高钙粉煤灰加固软土地基性能研究

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中图分类号：TU472.36 文献标志码：A 文章编号：1005-8249（2025）04-0080-05

DOI：10.19860/j.cnki.issn1005-8249.2025.04.015

WU Qiang 1.2

（1. Henan University of Technology， Zhengzhou 45OOO1，China; 2.Henan Institute of Industrial Design，Co.，Ltd.， Zhengzhou 450OO1，China）

Abstract：Tooptimizetheperformanceofsoftsoilfoundation，exploretheinfluenceofdiffrenthighcalciumflyashcontenton the performanceof soft soilfoundation.Using highcalciumflyash，cement，softsoil andotherrawmaterials，prepare samples withdiffrentamountsof highcalciumflyashaccording tothesetratio.Byobservingtheapparentstructureof thesample throughascanning microscope and conducting strength，deformation，and permeabilitytests using a pressre testing machine， theinfluenceof high calcium flyashcontentontheperformanceof thesample isexplored.Theresultsshow thatunder established geological conditions，when the content of high calcium fly ash is 40% ，the soil structure is most compact，with a peak compressvestrengthof42.33 MPaandan optimal shear strengthof105.45 MPa.Thecompresive modulusiste highest， thecompressiondeformationandcompressioncoeffientarethelowest，andthepermeabilitycoeffientisthelowestatawater head difference of 4O cm，reaching 0.25×10-6 cm/s. Therefore，in actual soft soil foundation reinforcement projects，the high calcium fly ash content can be set at 40% as a reference to achieve better reinforcement effects.

Keywords：softsoil foundation；highcalciumflyash；foundationreinforcement；compressivestrength；shear strength; permeability

0 引言

软土含水量高、孔隙比大等特性，使地基在上部荷载下易产生过大不均匀沉降，影响建筑物稳定、安全及正常使用，甚至引发事故，威胁生命财产安全[1-2]。（剩余4421字）