铁尾矿粉对C40混凝土性能的影响  

Effect of Iron Tailings Powder on Properties of C40 Concrete

作　　者：张肖艳[1] 宋强[1] 李辉[1] 樊晓丹[1] 

机构地区：[1]西安建筑科技大学材料与矿资学院,西安710055

出　　处：《硅酸盐通报》2013年第12期2559-2563,共5页Bulletin of the Chinese Ceramic Society

基　　金：国家重点基础研究发展(973)计划(2012CB723302);陕西省自然科学基金(2012JM6006)

摘　　要：随着选矿工艺的精进,铁尾矿排出的粒度越来越细。本文通过系统的试验,重点研究铁尾矿粉作为惰性掺合料对混凝土的力学性能、抗冻性能和抗渗性能的影响。研究结果表明:对于铁尾矿粉掺量为23%的混凝土,强度发展较快,相对于基准混凝土,28 d强度增长了29%;铁尾矿粉的掺入对混凝土的抗冻性能和抗渗性能均有不同程度的改善。With the improvement of the mineral processing technology, more and more fine-grained iron tailings exhausted. Through systematical experiments, the mechanical properties, frost resistance and impermeability of concretes with iron tailings powder, were investigated in more detail. The results show that, for the concretes with 23 % iron tailings powder, the strength increases so rapidly and the strength in 28 d increased by 29% compared with normal concrete. And the frost resistance and impermeability of concrete with iron tailings powder have different degrees of improvement.

关 键 词：铁尾矿粉 混凝土 力学性能 抗冻性能 抗渗性能 

分 类 号：TU528[建筑科学—建筑技术科学]