JC/T 547-2017 English PDF (JC/T547-2017)

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JC/T 547-2017: Adhesives for ceramic tiles
JC/T 547-2017
JC
BUILDING MATERIAL INDUSTRY STANDARD
OF THE PEOPLE’S REPUBLIC OF CHINA
ICS 91.100.50
Q 27
Filing No.: 58659-2017
Replacing JC/T 547-2005
Adhesives for ceramic tiles
陶瓷砖胶粘剂
ISSUED ON: APRIL 12, 2017
IMPLEMENTED ON: OCTOBER 01, 2017
Issued by: Ministry of Industry and Information Technology of PRC
Table of Contents
Foreword ... 4
1 Scope ... 7
2 Normative references ... 7
3 Terms and definitions ... 7
4 Classification, code and marking ... 10
4.1 Classification and code ... 10
4.2 Marking... 12
5 General requirements ... 12
6 Technical requirements ... 12
6.1 Cementitious adhesive (C) ... 12
6.2 Requirements for dispersion adhesive (D) ... 13
6.3 Requirements for reactive resin adhesive (R) ... 14
7 Test method ... 14
7.1 Specimen ... 14
7.2 Test conditions ... 14
7.3 Test materials ... 15
7.4 Mixing steps ... 15
7.5 Test substrate ... 16
7.6 Failure mode ... 16
7.7 Test report ... 17
7.8 Determination of open time ... 18
7.9 Determination of slip ... 20
7.10 Determination of shear adhesion strength (D, R) ... 22
7.11 Determination of tensile adhesion strength (C) ... 29
7.12 Determination of lateral deformation ... 31
8 Inspection rules ... 35
8.1 Inspection classification ... 35
8.2 Group batching ... 36
8.3 Sampling ... 36
Adhesives for ceramic tiles
1 Scope
This standard specifies the terms and definitions, classification, code and marking,
general requirements, technical requirements, test methods, inspection rules, marking,
packaging, transportation and storage of adhesives for ceramic tile (hereinafter referred
to as adhesives).
This standard applies to adhesives for internal and external wall and floor ceramic tiles.
This standard does not include technical requirements for guiding the design and
installation of ceramic tiles.
This standard does not include the evaluation or recommendation of the design and use
of ceramic tiles.
2 Normative references
The following documents are essential to the application of this document. For the dated
documents, only the versions with the dates indicated are applicable to this document;
for the undated documents, only the latest version (including all the amendments) is
applicable to this standard.
GB 175 Common Portland cement
GB/T 4100-2015 Ceramic tiles
JC/T 681 Planetary cement mortar mixer
JC/T 958-2005 Flow table for determine mortar fluidity
3 Terms and definitions
The following terms and definitions apply to this document.
3.1
Fixing surface
Fixing surface for ceramic tiles.
allowed to mature as required. If not, mature for 15 minutes and then continue to stir
for 15 seconds.
7.4.2 Dispersion adhesive (D) and reactive resin adhesive (R)
The use of dispersion adhesive and reactive resin adhesive shall be carried out in
accordance with the manufacturer's requirements.
7.5 Test substrate
7.5.1 Test concrete slab substrate
The test concrete slab adopts two sizes: 400 mm × 400 mm × 40 mm and 400 mm ×
200 mm × 40 mm. If the test results are controversial, the 400 mm × 400 mm × 40 mm
concrete slab shall be used. The moisture content of the concrete slab shall be less than
3% (mass percentage); the surface water absorption in 4h shall be controlled between
0.5 cm³ and 1.5 cm³. The preparation and requirements of concrete slabs are shown in
Appendix A. The test concrete slab shall be placed under standard test conditions for 3
months before testing. The slab can also be placed at 105 °C for 5h and then placed
under standard test conditions for 24h before use. Where there is a dispute between the
two test results, the result of the concrete slab substrate that has been placed for more
than 3 months shall prevail.
7.5.2 Other substrates
The use of other substrates (when the adhesive manufacturer recommends the use of
ceramic tiles on the substrate) shall be permitted. To prove the compatibility with other
optional substrates, the adhesive shall be selected based on the tensile adhesion strength
test. When the test result is greater than the strength requirement of the adhesive of that
grade or the substrate undergoes cohesive failure, the requirement is considered to be
met.
7.6 Failure mode
7.6.1 Adhesive failure - AF-S or AF-T
The test value is equal to the adhesion strength when the failure occurs at the interface
between the adhesive and the substrate (AF-S) or the interface between the adhesive
and the ceramic tile (AF-T) (see Figures 1a) and 1b)). In some cases, the failure may
occur in the bonding layer (BF) between the ceramic tile and the pull head (see Figure
1c)). In this case, the adhesion strength is greater than the test value, the test data is
invalid, the test shall be repeated.
