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掺入粉煤灰的混凝土作为新型的复合建筑材料,其具有节约水泥、水化热低、绿色环保等优点,同时具有早期抗压强度低等缺点,而与普通混凝土相比,无砂混凝土没有细骨料(即只用粗骨料),此外水泥用以覆盖粗骨料的表面,起胶结作用,而非填充空隙,因此混凝土强度要比普通混凝土低,那么掺入粉煤灰的无砂混凝土强度会不会也降低呢?鉴于此,本文主要围绕高掺量粉煤灰无砂混凝土的抗压强度展开论述,以期实现此类复合建筑材料应用效果的提高。
As a new type of composite building material, fly ash concrete has the advantages of saving cement, low heat of hydration and environmental protection, and has the advantages of low early compressive strength. Compared with ordinary concrete, there is no concrete without sand Fine aggregate (ie, only coarse aggregate), in addition to the cement to cover the surface of coarse aggregate, cementing effect, rather than filling voids, so the concrete strength is lower than ordinary concrete, then mixed with fly ash without sand In view of this, this article mainly discusses the compressive strength of non-sand concrete with high content of fly ash, in order to improve the application effect of such composite building materials.