摘要
就单掺粉煤灰、单掺矿渣微粉,以及复掺粉煤灰与矿渣微粉对混凝土抗压强度和氯离子渗透性能的影响进行了试验研究。结果表明,粉煤灰和矿渣微粉明显降低了混凝土的早期抗压强度,但后期强度发展良好,而两者复掺更有利于后期强度的增长;粉煤灰和矿渣微粉都不同程度的降低了混凝土的氯离子扩散系数,随着龄期的延长,矿物掺合料提高混凝土抗氯离子渗透性能的能力越显著。
The infulence on compressive strength and CI- Permeability of concrete by adding fly-ash and slag Micro powder, either alonely of them or together with them, is experimentally studied. The rezults show that the early compressive strength of concrete is obviously lowered by adding fly ash and slag, but the development of later strength is very good, especially for adding with fly ash and slag together, and there is more benefit to development of strength at later age. Meanwhile, the CI- diffusion coefficients of concrete are also lowered to different degvee by adding fly ash or slag, and with the time passed on the impermeability of concrete is more and more obviously increased by adding mineral admixture.
出处
《混凝土与水泥制品》
2005年第4期11-13,共3页
China Concrete and Cement Products
