粗骨料最大粒径对混凝土性能影响的试验研究  

Experimental study on the influence of maximum size coarse aggregate to concrete properties

作　　者：王宝媛[1] 刘秀杰 纪海军 丁长鑫[1] 

机构地区：[1]长春工程学院土木工程学院 [2]长春市产品质量监督检验院,长春130012 [3]中铁九局集团大连建设有限公司,大连116000

出　　处：《长春工程学院学报（自然科学版）》2012年第4期13-14,18,共3页Journal of Changchun Institute of Technology：Natural Sciences Edition

摘　　要：在相同配合比条件下,对粗骨料最大粒径为10mm,20mm,30mm,40mm和60mm的5组混凝土试件进行了试验研究。结果表明:混凝土的强度随粗骨料最大粒径的增加呈普遍增大的趋势。弹性模量的实测值与经验公式的计算值相差不大[1]。混凝土断裂韧度随粗骨料最大粒径的改变而变化,当Dmax=40mm时,断裂韧度均达到最大值。Under the condition of same mix proportion,five groups of concrete specimen with the maximum size of coarse aggregates about 10 mm,20 mm,30 mm 40 mm and 60 mm has been studied in this paper.The results show that the strength of concrete will increase with the increasing of maximum size of coarse aggregate.There is no difference between the elastic modulus values calculated by empirical formula and the experimental values[1].Fracture toughness of concrete will change with the maximum size of coarse aggregate.When Dmax = 40 mm,the fracture toughness of all specimen has reached the maximum values.

关 键 词：粗骨料最大粒径 抗压强度 弹性模量 断裂韧度 

分 类 号：TU528.041[建筑科学—建筑技术科学]