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碱活性石粉对活性粉末混凝土强度和微结构的影响 被引量:1

Effect of Alkali Activated Stone Powder on the Strength and Micro-structure of Reactive Powder Concrete
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摘要 采用碱活性石粉部分取代水泥制备活性粉末混凝土(RPC),研究碱活性石粉掺量和水胶比对RPC抗压强度和微结构的影响。研究结果表明:RPC的抗压强度随着碱活性石粉掺量的增加呈先增大后减小的趋势。具有足够细度的碱活性石粉在胶凝体系中发挥了较强的火山灰活性和填充效应,碱活性石粉中的无定形二氧化硅和氧化铝可参与二次水化,生成较为稳定的水化硅酸钙等水化产物,改善基体的微结构,提高RPC的抗压强度。
出处 《混凝土世界》 2018年第8期66-69,共4页 China Concrete
基金 中央高校基本科研业务费专项资金资助项目(2042018gf0040)
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