7.6.2 Cohesive failure of adhesive - CF-A
The test report shall include the following:
a) The standard implemented;
b) The test date;
c) The type of adhesive, brand, manufacturer's name;
d) The source of specimen, the date of sampling, complete specimen information;
e) The specimen handling and storage method before the test;
f) Test conditions;
g) The amount of water or liquid used to prepare the adhesive;
h) Other factors that may affect the test results;
i) Test results (if necessary, single values, average values and failure modes shall be
included).
7.7.2 Test results of cementitious adhesives and dispersion adhesives
The test report shall report the following information:
a) Open time;
b) Slip;
c) Shear adhesion strength;
d) Tensile adhesion strength;
e) Transverse deformation.
7.8 Determination of open time
7.8.1 General
The open time test shall be carried out according to the standard test conditions and
steps specified in 7.2 and the following provisions.
7.8.2 Test materials
7.8.2.1 Ceramic tiles: Category BIII dry-pressed ceramic tiles that meet the
requirements of Appendix L of GB/T 4100-2015 [water absorption rate is (15 ± 3)%
when measured by boiling method], with surface dimensions of (50 ± 1) mm × (50 ± 1)
mm, thickness of 7 mm ~ 10 mm, depth of back contour pattern less than 0.25 mm.
A - bonding area, 2500 mm².
The tensile adhesion strength is calculated as follows:
a) Calculate the arithmetic mean of 10 data;
b) Discard values that exceed ±20% of the mean value;
c) If the retained data is greater than or equal to 5 values, re-calculate the average
value;
d) If there are less than 5 values, retest;
e) Report the failure mode of each sample (see 7.6).
The unit of the open time is minutes (min).
7.8.6 Test report
The test report shall include 7.7.1 (a ~ i) and 7.7.2 a. The open time is in minutes (min).
7.9 Determination of slip
7.9.1 General
The slip test shall be carried out according to the standard test conditions and procedures
specified in 7.2 and the following provisions.
7.9.2 Test materials
7.9.2.1 Ceramic tiles: Category AIa extruded ceramic tiles in accordance with the
requirements of Appendix A of GB/T 4100-2015 [water absorption (0.1% ~ 0.5%)
measured by boiling method], unglazed, surface size (100 ± 1) mm × (100 ± 1) mm,
mass (200 ± 10) g, thickness 8 mm ~ 10 mm.
7.9.2.2 Test substrate: in accordance with the requirements of 7.5.1.
7.9.3 Instruments
7.9.3.1 Steel ruler.
7.9.3.2 Clamp.
7.9.3.3 Masking tape: 25 mm wide.
7.9.3.4 Spacers: Two stainless steel (25 ± 0.5) mm × (25 ± 0.5) mm × (10 ± 0.5) mm
spacers.
7.9.3.5 Press block: Cross-sectional dimensions (100 ± 1) mm × (100 ± 1) mm, mass:
(5.00 ± 0.015) kg.
7.9.3.6 Vernier caliper: Accuracy 0.01 mm.
7.9.4 Test steps
Ensure that the edge of the steel ruler is placed on the top of the concrete slab and is
level with the bottom edge of the steel ruler, when the concrete slab is erected. Apply
25 mm wide masking tape close to the bottom edge of the steel ruler. Apply a thin layer
of adhesive to the concrete slab with a straight-edged spatula.
Apply another thick layer of adhesive to the surface of the concrete slab to just cover
the bottom of the masking tape. Comb with a 6 mm × 6 mm (center distance 12 mm)
notched trowel.
When holding the notched trowel, it shall be about 60° to the concrete slab and applied
parallel to the edge of the concrete slab.
Remove the masking tape immediately and place a 25 mm wide spacer (or spacer strip)
close to the lower edge of the steel ruler. After 2 minutes, place a ceramic tile that meets
the requirements of 7.9.1.1 close to the spacer; place a press block with a mass of (5.00
± 0.015) kg on the ceramic tile for (30 ± 5) s.
After removing the spacer, use a vernier caliper to measure the distance between the
edge of the ruler and the tile, accurate to ±0.1 mm. Immediately after the measurement,
carefully stand the concrete slab vertically (see Figure 2). Remeasure the distance
between the edge of the ruler and the tile after (20 ± 2) minutes. The difference between
the two measurement readings is the maximum sliding distance of the tile under its own
weight.
samples are required for each test.
7.10.4 Adhesion strength (D, R)
7.10.4.1 10 samples are cured under the conditions of 7.2; the reaction resin adhesive
is cured for 7 days; the dispersion adhesive is cured for 14 days.
7.10.4.2 After curing under the conditions of 7.2, the samples are placed in a shear
fixture and a shear force is applied to the sample at a speed of (5 ± 0.5) mm/min until
they are broken.
