摘要
锂、钢渣是工业废渣,但其化学成分和物理性质均符合混凝土掺合料的特性,对改善混凝土的抗压强度和劈裂抗拉强度有利,而且价格低廉,可降低工程成本。文章中对锂、钢渣高性能混凝土的强度进行了较系统的正交试验研究。试验结果表明:(1)锂、钢渣是影响高性能混凝凝土早强的主要因素,锂渣掺量以10%(前期)和30%(后期)为最优;水胶比则是影响锂、钢渣高性能混凝凝土后期抗压强度的主要因素。(2)磨细钢渣粉对混凝土的充填作用优良,对混凝土早期抗压强度作用显著,钢渣掺量以20%为最优。(3)水胶比对28 d劈裂抗拉强度影响显著。此外,通过试验还得出了不同强度的最优配合比。
Lithium, steel slag is a industrial waste, but its chemical composition and physical properties are in line with the characteristics of concrete admixture, the compressive strength of concrete and improve the splitting tensile strength is good, and the price is low, can reduce the cost of the project. The strength of high performance concrete, the lithium slag were studied by orthogonal test studied. The test results show that： （ 1 ） lithium slag is of high performance concrete, influence factors of concrete early strength of the concrete, the dosages of lithium slag in 10% （ early stage） and 30% （ late stage） for optimal; water cement ratio is, the main factors effect of lithium slag high performance concrete compressive strength of concrete. （2） the filling effect of steel slag powder on concrete quality, significant on early compressive strength of concrete, steel slag to 20% for the best. （3） the water cement ratio on the 28 d splitting tensile strength significantly affected. In addition, the test also shows the optimal proportion of different intensity.
出处
《硅酸盐通报》
CAS
CSCD
北大核心
2013年第12期2427-2434,共8页
Bulletin of the Chinese Ceramic Society
基金
国家自然科学基金资助项目(51309262)
重庆市教委科学技术研究项目(KJ121104)
重庆三峡学院重点项目(12ZD20)
关键词
锂渣
钢渣
混凝土
强度
lithium slag
steel slag
concrete
strength
