T/AHQWC 002-2020 Waste Concrete Bricks

Scope

Main technical content: In order to standardize the quality management of waste residue concrete bricks and improve their quality, this standard is formulated. This standard specifies the terms and definitions, specifications, grades, codes and markings, raw materials, technical requirements, test methods, inspection rules, product quality certificates, stacking and transportation, etc. of waste residue concrete bricks. In this standard, waste residue concrete bricks refer to bricks made from various industrial waste residues or waste materials (including stone powder, stone chips, fly ash, slag, construction waste, etc.) as the main aggregates, with cement as the binder material. Adequate amounts of sand, stone, admixtures, and other additives can be added. They are made by mixing, forming, and curing with cement. This standard specifies the requirements for the raw materials used in product production (such as cement, fine aggregate, coarse aggregate, admixtures, additives, mixing water, etc.) and their limits on radioactive nuclides. The technical requirements of this standard set clear requirements for the dimensional deviation, appearance quality, density grade, strength grade, maximum water absorption, dry shrinkage rate and relative moisture content, frost resistance, carbonization coefficient, softening coefficient, and radioactivity of waste residue concrete bricks. At the same time, it also stipulates the corresponding test methods and inspection rules.

Development Information

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