Standard for concrete hollow blocks

Concrete hollow block: design wall thickness is 100mm, specifications are 390mm×100mm×190mm and 390mm×200mm×190mm. The curing period shall not be less than 28 days, and the product certificate and quality guarantee certificate shall be required. After entering the site, the strength grade, drying shrinkage rate and relative moisture content shall be tested by witness sampling.

Concrete hollow block

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