中国港湾建设ChinaHarbourEngineering聚羧酸减水剂对原材料波动的敏感性研究张学治，张全林（中交一航局第五工程有限公司，河北秦皇岛066002）摘要：随着聚羧酸减水剂应用领域的不断扩大和研究领域的不断深入，在使用过程发现聚羧酸减水剂对使用环境和原材料表现出了较高的敏感性，但目前对于聚羧酸减水剂敏感性规律研究较少。为了更好地指导聚羧酸减水剂在施工中的应用，文章分析了温度、搅拌时间、减水剂掺量、单方用水量、水泥、粉煤灰、矿渣粉、集料含泥量、机制砂石粉含量对聚羧酸减水剂敏感性能的影响，通过进行水泥净浆、砂浆流动度和混凝土坍落度等试验，探讨了聚羧酸减水剂对上述因素敏感性的影响规律。研究结果表明：聚羧酸减水剂对含泥量敏感性最高，对不同品种水泥、掺合料掺量和石粉含量均具有较高的敏感性；在30~150s范围内，对搅拌时间敏感性程度最低；聚羧酸减水剂对掺量和单方用水量敏感性均高于奈系减水剂。关键词：聚羧酸减水剂；敏感性；含泥量；水泥；掺合料中图分类号：U654文献标志码：A文章编号：2095-7874（2023）09-0095-08doi：10.7640/zggwjs202309019SensitivitystudyofpolycarboxylatewaterreducingagenttorawmaterialfluctuationZHANGXue-zhi,ZHANGQuan-lin（No.5EngineeringCo.,Ltd.ofCCCCFirstHarborEngineeringCo.,Ltd.,Qinhuangdao,Hebei066002,China）Abstract：Withthecontinuousexpansionoftheapplicationfieldanddeepeningofresearchfieldsofpolycarboxylatewaterreducingagents,ithasbeenfoundthatpolycarboxylatewaterreducingagentsexhibithighsensitivitytotheusageenvironmentandrawmaterialsduringtheuseprocess.However,thereiscurrentlylittleresearchonthesensitivitylawofpolycarboxylatewaterreducingagents.Inordertobetterguidetheapplicationofpolycarboxylatewaterreducingagentsinconstruction,thispaperanalyzestheeffectsoftemperature,mixingtime,waterreducingagentdosage,waterconsumptionpercubicmeter,cement,flyash,slagpowder,aggregatemudcontent,andmachine-madesandandstonepowdercontentonthesensitivityperformanceofpolycarboxylatewaterreducingagents.Throughexperimentsoncementpaste,mortarfluidity,andconcreteslump,theinfluenceofpolycarboxylatewaterreducingagentsonthesensitivityoftheabovefactorswasexplored.Theresearchresultsindicatethatpolycarboxylatewa...
