm3.
6.10.3 Agglomerated marble
The abrasion resistance of agglomerated marble shall not be greater than 500
mm3.
6.11 Coefficient of linear thermal expansion
6.11.1 Solid surface materials
The coefficient of linear thermal expansion of solid surface materials shall not
be greater than 5.0×10-5℃-1.
6.11.2 Agglomerated quartz
The coefficient of linear thermal expansion of agglomerated quartz shall not be
greater than 3.5×10-5℃-1.
6.11.3 Agglomerated marble
The coefficient of linear thermal expansion of agglomerated marble shall not be
greater than 4.0×10-5℃-1.
6.12 Color fastness and aging performance
Compared with the control sample, the specimen of the solid surface materials
shall be free from any fractures, cracks, bubbles or changes in surface texture.
The color difference between specimen and control sample shall not exceed 2
CIE units.
6.13 Glossiness
The mirror glossiness of agglomerated quartz polished plate: high gloss plate >
70; other glossiness requirements shall be agreed between the supplier and
the purchaser; mirror glossiness of agglomerated marble polished plate: high
gloss plate > 70, 40 < gloss plate ≤70, and 20 < low gloss plate ≤40. Other
glossiness requirements shall be agreed between the supplier and the
purchaser
6.14 Classification control of radioactivity protection
The radioactivity of artificial stone shall meet the requirements of Class A in GB
6566.
6.15 Contamination resistance
6.15.1 Solid surface materials
For the specimen of solid surface materials, the total value for contamination
resistance shall not exceed 64; and the maximum stain depth shall not exceed
0.12mm.
fractures, cracks or bubbles. The discoloration, if any, may be removed with
abrasives or polishing agents to an extent that close to the original state of the
plate, without affecting the serviceability of the plate. During the arbitration, the
color difference between the repaired sample and the sample before the test
shall not be greater than 2 CIE units.
6.18.2 Agglomerated quartz
Where the agglomerated quartz is used as the table top material, the surface
of the specimen shall be free from fractures, cracks or bubbles. The
discoloration, if any, may be removed with abrasives or polishing agents to an
extent that close to the original state of the plate, without affecting the
serviceability of the plate. During the arbitration, the color difference between
the repaired sample and the sample before the test shall not be greater than 2
CIE units; the heat resistance of agglomerated quartz which is not used as table
top materials shall be agreed between the supplier and the purchaser.
6.19 High temperature resistance
6.19.1 Solid surface materials
The surface of the specimen for solid surface materials shall be free from
significant influences such as fractures, cracks or bubbles. The surface defects
shall be easy to be polished so that the plate can be restored to their original
state, without affecting the serviceability of the plate. During the arbitration, the
color difference between the repaired sample and the sample before the test
shall not be greater than 2 CIE units.
6.19.2 Agglomerated quartz
Where the agglomerated quartz is used as the table top material, the surface
of the specimen shall be free from significant influences such as fractures,
cracks or bubbles. The surface defects shall be easy to be polished so that the
plate can be restored to their original state, without affecting the serviceability
of the plate. During the arbitration, the color difference between the repaired
sample and the sample before the test shall not be greater than 2 CIE units; the
high temperature resistance of agglomerated quartz which is not used as table
top materials shall be agreed between the supplier and the purchaser.
7 Test methods
7.1 Dimensional deviation
7.1.1 Specification and dimension deviation
The length and width of solid surface materials and agglomerated marble plates
shall be measured using a steel flat ruler with an accuracy of 0.1mm or a
measuring tool that meets the accuracy requirements; and the four sides of the
plate as well as the midpoint of each side shall be measured.
The length and width of agglomerated quartz plate shall be measured with a
measuring tool (steel flat ruler) with an accuracy of 1 mm; and the four sides of
the plate as well as the midpoint of each side shall be measured.
The thickness of the plate shall be measured using a vernier caliper with an
accuracy of 0.02mm. The measuring point at the end part shall be at least
10mm from the edge of the plate; and the thickness shall be measured at 3
equally-spaced points (which shall not be over 100mm from the edge) in both
the length and width directions.
7.1.2 Diagonal deviation
Measure the lengths of the two diagonals on the front of the same plate using
a steel flat ruler with an accuracy of 1 mm or a measuring tool that meet the
accuracy requirements; and calculate their difference.
7.1.3 Angle tolerance
Inspect it using a 90° steel square with the verticality tolerance of its inner angle
being 0.13 mm and the side length of its inner angle being 500 mm×400 mm.
Place the short side and long side of the angle square against those of the plate,
respectively. Measure the maximum gap between the long side of the plate and
that of the angle square with a feeler gauge. Measure any pair of across corners
if the long side of the plate is less than or equal to 500 mm; measure the four
corners if the long side of the plate is greater than 500 mm.
Express the angle tolerance of the plate by the measured value (accurate to
0.05 mm) of the maximum gap.
7.1.4 Flatness
Place the specimen on a standard plane; place the edge of a 1m steel flat ruler
on the frontal plane of the plate; then measure the maximum gap between the
edge of the steel flat ruler and that of the plate using a feeler gauge with an
accuracy of 0.01 mm.
7.1.5 Edge non-straightness
Place the edge of a 1 m steel flat ruler against the edge of the plate; then
measure the maximum gap between the edge of the steel ruler and that of the
plate using a feeler gauge with an accuracy of 0.01 mm. Measure it at the four
sides and take the maximum value.
