【摘要】 试验研究表明,以粉煤灰作为主要混合材的复合水泥配制的混凝土,改善了粉煤灰直接掺入混凝土中导致混凝土早期强度低的缺点,混凝土后期强度的发展受粉煤灰品质的影响较大。粉煤灰掺入复合水泥和混凝土中,都可以明显改善混凝土的耐久性能,但粉煤灰用作水泥混合材,对混凝土的耐久性能的改善优于用作混凝土矿物掺合料。用粉煤灰作为主要混合材的高性能复合水泥来配制混凝土,是改善混凝土综合性能的非常有效的方法。更多还原

【Abstract】 The research shows that compared with the properties of fly ash concrete,fly ash composite portland cement concrete have good 3d and 28d strength.Long age strength of concrete is related to the quality of fly ash.Durability of concrete may be improved when fly ash is mixed with cement or concrete,but it is found that durability of concrete is better when fly ash is put into cement.更多还原