微生物诱导碳酸钙沉积(MICP)技术对膨胀土性能改良研究OA
Research on Microbially Induced Calcium Carbonate Precipitation(MICP)Technology for Improving the Performance of Expansive Soils
通过试验分析不同养护时间下微生物诱导碳酸钙沉积技术改良土的膨胀特性,表明微生物对膨胀土进行固化改良后,其自由膨胀率在养护1、3、7、15、30 d后与重塑膨胀土样相比,分别减小了 10.0％、13％、15.8％、20.4％、20.6％;微生物改良膨胀土的自由膨胀率随着养护时间的提高持续减弱,在养护前15 d内快速减小,15 d后趋于稳定;随着膨胀土自身膨胀特性的增强,微生物对其改良效果越显著;微生物固化作用能够明显削弱膨胀土的浸水膨胀率.
The expansion characteristics of soil improved by microbially induced calcium carbonate deposition under different curing time were analyzed.The results showed that the free expansion rate of soil improved by microbially cured expanded soil decreased by 10.0％,13％,15.8％,20.4％and 20.6％,respectively,after curing for 1,3,7,15 and 30 d,compared with the remodeled expanded soil sample.The free expansion rate of microbial modified expansive soil continued to weaken…查看全部>>
沈超杰;沈萍
苏州农业职业技术学院,江苏 苏州 215008苏州农业职业技术学院,江苏 苏州 215008
土木建筑
微生物诱导碳酸钙沉积技术膨胀土自由膨胀率微生物固化作用
Microbial induced calcium carbonate deposition technologyExpansive soilFree expansion rateMicrobial solidification
《江西建材》 2023 (10)
54-56,3
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