混凝土中含气量影响因素的研究  

STUDY ON FACTORS INFLUENCING AIR CONTENT OF AIR-ENTRAINED CONCRETE

作　　者：李兴翠[1] 邓德华[1] 何富强[1] 

机构地区：[1]中南大学土木建筑学院,湖南长沙410075

出　　处：《低温建筑技术》2008年第1期17-19,共3页Low Temperature Architecture Technology

摘　　要：通过实验分析了引气混凝土中含气量的若干影响因素，结果显示：相同引气剂掺量下，中热硅酸盐水泥的含气量要低于普通硅酸盐水泥；含气量与水灰比和砂率都是成正比关系，即水灰比越高含气量越大，砂率越高含气量也越大；随着粉煤灰含量的升高含气量逐渐降低；掺加引气剂的混凝土的最佳搅拌时间为3～5min。This paper analyzes factors influencing air content of air- entrained concrete through experiments. Results show that with the same dosage of air - entraining agent, air content of moderate - heat Portland cement concrete is less than that of common Portland cement concrete; increment of water cement ratio and ratio of sand to aggregates can increases air content of concrete; with increased fly ash content in concrete, air content of concrete decreases;optimum mixing time of air- entrained concrete is 3 - 5 minutes.

关 键 词：引气剂 含气量 影响因素 

分 类 号：TU528.042[建筑科学—建筑技术科学]