大掺量粉煤灰混凝土抗渗抗冻耐久性研究  

Research on frost-resistance and anti-permeability durability of high volume fly ash concrete

作　　者：王鹏 杜应吉 

机构地区：[1]西北农林科技大学水利与建筑工程学院,陕西咸阳712100

出　　处：《混凝土》2011年第12期76-78,共3页Concrete

基　　金：国家"十一五"科技支撑计划重点项目(2006BAD11B03)

摘　　要：大掺量粉煤灰混凝土作为一种经济的绿色高性能混凝土,在工程建设中逐步得到广泛应用。混凝土的抗渗,抗冻性能是评价混凝土结构耐久性的重要指标。结合实际工程,研究了大掺量粉煤灰混凝土的抗渗及抗冻性能,对其作用机理进行了分析,试验结果表明:当粉煤灰掺量为60%时,大掺量粉煤灰混凝土的抗渗及抗冻性能最好;随着粉煤灰掺量的增加,混凝土的抗压强度早期下降幅度较大,后期强度增长较快;在工程建设中大量的应用粉煤灰混凝土仍可满足实际工程需要,降低工程造价,节约资源。High volume fly ash concrete as a green economic performance concrete, step by step in project construction is widely used.Concrete impermeability and frost resistance are important indicators to evaluate the durability of concrete structures.Combined with the actual channel project, studies of the high fly ash act on the properties of concrete permeability freeze and analyzes its mechanism of action, results showed that： When the fly ash 60%, Impermeability and antifreeze of high volume fly ash concrete are the best;With the increase of fly ash,the compressive strength of concrete than the early declines large,rapid growth in the late strength;a large number of applications of fly ash concrete in project construction can meet the engineering needs, reduce project cost and save resource.

关 键 词：大掺量粉煤灰 抗渗 抗冻 抗压强度 

分 类 号：TU528.041[建筑科学—建筑技术科学]