JC/T 746-2007 (JC/T 746-2023 Newer Version) PDF English
JC/T 746-2007 (JC/T746-2007, JCT 746-2007, JCT746-2007)
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| JC/T 746-2007 | English | 125 |
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Newer version: JC/T 746-2023 Standards related to (historical): JC/T 746-2023
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JC/T 746-2007: PDF in English (JCT 746-2007) JC/T 746-2007
JC
BUILDING MATERIAL INDUSTRY STANDARD
OF THE PEOPLE’S REPUBLIC OF CHINA
ICS 91.100.30
Q 17
Registration number. 22914-2008
Replacing JC 746-1999
Concrete tiles
混凝土瓦
ISSUED ON. SEPTEMBER 22, 2007
IMPLEMENTED ON. APRIL 01, 2008
Issued by. National Development and Reform Commission of People’s
Republic of China
Table of contents
Foreword ... 3
1 Scope ... 5
2 Normative references ... 5
3 Definitions, structures, symbols and abbreviations ... 6
4 Classification, specification and identification ... 13
5 General provisions ... 13
6 Requirements ... 14
7 Sampling ... 16
8 Test method ... 17
9 Inspection rules ... 19
10 Marking, product quality certificate and use manual ... 20
11 Packaging, storage and transportation ... 21
Appendix A (Normative) Detection method of appearance quality and
allowable dimensional deviation... 23
Appendix B (Normative) Bearing capacity test method ... 27
Appendix C (Normative) Test method for thermal resistance and water
absorption ... 32
Appendix D (Normative) Test method for impermeability ... 35
Appendix E (Normative) Test method for frost resistance ... 37
Appendix F (Informative) Inspection report format ... 39
Foreword
This standard is the revision of JC 746-1999 “Concrete tiles”.
The main changes in this standard as compared with JC 746-1999 are as
follows.
- REDEFINE the technical indicators and judgment rules of the bearing
capacity;
- ADD the thermal resistance performance and test methods;
- ADD the technical indicators and test methods of the mass standard
deviation;
- ADD the provisions on the radionuclide limit of the concrete tiles as
manufactured from industrial waste residue;
- ADD the inspection report filling format;
- SIMPLIFY the test methods of covering width;
- CANCEL the provisions of dividing into three levels - excellent products (A),
first class products (B), and qualified products (C) - based on the physical
and mechanical properties;
Appendix A, Appendix B, Appendix C, Appendix D, and Appendix E of this
standard are normative appendixes, AND Appendix F is an informative
appendix.
This standard shall, from the date of implementation, replace JC 746-1999.
This standard was proposed by China Building Materials Industry Association.
This standard shall be under the jurisdiction of the National Standardization
Technical Committee for Cement Products.
The responsible drafting organizations of this standard. Liaoning Institute of
Building Materials Science, Lafarge Roofing System (China) Limited.
The participating drafting organizations of this standard. China Construction
Northeast Design and Research Institute, Changzhou Huamei Building
Materials Co., Ltd., Wuxi Fuji Colored Tiles Co., Ltd., Harbin Langen Colored
Tiles Manufacturing Limited Liability Company, Shanghai Sheshanhong New
Building Materials Co., Ltd., Quanzhou Qunfeng Machinery Manufacturing Co.,
Ltd., Liaoning Xinxin Group Building Materials Co., Ltd., Beijing Yipinhong
Concrete tiles
1 Scope
This standard specifies the definition, structure, symbol, abbreviation,
classification, specification, identification, general rules, requirements,
sampling, test methods, inspection rules, marking, product quality certificate,
instruction manual, packaging, storage and transportation of concrete tiles.
This standard is applicable to concrete sloping roof tiles made of cement, fine
aggregate, water, and other main raw materials through mixing, extrusion,
hydrostatic molding, or other molding methods AND their matching concrete
fitting tiles. The concrete tiles may be native tiles, colored tiles or surface
treated tiles.
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 175 Portland cement and ordinary portland cement
GB 1344 Portland blast furnace slag cement, Portland pozzolana cement,
and Portland flay-ash cement
GB/T 1596 Fly ash used for cement and concrete
GB/T 2015 White portland cement
GB 6566 Limit for radionuclides in building materials
GB 8076 Concrete admixtures
GB 12958 Composite portland cement
GB/T 14684 Sand for construction
JC/T 539 Pigments used in concrete and mortar and their test method
JC/T 870 Colored portland cement
JGJ 63 Standard of water for concrete
YBJ 205-1984 Technical requirements for blast furnace heavy crushed slag
for concrete use
3 Definitions, structures, symbols and abbreviations
The following terms and definitions apply to this standard.
