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1、第34卷第4期土木工程與管理學報Vol.34No.42017年7月JournalofCivilEngineeringandManagementJuly2017濱海氯鹽鹽漬土加固工程特性張真怡?羅陽楚君?裴向軍(成都理工大學環(huán)境與土木工程學院?四川成都610059)摘要:鹽漬土廣泛分布于我國東部沿海地區(qū)?在工程建設中常出現(xiàn)溶陷、鹽脹及腐蝕性等病害?對工程建設造成了極大地危害?試驗采用成都理工大學自主研制新型抗鹽脹固化材料SD作為固化劑對人工配置氯鹽鹽漬土進行室內(nèi)試驗?研究固化劑對氯鹽鹽漬土工程特性的影響?試驗表明?抗鹽脹固化劑可有效提高氯鹽鹽漬土強度?降低鹽漬土膨脹性?固
2、化劑摻量為2.5%?5%的試樣28d抗壓強度相較于純水泥試樣分別增加56.72%?95.52%?抗折強度分別增加48.11%?52.53%?添加了固化劑試樣線膨脹量約為純水泥加固試樣的的0.2倍?該固化劑有效提高了工程質(zhì)量?延長其使用壽命?大大提高了工程經(jīng)濟效益?抗鹽脹固化劑主要是通過抑制鹽漬土中的鹽離子與鋁酸鈣的反應即抑制Friedel鹽和鈣礬石的生成來達到固化氯鹽鹽漬土的目的?關(guān)鍵詞:氯鹽鹽漬土?抗鹽脹固化劑?工程特性?固化機理中圖分類號:TU472.5文獻標識碼:A文章編號:2095 ̄0985(2017)04 ̄0059 ̄05EngineeringCharacter
3、isticofReinforcementChlorineSalineSoilinCoastalZHANGZhen ̄yi?LUOYang ̄chu ̄jun?PEIXiang ̄jun(CollegeofEnvironmentandCivilEngineering?ChengduUniversityofTechnology?Chengdu610059?China)Abstract:SalinesoiliswidelydistributedintheeasterncoastalareasinChina?anddissolvingdepression?expensionsaltan
4、dcorrosiveandotherdiseaseswhichoftenappearinengineeringconstruction?causedtheharmgreatlyonconstructionengineering.LaboratoryexperimentofartificialpreparationofchlorinesalinesoilwascarriedwithresistancetosaltexpansioncuringagentwhichindependentlydevelopedbyChengduUniversityofTechnology.Th
5、eeffectsofthecuringagentchlorinesalinesoilengineeringpropertiesisanalyzed?andthecuringagentforcuringmechanismofchlorinesalinesoilisresearched.Theexperimentshows?resistancetosaltexpansioncuringagentcaneffectivelyimprovethestrengthofchlorinesalinesoil?andlowerdilatabilityofsalinesoil.Curin
6、gagentcontentis2.5%?5%ofthesampleof28dcompressivestrengththanthepurecementspecimensrespectivelyincreasedby56.72%?95.52%?theflexuralstrengthwereincreasedby48.11%?52.53%?Addtheamountofcuringagentsamplelinearexpansionisabout0.2timesofpurecementsample.Thecuringagenteffectivelyimprovestheengi
7、neeringqualityandprolongitsservicelife?greatlyimprovingtheeconomicbenefitsoftheproject.Saltexpansioncuringagentsbyinhibitingthereactionofsaitionsinsalinesoilandcalciumaluminate?namelysuppressionthegenerationofFriedelandettringitetoachievepurposesofcuringchlorinesoil.Keywo