Test results: Expressed in Newton (N).
7.10.5 Adhesion strength after immersion in water (D, R)
10 samples are cured under the conditions of 7.2; the enhanced adhesive (D2) is cured
for 21 days or the accelerated drying adhesive and reaction resin adhesive (R) are cured
for 7 days. Then they are immersed in (23 ± 2) °C water, reaction resin adhesive (R) for
21 days, dispersion adhesive (D2, D2A) for 7 days.
Remove the specimen and wipe the moisture with a cloth. Test according to 7.10.4.2.
Test results: Expressed in Newton (N).
Note: This test is only for dispersion ceramic tile adhesives used in indoor humid environments.
7.10.6 Adhesion strength after heat aging (D)
10 samples are cured for 14 days under the conditions of 7.2, then placed in an air
circulation oven at (70 ± 2) °C for another 14 days. It shall be ensured that the air around
each sample flows freely.
After the sample is taken out, it is cured for 24 hours under the conditions of 7.2 and
tested according to 7.10.4.2.
Test results: Expressed in Newton (N).
7.10.7 Adhesion strength at high temperature (D)
According to the test steps specified in 7.10.6, the adhesion strength of the sample is
tested 1 minute after the sample is taken out of the oven.
Test results: Expressed in Newton (N).
7.10.8 Adhesion strength after thermal shock (R)
After curing 10 samples under 7.2 for 7 days, immerse the specimens in (23 ± 2) °C
water for 30 minutes; then heat them in a (100 ± 2) °C water bath for another 30 minutes.
of Appendix A of GB/T4100-2015 [water absorption of 0.1% ~ 0.5% as determined by
boiling method], with surface dimensions of (50 ± 1) mm × (50 ± 1) mm, thickness of
(5 ± 2) mm, and unglazed flat bonding surface.
7.11.2.2 Test substrate: In accordance with the requirements of 7.5.1.
7.11.3 Test instrument
7.11.3.1 Press block, cross-sectional dimensions of 50 mm × 50 mm, mass of (2.00 ±
0.015) kg.
7.11.3.2 Puller, a square metal block with dimensions of (50 ± 1) mm × (50 ± 1) mm
and a minimum thickness of 10 mm, connected to the testing machine with an
appropriate device.
7.11.3.3 The tensile testing machine shall have an appropriate range and an accuracy of
1%. The testing machine that directly applies tensile force shall apply a load of (250 ±
50) N/s to the puller through a suitable device that does not generate any bending force.
7.11.3.4 Blast drying oven, which has a temperature control accuracy of ±3 °C.
7.11.4 Test steps
7.11.4.1 Preparation of samples
Perform as specified in 7.8.4.
7.11.4.2 Tensile adhesion strength
After curing for 27 days under the conditions of 7.2, use a suitable high-strength
adhesive (such as epoxy adhesive) to stick the puller to the tile. Continue to place it
under the conditions of 7.2 for 24 hours; measure the tensile adhesion strength of the
adhesive at a loading rate of (250 ± 50) N/s. If you want to test a fast-setting adhesive,
stick the puller to the tile at least 2 hours before the test.
Test results: Expressed in Newton (N).
7.11.4.3 Tensile adhesion strength after immersion in water
After curing for 7 days under the conditions of 7.2, immerse the sample in water at
standard temperature. After immersion in water for 20 days, remove the sample from
the water; wipe off the surface moisture with a cloth; stick the puller to the tile. Continue
to place it under the conditions of 7.2 for 7 hours; immerse the sample in water at
standard temperature. After 17 hours, take the sample out of the water and immediately
measure the tensile adhesion strength of the adhesive at a loading rate of (250 ± 50) N/s.
Test results: Expressed in Newton (N).
7.11.4.4 Tensile adhesion strength after heat aging
After curing for 14 days under the conditions of 7.2, place the sample in an oven at (70
± 3) °C for 14 days. After removing the sample from the oven, stick the puller to the
tile with a suitable high-strength adhesive (such as epoxy adhesive). Continue to cure
for 24 hours under the conditions of 7.2; measure the tensile adhesion strength of the
adhesive at a loading rate of (250 ± 50) N/s.
Test results: Expressed in Newton (N).
7.11.4.5 Tensile adhesion strength after freeze-thaw cycles
Prepare the sample according to 7.8.4. Before placing the tiles, apply about 1 mm thick
adhesive on the back of the tiles with a straight-edged spatula. Before conducting 25
freeze-thaw cycle tests, the samples are cured for 7 days under the conditions of 7.2,
then immersed in water for 21 days.
Each freeze-thaw cycle is as follows:
a) Remove the sample from the water; cool it to (-15...