集料性质对卵石混凝土性能影响的试验研究  

Study of the influence of coarse aggregate properties on the performance of pebble concrete

作　　者：王立久[1] 刘莎[1] 张立卿[1] 董晶亮[1] 

机构地区：[1]大连理工大学建设工程学部,辽宁大连116024

出　　处：《混凝土》2014年第4期1-4,共4页Concrete

摘　　要：通过试验研究了卵石最大粒径及空隙率对混凝土坍落度及抗压强度的影响。结果表明:随卵石最大粒径的增大,混凝土的坍落度逐渐增大;在卵石混凝土中,存在骨料的粒径效应,混凝土的抗压强度随卵石最大粒径的增大而减小,混凝土强度等级越高,粒径效应越明显;卵石空隙率越低,混凝土的抗压强度越高。The influence of maximum aggregate size（dmax） and void fraction of coarse aggregate on slump and compression strength of pebble concrete was investigated.It was founded that the slump of fresh concrete increased with the increase of dmax.The coarse aggregates have the most grain size effect.By increasing the dmax of coarse aggregate, the compression strength of pebble concrete reduced.The high- er of the concrete strength grade ,the more obvious of the effect.By decreasing the void fraction of coarse aggregate, the compression strength of pebble concrete increased.

关 键 词：卵石 混凝土 最大粒径 抗压强度 

分 类 号：TU528.041[建筑科学—建筑技术科学]