7.2 Appearance quality
7.2.1 Place the specimen horizontally in the environment with the illuminance
of 800 lx~900 lx; observe it at an angle of 45°~75° from the horizontal plane
from a distance of 750 mm~900 mm (for solid surface materials) or 1,350
mm~1,500 mm (for agglomerated quartz and agglomerated marble).
7.2.2 Color the front of the specimen with 50% ink solution of black or blue or
a contrasting color with the product with a sponge or muslin; observe the
specimen in accordance with 7.2.1 to see whether there is any fracture, crack
or bubble on it. For the observed appearance defects that need to be measured,
their dimensions shall be measured using a vernier caliper with the minimum
division value of 0.02 mm. The appearance inspection of other inspection items
shall be carried out according to this article.
7.3 Barcol hardness
The Barcol hardness of solid surface materials shall be tested according to
those specified in GB/T 3854.
7.4 Mohs hardness
The Mohs hardness of agglomerated quartz and agglomerated marble shall be
tested according to those specified in Annex A.
7.5 Load deformation and impact toughness
7.5.1 Load deformation
The load deformation of solid surface materials shall be tested according to
those specified in Annex B.
7.5.2 Impact toughness
The Impact toughness of solid surface materials shall be tested according to
those specified in GB/T 2567.
7.6 Water absorption
Place the specimen in a drying oven at (55±5)℃ to dry it to constant weight;
then place it in a desiccator to cool it to room temperature. The remaining test
procedures shall be in accordance with those specified in GB/T 3810.3, with
the vacuum method adopted.
7.7 Falling ball impact
7.7.1 Solid surface materials
mm/min along the direction perpendicular to the bonding surface according to
the method specified in GB/T 9966.1 until it is broken. Record the maximum
load; divide the maximum load by the compression area to obtain the
compressive strength.
7.10 Abrasion resistance
The abrasion resistance of solid surface materials shall be tested according to
the requirements of 4.38 “Surface abrasion resistance” of GB/T 17657-1999.
And the test shall be conducted with a P120# emery cloth and a 500-g counter
weight, with the abrasive wheel rotating at a speed of 500 r. The abrasion
resistance of agglomerated quartz and agglomerated marble shall be tested
according to those specified in Annex C; the results shall be characterized with
volumetric method.
7.11 Coefficient of linear thermal expansion
The coefficient of linear thermal expansion shall be tested according to those
specified in Annex D.
7.12 Color fastness and aging resistance
Measure the chromaticity of solid surface material specimen according to those
specified in GB/T 11942; mark the measuring position; then carry out aging test
according to those specified in GB/T 16422.2. The temperature of blackboard
shall be (63±5) ℃; the radiant flux density shall be controlled at 0.35 W/m2 at
340 nm. The internal and external filter combination shall be made of high
silicon borate glass. No humidity control is required. After subjecting the
specimen for 200 h’s aging test, measure the color difference of the specimen
at the same position before and after the test.
7.13 Glossiness
Measure the glossiness of the solid surface material specimen at sufficient
places according to those specified in GB/T 13891. For each specimen, at least
5 parts of the specimen, i.e. the four corners and the center of the specimen
shall be measured. During the test, the consistency of the production direction
of the specimen shall be ensured. Calculate the average of all measured values
and take it as the test result.
7.14 Classification control of radioactivity protection
Classification control of radioactivity protection shall be tested according to
those specified in GB 6566.
7.15 Contamination resistance
The contamination resistance of solid surface materials and agglomerated
quartz used for table top materials shall be tested according to those specified
in Annex E.
7.16 Combustion resistance
7.16.1 Solid surface materials resistant to cigarette burning
Take one cigarette from each of the three brands of newly opened cigarettes
and ignite them; put them on the sample, with the burning ends inward, 50 mm
from the edge of the sample. After burning the cigarettes for (120±2)s, remove
the cigarettes. There shall be no open flame burning or smoldering on the
specimen. After the burning area is cooled, clean the burning area with a soft
cloth or soft brush; check the burning area. If there is obvious stain left, polish
it with a 400-mesh sandpaper and water until the stain disappears; then check
whether the appearance of the specimen is affected after polishing.
7.16.2 Flame resistance of solid surface materials
The oxygen index shall be tested according to those specified in GB/T 2406.2.
7.17 Chemical resistance
The chemical resistance of solid surface materials and agglomerated quartz
used for table top materials shall be tested according to those specified in
Annex F.
7.18 Heat resistance
For solid surface materials and agglomerated quartz used for table top
materials, the effective diameter of their samples shall be at least 250 mm; the
surfaces shall be flat and smooth. Put an aluminum plate with a diameter of 150
mm and a thickness of 7 mm into an oven (185±5)℃; maintain it for (15±0.5)min;
take it out and place it on the sample for (10±0.5)min; then remove it. Perform
this procedure three times continuously at the same test position. After keeping
it at room temperature for 4h, check its surface changes, such as fracture,
cracks, discoloration and other defects. In case of arbitration, the color
difference of the test position before and after the test shall be measured
according to those specified in GB/T 11942.
7.19 High temperature resistance
High temperature resistance of solid surface materials shall be tested according
to those specified in Annex G. In case of arbitration, the color difference of the
test position before and after the test shall be measured according to those
specified in GB/T 11942.
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