提高混凝土强度,尤其是早期强度,且不影响混凝土的后期效果和耐久性能,是国内外工程界普遍关注的问题。目前,国内为提高混凝土构件早期强度采取的手段主要是:掺加高效减水剂和早强剂、蒸汽养护、提高单方混凝土水泥用量等。其后果是大大提高了混凝土单方合碱量,增大了混凝土发生碱骨料反应破坏的危险,对构件耐久性能很不利。 为满足工程需要,北京市市政工程研究院与有关单位联合开发了铁铝酸盐水泥早强混凝土应 Increasing the strength of concrete, especially its early strength, without affecting the post-construction effect and durability of concrete, is a common concern in engineering circles at home and abroad. At present, the main measures taken to improve the early strength of concrete components are: adding high-efficiency water-reducing agent and early strength agent, steam curing, and increasing the amount of uni-concrete cement. The consequence of this is that the amount of mono-alkali in the concrete is greatly increased, the risk of alkali-aggregate reaction and destruction of the concrete increases, and the durability of the components is very unfavorable. In order to meet the needs of the project, the Beijing Municipal Institute of Municipal Engineering and related units jointly developed early strength concrete for ferroaluminate cement.