水利工程大掺量粉煤灰混凝土实践分析  

Practical Analysis of Large Amount of Fly Ash Concrete in Water Conservancy Projects

作　　者：夏侯唐鹏 张金海 魏东风 XIAHOU Tang-peng;ZHANG Jin-hai;WEI Dong-feng(Sinohydro Bureau 11 Co.Ltd.,Zhengzhou 450000,China)

机构地区：[1]中国水利水电第十一工程局有限公司,郑州450000

出　　处：《工程建设与设计》2022年第18期127-129,共3页Construction & Design for Engineering

摘　　要：引入水利工程实践案例,阐述掺入粉煤灰的优势及局限性,明确确定掺量的难点,在此基础上进行配比试验,探究粉煤灰掺量对混凝土力学性能、抗冻性能以及抗渗性能的影响。结果发现:当粉煤灰掺量≤65%,且水灰比≥0.40时,构件的粉煤灰掺量、抗压强度之间存在一定的相关性,且能够间接影响结构的抗冻融性和抗渗性能,工程实践中可以通过科学设定大掺量配比达到优化性能的目的。This paper introduces the practical cases of water conservancy projects,expounds the technical advantages and limitations of fly ash mixing,and clarifies the technical difficulties in determining the mixing ratio.On this basis,it designs the mixing ratio test to explore the influence of fly ash mixing on concrete mechanical properties,frost resistance and impermeability under the same conditions.It is found that when the content of fly ash is≤65%and w/b is≥0.40,there is a certain correlation between the content of fly ash and the compressive strength of components,and it can indirectly affect the frost resistance and water seepage resistance of the structure.In engineering practice,the purpose of optimizing the performance can be achieved by scientifically setting a large content ratio.

关 键 词：水利工程 混凝土施工 大掺量粉煤灰 配比控制 

分 类 号：TU528[建筑科学—建筑技术科学]