HLC-PCE早强型聚羧酸系减水剂降黏效果评价及工程应用  

Viscosity reduction evaluation and engineering application of HLC-PCE early strength polycarboxylate superplasticizer

作　　者：温金保[1,2,3,4] 刘兴荣 杜志芹[1,2,3,4] 唐修生 WEN Jinbao;LIU Xingrong;DU Zhiqin;TANG Xiusheng(Nanjing Hydraulic Research Institute,Nanjing 210029,China;Nanjing R&D Hi-Tech Co.Ltd.,Nanjing 210024,China;Research Center on New Materials in Hydraulic Structures of Ministry of Water Resources,Nanjing 210024,China;Academician Workstation,Anhui Ruihe New Materials Co.Ltd.,Maanshan 243000,China)

机构地区：[1]南京水利科学研究院,江苏南京210029 [2]南京瑞迪高新技术有限公司,江苏南京210024 [3]水利部水工新材料工程技术研究中心,江苏南京210024 [4]安徽瑞和新材料有限公司安徽省院士工作站,安徽马鞍山243000

出　　处：《新型建筑材料》2021年第4期54-58,共5页New Building Materials

基　　金：中央级公益性科研院所基本科研业务基金(Y420010)。

摘　　要：针对高强混凝土预制构件因水胶比低导致混凝土过黏的问题,进行了高强混凝土预制构件用早强型聚羧酸系减水剂的黏性试验研究,对掺自主研制的早强型聚羧酸系减水剂HLC-PCE的净浆Marsh时间、净浆/砂浆塑性黏度、混凝土T500及倒坍落度排空时间等性能进行评价,并与国内外同类产品进行对比。结果表明,掺HLC-PCE的水泥基材料在流动度相当的前提下,具有较短的Marsh时间、较低的净浆/砂浆塑性黏度及较短的混凝土倒坍落度排空时间,降黏性能优异。High strength concrete for prefabricated components is too sticky due to low water-to-binder ratio.Because of this problem,an experimental study on the viscosity of early strength polycarboxylate superplasticizer for high strength concrete prefabricated components was carried out.The properties of the cement-based materials with early strength polycarboxylate superplasticizer HLC-PCE independently developed,such as Marsh time of pastes,plastic viscosity of pastes/mortars,T500 and invertedslump cone flowtime of concrete,were evaluated.And comparison was carried out with similar products at home and abroad.The results show that the cement-based materials mixed with HLC-PCE early strength polycarboxylate superplasticizer have shorter Marsh time of pastes,lower plastic viscosity of cement-based pastes/mortars and shorter inverted slump cone flowtime of concrete when the fluidity is the same,so the viscosity reducing property is excellent.

关 键 词：早强型聚羧酸系减水剂 降黏 Marsh时间 塑性黏度 倒坍落度排空时间 

分 类 号：TU528.042.2[建筑科学—建筑技术科学]