骨料对配制C80～C90高强混凝土的影响  

Effect of aggregate to research C80～C90 high-strength concrete

作　　者：王军[1,2] 陈景[1] 孙克平[1] 高育欣[1] 徐芬莲[1] 

机构地区：[1]中建商品混凝土有限公司,湖北武汉430074 [2]武汉理工大学硅酸盐材料工程教育部重点实验室,湖北武汉430070

出　　处：《混凝土》2010年第3期71-73,共3页Concrete

摘　　要：通过试验研究了粗骨料的级配与强度、砂的细度模数以及砂率等因素对配制C80-C90高强混凝土的影响。试验结果表明：粗骨料的级配达到孔隙率较低时有利于提高混凝土的强度,粗骨料的强度对混凝土强度的影响与其砂浆强度关系密切;砂的细度模数在2.6-2.9范围内对混凝土的性能影响不大;砂率存在一个最佳值,约为41%时混凝土的综合性能较好。The impact of coarse aggregate gradation and strength,fineness modulus of sand and sand ratio on research C80-C90 high-strength concrete was studied.The result of the experiment showed that coarse aggregate gradation to achieve lower voidage help to improve the strength of concrete,the effect of coarse aggregate strength to concrete strength closed to its strength of mortar.Fineness modulus of sand within 2.6~2.9 had little effect on the the performance of concrete.There is an optimum value of the sand ratio,when it＇s about 41% the comprehensive performance of concrete was better.

关 键 词：骨料 高强混凝土 级配 砂率 

分 类 号：TU528.041[建筑科学—建筑技术科学]