高炉矿渣基流态固化土工程性能分析

Analysis of Engineering Properties of Fluidized Cemented Soil Based on Blast Furnace Slag

通过高炉矿渣基固化施工现场的弃土,制备流态固化土,以满足狭窄区域回填的需要。为改善流态固化土的力学性能,探究了高炉矿渣与水泥之间的掺配比。并进一步分析同一固化剂掺量下,不同水固比对流态固化土的流值、泌水率、强度的影响。流值随水固比的增大而显著增大。泌水率均满足材料性能要求,且给出泌水率与流值的关系。强度随着水固比的增大先增大后减小,当水固比0.48,强度最佳。Flowable solidified soil was prepared from the discarded soil at the construction site of a blast furnace slag-based solidification to meet the needs of backfilling in narrow areas. To improve the mechanical properties of the flowable solidified soil, the blend ratio between blast furnace slag and cement was explored. Furthermore, the effects of different water-to-solid ratios on the flow value, permeability rate, and strength of the flowable solidified soil under the same amount of solidifying agent were analyzed. The flow value significantly increased with the increase of the water-to-solid ratio. The permeability rates all met the material performance requirements, and the relationship between permeability rate and flow value was given. The strength first increased and then decreased with the increase of the water-to-solid ratio, and when the water-to-solid ratio was 0.48, the strength was optimal.