高寒地区高性能混凝土试验研究

粉煤灰混凝土因能减少环境污染、节约能源、降低混凝土成本、改善混凝土施工性能、力学性能而越来越被重视。采用一级粉煤灰，掺加高效缓凝保塑减水剂配制混凝土，在改变粉煤灰掺量（0，20％，30％，40％，50％）、水泥和粉煤灰总用量的条件下进行粉煤灰混凝土绝热升温、水泥水化热、冻融循环、抗渗和干缩性能等试验，对大掺量粉煤灰混凝土在高寒地区的应用进行研究，找出适合高寒地区使用的大掺量粉煤灰混凝土的配比参数。

EXPERIMENTAL STUDY OF HIGH-PERFORMANCE CONCRETE IN FROSTY AREA

With the extensive use of fly ash concrete, to reduce its environmental pollution, conserve energy and reduce the cost of concrete, people were more and more paying attention to improve concrete Construction performance and mechanical properties. It using a fly ash and concrete which adding slow setting-efficient plastic water reducer, experiments with changes in fly ash （0, 20%, 30% and 40%, 50% ） , the total amount of fly ash and cement. Through insulation and warming of fly ash concrete test, hydration heat of doped cement test, freeze-thaw cycle test of fly ash concrete test, impermeability of concrete test and shrinkage of concrete test, study the application of large volume fly ash concrete in alpine region and find Large proportion of fly ash concrete parameters that suitable for alpine areas.