摘要
本研究从紧密堆积及改善新拌混凝土工作性出发 ,推导出砂率理论公式 ,进而引出密实系数的概念。通过 1 4 32组实验数据确定了密实系数用粗集料最大粒径做其表征的数值 ;并分析了密实系数对坍落度、最大粒径。
In this paper,theory calculation formula on S/A(sand coarse aggregate ratio)about ordinary concrete is established with the infilled aggregate coefficient defined,as.e\-s.and the method of determining infilled aggregate coefficient,which is based on the max diameter of coarse aggregate D\-\{max\},has been verified by 1432 groupsox experiments.Through these experiments,the effecting of e\-s on slump of fresh concrete,D\-\{max\} and total aggregate cement rationn has been discussed sufficiently.
出处
《混凝土》
CAS
CSCD
2002年第8期9-11,共3页
Concrete
基金
中国工程建设标准化协会<火灾后建筑结构可靠性鉴定标准>编制基金资助 (98)建标协字第 0 8号 )
冶金部建筑研究院科研基金资助 (990 2 4 )
关键词
混凝土
密实系数
砂率
concrete,S/A(sand coarse aggregate ratio),infilled aggregate coefficient
