“补钙”粉煤灰混凝土可泵性的材料措施研究  

Research on the Material Measures of Improving the Pumpability of Fly Ash Concrete with a Certain Content of CaO

作　　者：梁谦 程建萍 李星 赵海龙 Liang Qian Cheng Jian-ping Li Xing Zhao Hai-long(College of Civil Engineering Hexi University Institute Water Resources Protection and Utilization in Hexi Corridor, Zhangye Gansu 734000 Gansu Lintao County Water Bureau, Dingxi Gansu 730500)

机构地区：[1]河西学院土木工程学院 [2]河西走廊水资源保护利用研究所,甘肃张掖734000 [3]甘肃省临洮县水务局,甘肃定西730500

出　　处：《河西学院学报》2017年第5期26-29,共4页Journal of Hexi University

基　　金：河西学院青年教师科研基金项目(项目编号:QN2016010)

摘　　要：文章概述了泵送混凝土的发展趋势及前景,论述了在混凝土拌合物中,加大粉煤灰取代水泥用量并采取"补钙"措施的粉煤灰水化机理.结合工程实际中出现的混凝土可泵性问题,从材料方面论述了材料选用对泵送"补钙"粉煤灰混凝土可泵性的影响.文章针对不同情况,提出相应的材料措施,以提高"补钙"粉煤灰混凝土的可泵性.The paper summarizes the development trend and prospects of the pumping concrete, and discusses the hydration mechanism of fly ash by increasing dosage of fly ash replacing cement and CaO in the concrete mixture. Combining with engineering practice problems on concrete pumpability, this paper discusses how the material chooses influence pumpability of fly ash concrete with a Certain Content of CaO. According to different situations, the author puts forward corresponding material measures to improve the pumpability of fly ash con- crete with a Certain Content of CaO.

关 键 词：粉煤灰混凝土 泵送混凝土 可泵性 流动性 

分 类 号：TU528.2[建筑科学—建筑技术科学]