典型文献
Stabilization of expansive soils using chemical additives:A review
文献摘要：
Volume instability of expansive soils due to moisture fluctuations is often disastrous,causing severe damages and distortions in the supported structures.It is,therefore,necessary to adequately improve the performance of such soils that they can favorably fulfil the post-construction stability requirements.This can be achieved through chemical stabilization using additives such as lime,cement and fly ash.In this paper,suitability of such additives under various conditions and their mechanisms are reviewed in detail.It is observed that the stabilization process primarily involves hydration,cation exchange,flocculation and pozzolanic reactions.The degree of stabilization is controlled by several factors such as additive type,additive content,soil type,soil mineralogy,curing period,curing temperature,delay in compaction,pH of soil matrix,and molding water content,including presence of nano-silica,organic matter and sulfate compounds.Provision of nano-silica not only improves soil packing but also accelerates the pozzolanic reaction.However,presence of deleterious compounds such as sulfate or organic matter can turn the treated soils unfavorable at times even worser than the unstabilized ones.
文献关键词：
中图分类号：
作者姓名：
Dharmendra Barman;Sujit Kumar Dash
作者机构：
Department of Civil Engineering,Indian Institute of Technology Kharagpur,Kharagpur,721302,India
文献出处：
引用格式：
[1]Dharmendra Barman;Sujit Kumar Dash-.Stabilization of expansive soils using chemical additives:A review)[J].岩石力学与岩土工程学报（英文版）,2022(04):1319-1342
A类：
Provision,worser,unstabilized
B类：
Stabilization,expansive,soils,chemical,additives,Volume,instability,due,moisture,fluctuations,often,disastrous,causing,severe,damages,distortions,supported,structures,It,therefore,necessary,adequately,performance,such,that,they,can,favorably,fulfil,post,construction,requirements,This,be,achieved,through,stabilization,lime,cement,fly,ash,In,this,paper,suitability,under,various,conditions,their,mechanisms,are,reviewed,detail,observed,process,primarily,involves,hydration,cation,exchange,flocculation,pozzolanic,reactions,degree,controlled,by,several,factors,type,content,mineralogy,curing,period,temperature,delay,compaction,matrix,molding,water,including,presence,nano,silica,organic,matter,sulfate,compounds,not,only,improves,packing,but,also,accelerates,However,deleterious,turn,treated,unfavorable,times,even,than,ones
AB值：
0.62293
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