【摘要】 钢筋混凝土结构的工程质量对建筑物的实用性、安全性及耐久性有决定性的影响。为确保混凝土的强度满足设计要求 ,结合工程实际情况 ,从混凝土施工强度的确定、原材料的选择、水泥强度等级的选择、水泥用量的控制、砂石的级配、水量的调整、塌落度等几个现场制备混凝土容易被忽视的问题作了简要叙述更多还原

【Abstract】 The engineering quality of the reinforced concrete structure exerts a decisive influence on practicability, safety and durability of the construction. In order to ensure the strength of concrete meeting the design request, this paper, based on actual practice, studies some problems frequently to be ignored in producing concrete on site, involving the decision of concrete working strength, selection of raw material & cement strength level, control of cement amount, gradation of aggregates, and slump.更多还原