本文研究了砂率、级配、最大粒径、针片状含量、含泥量、颗粒形状指数和粗集料种类对早期自收缩的影响。砂率越小,混凝土的自收缩值越小;粗集料粒径越大或粗集料中大颗粒含量越多,自收缩值越小;针片状颗粒含量大的混凝土的早期自收缩值大;粗集料含泥量越大,自收缩值越大;粗集料颗粒形状指数越大,混凝土的自收缩值越小;其它条件相同时,粗集料弹性模量越大,混凝土的自收缩值越小。 In this paper, the effects of sand rate, grading, maximum particle size, needle flake content, clay content, particle shape index and coarse aggregate type on early self-shrinkage were studied. The smaller the sand rate, the smaller the self-shrinkage value of the concrete. The larger the coarse aggregate size or the larger the coarse aggregate content, the smaller the self-shrinking value. The early shrinkage value The larger the coarse aggregate content, the greater the self-shrinkage value. The larger the coarse aggregate particle shape index, the smaller the self-shrinkage value of the concrete. When the other conditions are the same, the greater the elastic modulus of the coarse aggregate, Since the shrinkage value is smaller.