用锦屏瘠性磷矿渣生产建材的试验研究

发布时间：2018-03-13 07:19

本文选题：磷矿渣　切入点：砂浆　出处：《矿业研究与开发》2015年12期 　论文类型：期刊论文

【摘要】：锦屏磷矿现有矿渣2300万m~3,堆放在尾矿库占用土地、污染环境。利用瘠性磷矿渣生产建设材料,既能消耗磷矿渣,又能节约砂石资源。为助推锦屏瘠性磷矿渣资源化利用,测试了锦屏磷矿渣的基本性能,并对其生产砂浆和低强度混凝土进行了试验研究。研究发现:锦屏磷矿渣放射性符合建材标准,无毒无害,可以用于生产建设材料,其主要化学成分为氧化钙、氧化镁和氧化硅,主要矿物为存在解理的白云石、方解石、白云母,宜作为瘠性填料用于建设材料生产。锦屏瘠性磷矿渣砂浆强度可达20 MPa以上,并给出了强度计算经验式和常用配方设计配比。适宜掺量的瘠性磷矿渣可将混凝土的强度提高10%,同时提高强度均匀性,锦屏瘠性磷矿渣混凝土可用于填充墙、柔性桩、防渗墙和路基。
[Abstract]:The existing slag of Jinping Phosphate Mine is 23 million mm3, which occupies the land and pollutes the environment. The utilization of barren phosphate rock slag to produce construction materials can not only consume phosphate slag, but also save sand and stone resources, so as to promote the utilization of Jinping barren phosphate ore slag. The basic properties of Jinping phosphate ore slag were tested, and the production of mortar and low strength concrete were studied. The results showed that the radioactive content of Jinping phosphate rock slag was in accordance with the building materials standard, non-toxic and harmless, and could be used in the production of construction materials. The main chemical components are calcium oxide, magnesium oxide and silicon oxide, and the main minerals are dolomite, calcite and Muscovite, which can be used as barren fillers for construction material production. The empirical formula of strength calculation and the design ratio of common formula are given. The strength of concrete can be increased by 10% and the uniformity of strength can be improved by suitable addition of barren phosphate slag. The concrete of Jinping barren phosphate slag can be used for filling walls and flexible piles. Cutoff walls and subgrade.
【作者单位】：淮海工学院土木工程学院;江苏省海洋资源开发研究院;连云港市城乡建设局;连云港市墙体材料改革办公室;中交广州航道局有限公司;
【基金】：住房和城乡建设部科学技术计划项目(2015-K6-001) 江苏省建设系统科技项目(2014D078) 淮海工学院创新基金项目(Z2014011)
【分类号】：TU50;X754

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