随着砼技术的发展，高强已不再是砼的首要指标，而越来越多地强调力学性能、耐久性以及经济性的统一。本文作者着重介绍应用粉煤灰砼的历史、现状以及发展趋势，探讨大掺量粉煤灰高性能砼的社会经济意义、性能、应用前景以及存在的问题。
　　关键词　粉煤灰砼　绿色材料　活性效应　后期强度

APPLICATION OF PFA HIGH PERFORMANCE CONCRETE
OF HIGH REPLACEMENT LEVELS

Chen Yu Zhou Shiqiong
(Civil and Architecture Institute，Chang Sha Railway University，Changsha 410075)

Abstract:With the development of concrete technology，high strength is no longer the first important target of high performance concrete and emphasis is more and more put on the unity of mechanical properties，durability and economic benefits of concrete.In this paper，the authors introduced the history，current situation and development trend of the application of PFA concrete，meanwhile analyzed the social and economic significance，properties，application prospect as well as some existing problems of PFA high performance concrete of high replacement levels.
Keywords: PFA high performance concrete，green material，active effect，later-stage strength