铁尾矿砂的特性及对混凝土拌和物性能的影响

按照建筑用砂的标准,分别用铁尾矿砂和天然砂配制了混凝土,并对比了新拌混凝土的和易性。试验研究和实际应用证明,铁尾矿砂符合建筑用砂的各项指标要求;使用单一品种的铁尾矿砂时,其所配制的混凝土的和易性不如天然砂拌制的混凝土好;用经过调配后的铁尾矿砂拌制的混凝土,其和易性与天然砂拌制的混凝土基本一致。提出了在混凝土中使用铁尾矿砂的具体方法和应采取的技术措施。

Characteristic of Iron Ore Tail and the Affects on Concrete Mixing Content

According to the construction of sand, a standard of iron ore and natural sand tail, compared with the concrete mixing concrete and performance. Test and actual application, with the architectural sand sand tail index requirements, Use a single variety of ore, which makes the concrete workability than natural sand mixing concrete, Through the deployment of tail with sand mixing concrete, its workability and natural sand mixing concrete are basically the same. Put forward concrete used in the specific methods and tail ore technical measures should be taken.