摘要
研究了以菱镁尾矿取代部分细集料和水泥配制混凝土后其强度及耐久性变化,同时还研究了混凝土抗氯离子扩散性能。试验结果表明:菱镁尾矿取代细集料的体积取代率小于15%时,混凝土强度下降小于5%,抗冻性和氯离子扩散系数无明显变化。菱镁尾矿取代水泥配制混凝土,其强度及耐久性能显著降低。
The properties of durability and strength of concrete which using magnesia tailings partialy in place of fine aggregate and cement were studied.The test rusults showed that when the volume fraction of magnesia tailings was less than 15%, the compressive strength and rupture strength of the concrete droped less than 5% and the anti-freezing property and chloride diffusion coefficient do not change clearly,that indicate the durability of the concrete did not reduce obviously.When using magnesia tailings partialy in place of cement in concrete, the strength and durability of the concrete reduced sharply.
出处
《混凝土》
CAS
CSCD
北大核心
2012年第11期54-56,共3页
Concrete
关键词
菱镁尾矿
混凝土
耐久性
氯离子扩散系数
magnesia railings
concrete
durability
chloride diffusion coefficient
