This standard specifies the terms and definitions, classifications, grades and marks, material requirements, technical requirements, measurement methods, inspection rules as well as marking, packaging, transport and storage of natural marble building slabs (hereinafter referred to as slabs).
This standard is applicable to natural marble slabs for architectural ornament. It may also serve as a reference for natural marble slabs used for other purposes.
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/T 191 Packaging - Pictorial marking for handling of goods
GB/T 9966.1 Test methods for natural facing stones - Part 1: Dry, wet and after freezing test methods for compressive strength
GB/T 9966.2 Test methods for natural stone - Part 2: Determination of dry, wet and after freezing flexural strength
GB/T 9966.3 Test methods for natural facing stones - Part 3: Test methods for bulk density, true density, true porosity and water absorption
GB/T 9966.4 Test methods for natural facing stones - Part 4: Test method for abrasion resistance
GB/T 13890 Terms for natural stone
GB/T 13891 Test methods of specular gloss for decorative building materials
GB/T 17670 Unified catalogue for natural stone
GB/T 18601-2009 Natural granite for building slab
GB 24264 Adhesives for facing stones
GB/T 32837 Protectant for natural stone
JC/T 202 Quarry stone of natural marble
3 Terms and definitions
For the purpose of this document, the terms and definitions given in GB/T 13890 and JC/T 202 apply.
4 Classifications, grades and marks
4.1 Classifications
4.1.1 By mineral composition, they are divided into:
a) Calcite marble (code: FL);
b) Dolomite marble (code: BL);
c) Serpentine marble (code: SL).
4.1.2 By shape, they are divided into:
a) Original gloss bat slab (code: MG);
b) Normal slab (code: PX);
c) Arc slab (code: HM);
d) Irregular slab (code: YX).
4.1.3 By surface working, they are divided into:
a) Polished slab (code: JM);
b) Roughing slab (code: CM).
4.2 Grades
They are divided into Grades A, B and C based on the processing quality and appearance quality.
4.3 Marks
4.3.1 Name: Use the name or number specified in GB/T 17670.
4.3.2 Sequence: name, category, specification/dimension, grade and standard number.
4.3.3 Examples:
GB/T 19766-2016 The following standards are cited：
