■建筑材料福建建设科技2023No451掺膨润土的低弹性模量水泥浆流动性能研究王振华(健研检测集团有限公司福建厦门361000)[摘要]主要研究掺入膨润土的低弹性模量水泥浆的流变性能ꎬ通过对萘系减水剂进行梯度实验发现在超掺的情况下才能保证低弹性模量水泥浆达到与普通水泥浆相同的流动度ꎬ此时低弹性模量水泥浆的其他性能(如泌水等)受到负面影响ꎮ通过加入氯化钾、尿素、柠檬酸、聚乙二醇等抗泥吸附材料在膨润土表面形成竞争吸附来降低萘系减水剂掺量ꎬ结果表明ꎬ抗泥吸附材料的加入可以增大水泥浆流动度ꎬ同时也提高流动度经时损失(1h)ꎬ满足塑性混凝土施工要求ꎮ[关键词]低弹性模量ꎻ流动度ꎻ水泥浆ꎻ抗泥吸附剂AnalysisonFlowPropertiesofLowElasticModulusCementSlurrymixedWithBentoniteAbstract:Thisarticlemainlystudiestherheologicalpropertiesoflowelasticmoduluscementslurrymixedwithbentonite.Throughgradientexperimentsonnaphthaleneserieswaterreducingagentsꎬitwasfoundthatonlyinthecaseofexcessiveadditionꎬthelowelasticmoduluscementslurrycanachievethesamefluidityasordinarycementslurry.Atthistimeꎬotherpropertiesoflowelasticmoduluscementslurry(suchasbleeding)arenegativelyaffected.Thereforeꎬbyaddingantimudadsorptionmaterialssuchaspotassiumchlorideꎬureaꎬcitricacidꎬandpolyethyleneglycoltoformcompetitiveadsorptiononthesurfaceofbentoniteꎬthedosageofnaphthalenebasedwaterreducinga ̄gentscanbereduced.Theresultsindicatethatthe...