【摘要】 评述混凝土掺粉煤灰的意义及应用，特别是对国内几个工程掺用粉煤灰受益情况进行了分析，并通过对标准立方体试件劈裂，研究了愈合期、混凝土龄期及二次愈合对混凝土裂缝愈合能力的影响，根据有关资料及粉煤灰作用机理对上述结果进行了分析，并向实际工程提出了几点建议。更多还原

【Abstract】 The paper commented on the significance and application of fly ash dam concrete,especially,analyzed its efficiency in a few projects in China.To simulate concrete crack in dam,split standard cube samples,selected different amounts of fly ash concrete to test and studied the influence of healing period,age and rehealing on the crack heal capacity. According as date and information reaction process,the paper analyzed testing results and also made some suggestions for the concrtet construction.更多还原