| 周纪平,张立力,华苏东,邵琳琳,施 娟,杨雨轩.高性能镍渣基胶凝材料固化滨海盐渍土力学性能评价*[J].水泥工程,2018,31(4):11-14 |
| 高性能镍渣基胶凝材料固化滨海盐渍土力学性能评价* |
| Evaluation of mechanical properties of solidified coastal saline soil with high performance nickel slag cementitious material |
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| DOI： |
| 中文关键词: 镍渣 盐渍土 胶凝材料 无侧限抗压强度 |
| 英文关键词: nickel slag saline soil cementitious material unconfined compressive strength |
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| 中文摘要: |
| 镍渣利用率较低，露天堆放对土壤、水体和大气造成严重污染。盐渍淤泥土含盐量和含水率较高，很难固化处治。通过对固化材料力学性能进行评价，研究了镍渣目数、活化材料掺量和固化材料掺量等对镍渣基胶凝材料固化盐渍土效果的影响，并通过微观结构分析了固化作用机理。结果表明：固化材料配方为镍渣∶矿渣∶活化剂=5∶4∶1时，其中镍渣达到800目，固化体力学性能最佳；综合考虑经济性因素，选用20%掺量的固化材料固化滨海盐渍土较为适宜，固化土28 d无侧限抗压强度达3.8 MPa。 |
| 英文摘要: |
| The utilization rate of nickel slag is low, and most manufacturers mainly adopt open-air stacking, which causes serious pollution to soil and water vapor. Salted silt soil has high salt content and water content, and traditional materials such as cement and lime are difficult to cure saline soil. This paper develops a new type of nickel slag-based cementitious material to cure coastal saline soil to waste treatment. By evaluating the mechanical properties of the cured materials, the effects of the number of nickel slags, the amount of activated materials and the amount of solidified materials on the solidification of saline soil by nickel slag-based cementitious materials were studied, and the mechanism of solidification was analyzed by microstructure. The research results show that the formulation of the solidified material is nickel slag∶ slag∶activator = 5∶4∶1, wherein the nickel slag reaches 800 mesh, and the mechanical properties of the solidified body are the best; considering the economic factors, the curing with 20% of the content is selected. It is more suitable for the material to cure the coastal saline soil. The 28 day unconfined compressive strength of the solidified soil is 3.8 MPa. |
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