高温对含氧化铁精矿的水泥砂浆性能的影响
摘要
来制造材料和产品。水泥混凝土和砂浆作为基础建筑材料,为可回收或废弃材料的利用提供了广阔的前景。铁矿石
加工产生的废物是精矿富集过程中产生的固体废物。本文介绍了三种砂浆的测试结果,其中一部分细骨料被这种工
艺产生的氧化铁精矿(IOC)取代。IOC已被用作细骨料的 10%、20%和 30%(按质量计)的替代品。本文还研究了
浓缩物对高温(高达 600℃)下砂浆机械性能的影响。IOC是一种中性材料,不会对水泥水化过程产生化学影响。添
加 IOC会略微提高水泥砂浆的强度(提高 5%至 10%)。在添加量较大(20-30%)的情况下,必须使用减水剂。IOC
显着提高了水泥砂浆的耐高温性(300℃),加入 30%的 IOC的水泥砂浆在 450℃的温度下保持 80%的初始抗弯和抗压
强度。
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DOI: http://dx.doi.org/10.12361/2661-3565-03-12-101022
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