3.1 Definition
3.1.1
Concrete tiles
It is a general term of roofage tiles and fitting tiles made of concrete.
3.2.2
Concrete roofage tiles
It refers to the building product made of concrete AND paved on the sloping
roof to function as tiled roof together with the fitting tiles (shortly referred to
as the roofage tiles).
3.1.2.1
Concrete roofage wavy tiles
It refers to the tiles paved on the sloping roof, for which the cross section is
in wave shape (shortly referred to as wavy tiles).
3.2.2.2
Concrete roofage flat tiles
It refers to the tiles paved on the sloping roof, for which the cross section
edge is in straight line shape (shortly referred to as flat tiles).
3.1.3
Concrete fittings tiles
It refers to the building products made of concrete AND paved on the
specific location of the sloping roof to satisfy the special functional
Bx - Lower base width of the roofage tile for which the front projection is right
angle trapezoidal, in millimeters (mm);
b1 - Covering width of the roofage tile, in millimeters (mm);
b2 - Overlap width of the roofage tile, in millimeters (mm);
d - Ridge height of the roofage tile, in millimeters (mm);
F - Bearing capacity, in Newton (N);
F1, F2, F3, ... Fn - Measured bearing capacity value of single sample, in Newton
(N);
Fav - Measured average of the carrying capacity, in Newton (N);
Favf - Measured average of the bearing capacity after freezing, in Newton (N);
Fe - Standard value of bearing capacity, in Newton (N);
Ff - Bearing capacity after freezing, in Newton (N);
F1f, F2f, F3f - Measured value of bearing capacity of single roofage tile after
freezing, in Newton (N);
Fi - Measured value of bearing capacity of the ith tile, in Newton (N);
L - Length of the roofage tile, in millimeters (mm);
Lx - Length of the oblique side of the roofage tile for which the front projection is
a right angle trapezoid, in millimeters (mm);
Lz - Length of the right-angle side of the roofage tile for which the front
projection is a right-angle trapezoid, in millimeters (mm);
l - Hanging length of the roofage tile, in millimeters (mm), l = [(l1 x l2)/2];
l1 - Left hanging length of roofage tile at normal use, in millimeters (mm);
l2 - Right hanging length of roofage tile at normal use, in millimeters (mm);
mav - Measured average of mass, in grams (g);
m1, m2, m3 ... mn - Measured mass of single sample, in grams (g);
mb - The saturated mass of the sample, in grams (g);
m0 - The dry mass of the sample, in grams (g);
n - Number of samples, in pieces;
W - Water absorption, %;
σ - Standard deviation of bearing capacity, in Newton (N);
σm - Standard deviation of mass, in grams (g).
3.4 Abbreviations
English abbreviations of different kinds of concrete tiles are as follows.
CT - Concrete tiles;
CRT - Concrete roofage tiles;
CRWT - Concrete roofage wavy tiles;
CRFT - Concrete roofage flat tiles;
CFT - Concrete fitting tiles;
CST - Concrete ridge tiles;
CUFT - Concrete unidirectional ridge tiles;
CTST - Concrete three-way ridge tiles;
CFDT - Concrete four-way ridge tiles;
CFRT - Concrete flat ridge tiles;
CSRT - Concrete slanting ridge head tiles;
CDFT - Concrete patterned ridge tiles;
CCT - Concrete cornice tiles;
CCST - Concrete cornice sealing tiles;
CCTT - Concrete cornice top tiles;
CVT - Concrete ventilation tiles;
CVPT - Concrete ventilation pipe tiles;
CDT - Concrete drain tiles.
4 Classification, specification and identification
4.1 Classification
Concrete tiles are divided into. concrete roofage tiles and concrete fitting tiles.
AND the concrete roofage tiles are further divided into. roofage wavy tiles and
roofage flat tiles.
4.2 Specifications
The specifications of the concrete tiles are expressed ...
......
Source: Above contents are excerpted from the PDF -- translated/reviewed by: www.chinesestandard.net / Wayne Zheng et al.
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