江习高速公路混凝土配合比优化设计  

Optimization of Concrete Mix Design on Jiangxi Expressway

作　　者：谭小军[1] 乔小龙[1] 何升泽[1] TAN Xiaojun;QIAO Xiaolong;HE Shengze(Sinohydro Bureau 5 Co., LTD,Chengdu,Sichuan,610066)

机构地区：[1]中国水利水电第五工程局有限公司,四川成都610066

出　　处：《四川水力发电》2021年第S01期10-13,34,共5页Sichuan Hydropower

摘　　要：为了更好地体现试验室价值,进一步提升企业在西南片区的竞争力,结合重庆地方标准及设计图纸要求,对江习高速公路混凝土配合比进行了优化。以C50配合比优化思路为例,在C50混凝土中使用了工程地机制砂与洞庭湖天然砂掺配而成的混合砂,在满足质量及施工要求的同时,降低了单独使用洞庭湖天然砂的工程成本,工程实践表明:在重庆地区预应力混凝土中使用天然砂与机制砂掺配的混合砂可行。In order to take better advantage of the laboratory and further enhance the competitiveness of Sinohydro Bureau 5 Co.,LTD in southwest China,mix design of concrete used in Jiangxi Expressway is optimized giving consideration to local standards and design requirements in Chongqing.Taking concrete C50 as an example,mixture of local crushed sand and natural sand from Dongting Lake is applied,which on one hand meets the quality and construction requirements and meanwhile reduces the project cost relaying on only natural sand from Dongting Lake.Engineering practice shows it is feasible to use mixture of natural and crushed sand in pre-stressed concrete in Chongqing.

关 键 词：配合比 优化 混合砂 江习高速公路 

分 类 号：U415.6[交通运输工程—道路与铁道工程] U414