Consolidation Characteristics of Fiber Reinforced Cohesive Soil

Electronic journal of geotechnical engineering

Pradip Kumar Pradhan³  Ashutosh Naik¹  Rabindra Kumar Kar*² 

[1] Professor, Department of Earth Science, Sambalpur University, Jyotivihar, Burla-768019, Odisha, India;Asst. Professor, Department of Civil Engineering, Indira Gandhi Institute of Technology, Sarang - 759146, Odisha, India*Corresponding Author,;Professor, Department of Civil Engineering, Veer Surendra Sai University of Technology, Burla-768018, Odisha, India

关键词: Aspect ratio;    polypropylene fibers;    coir fibers;    consolidation test;    void ratio;    compression index;   

DOI  :  

来源: Oklahoma State University

【 摘 要 】

Claysoilsandtheirrelatedabnormalbehaviorsuchasexcessiveshrinkage,swelling,consolidationsettlementandcrackingondryinghasbeenthesubjectofmanyinvestigations.Inrecentyears,anincreasingneedisbeingfeltforvarioustypesofconstructionsinmarginal,loworreclaimedlandsandcoastalareaswhicharenotsuitablenormallyforconstructionpurposes.Clays,wellknownforitshighcompressibilityandpoorshearstrength,posenumerousproblemstobuilders.Previousstudiesmainlyevaluatedtheeffectsofadditivessuchaslime,cementandsandonthesecharacteristicsofclays.Initialresultsindicatedthatthesoilcharacteristicswereimproved.However,reportedlyinmanycases,theseadditivesresultedinadecreaseinplasticityandincreaseinhydraulicconductivity.Asaresult,therehasbeenagrowinginterestinsoil/fiberreinforcement.Thepresentinvestigationhasfocusedontheimpactofshortrandomfiberinclusiononconsolidationsettlementincompactedclays.Toexaminethepossibleimprovementsintheconsolidationcharacteristics,localclayeysoilwasreinforcedwithrandomdistributionofpolypropylene(synthetic)andcoir(natural)fibersaspercentage(0-1%atanincrementof0.2%)ofdryweightofsoilwith10,15and20mmlengths.Resultsindicatedthatthecompressionindexandcoefficientofvolumechangedecreasewithinclusionofpolypropylene/coirfibersinthesoiluptocertainfibercontentandincreasethereafter.Thecoefficientofconsolidationincreaseswithincreaseinfibercontentandfiberlengthintherangeoffibersconsideredintheinvestigation.Thus,thetimerequiredtoachieveprimaryconsolidationdecreasesforfiber-reinforcedsoilforagivendegreeofconsolidationandagivendrainagepath.

【 授权许可】

Unknown