石粉含量对C60机制砂混凝土拌合物性能的影响  

Eff ect of Stone Powder Content on the Performance of C60 Mechanized Sand Concrete Mixtures

作　　者：许涛 苗超杰 邓利平 沈锐 叶建雄[4] 曾路[4] Xu Tao;Miao Chaojie;Deng Liping;Shen Rui;Ye Jianxiong;Zeng Lu(Construction Engineering Co.,Ltd.,China Railway Eighth Engineering Group,Sichuan,610000;Chongqing Yuxiang Double Line Expressway Co.,Ltd.,Chongqing,400044;Chongqing Major Construction Engineering Quality Inspection Co.,Ltd.,Chongqing,400044;Chongqing University,Chongqing,400044)

机构地区：[1]中铁八局集团建筑工程有限公司,四川610000 [2]重庆渝湘复线高速公路有限公司,重庆400044 [3]重庆重大建设工程质量检测有限公司,重庆400044 [4]重庆大学,重庆400044

出　　处：《当代化工研究》2024年第20期67-69,共3页Modern Chemical Research

摘　　要：本文通过改变不同来源的石粉掺量,来研究混凝土中总石粉含量对混凝土工作性能、力学性能、早期抗裂性能的影响。研究结果表明:适量的石粉含量有助于提升混凝土的性能,当其含量超过一定限值后,会降低混凝土坍落度,增加混凝土的早期开裂风险,降低混凝土的抗压强度;在机制砂混凝土中,石粉含量建议控制在混凝土质量的7%以内;掺合料石粉含量限值随着机制砂石粉含量的增加而降低,在机制砂石粉含量为6%、9%、12%、16%时,掺合料石粉掺量建议分别控制在25%、20%、15%、10%以内,混凝土性能较优。This article studies the influence of total stone powder content in concrete on its workability,mechanical properties,and early crack resistance by changing the amount of stone powder from different sources.The research results indicate that in machine-made sand concrete,it is recommended to control the stone powder content within 7%of the concrete mass;The limit of stone powder content in admixtures decreases with the increase of machine-made sand and stone powder content.When the machine-made sand and stone powder content is 6%,9%,12%,and 16%,it is recommended to control the amount of stone powder in admixtures within 25%,20%,15%,and 10%,respectively,for better concrete performance.

关 键 词：总石粉含量 工作性能 力学性能 早期抗裂 

分 类 号：TU[建筑科学]