对商品溷凝土的技巧质量请求 (主动保留的)(国外英文资料).docVIP

对商品溷凝土的技术质量要求 (自动保存的)(国外英文资料) Technical quality requirements for commercial concrete Party a: Party b: the commodity concrete mixing station The structural concrete strength grades are C15, C20, C25, C30, C35, C35 (P6), C40, C40 (P8) C50, C50 (P8), C60 etc. Party a provides the technical requirements of commercial concrete, provide the commodity concrete pouring position, strength grade, admixture requirements, technical parameters such as volume to party b, party b to provide qualified products according to the requirement of concrete. Party b shall strictly control in the following areas: One, raw materials: The raw material of party b for the commodity concrete (mortar) must meet the requirements of the present state, provide the present certificate and the reinspection report. Among them: 1, cement: choose ordinary Portland cement concrete, concrete strength is not greater than the C40 concrete, using cement mark for the P.O 42.5, the minimum cement dosage is not less than 300 kg/m3, water cement ratio not greater than 0.6, alkali content, chloride ion content requirements in line with the current national standard requirements, and other projects. The project is divided into four center reticle construction area, by the two commodity concrete mixing station supply, in order to ensure the quality and appearance of the main structure color is consistent, should choose the same manufacturer the same varieties of cement. 2, sand, stone, should conform to the current national standard of the normal concrete with sand quality standard and inspection method (JGJ52-2006), into the factory should have the factory certificate and retest report. Mixing water and water: water quality should be in accordance with the requirements of the water standard for concrete water (jgj63-2006). : 4, admixture should be consistent with existing national standards concrete admixture (GB8076-2008), technical specification for concrete admixture applications (GB50119-2003) and the regula