文献类型：期刊文献

中文题名：外加剂对水泥基注浆材料流变性能的调控作用

英文题名：Regulation of Admixtures on the Rheological Behavior of Cementitious Grout

作者：张欢[1];邓最亮[2,3];郑柏存[1];郭卫红[4]

机构：[1]华东理工大学体育新材料研发中心,上海200237;[2]上海三瑞高分子材料有限公司,上海200237;[3]上海建筑外加剂工程技术研究中心,上海200232;[4]华东理工大学材料科学与工程学院高分子合金研究室,超细材料制备与应用教育部重点实验室,上海市先进聚合物材料重点实验室,上海200237

年份：2014

卷号：33

期号：2

起止页码：321

中文期刊名：硅酸盐通报

外文期刊名：Bulletin of the Chinese Ceramic Society

收录：CSTPCD;;北大核心:【北大核心2011】；CSCD:【CSCD2013_2014】；

语种：中文

中文关键词：减水剂;缓凝剂;剪切应力;表观粘度

外文关键词：water reducing agent ; retarder; shear stress; apparent viscosity

摘要：为了解决水泥基注浆材料在施工过程中出现的高温引起的注浆返浓问题,本文选取聚羧酸减水剂和蔗糖进行了水泥浆液流变性能试验,考察减水剂和蔗糖掺量对浆液流动性的影响,并研究了温度、时间对水泥浆液流变性能的影响。结果表明,水化时间对水泥浆液的流变性影响不大,而温度升高会增大水泥浆液的剪切应力和表观粘度,利用减水剂与蔗糖的复合作用可以降低水泥浆液的屈服应力和表观粘度,可以有效调控水泥浆液随温度变化的流变性能。
Water reducing agent and sucrose were selected to regulate the rheologieal behavior of cement paste, so as to solve＂ the viscosity＇s suddenly increase of the returned paste＂ problem caused by high temperature during construction process. The effects of the dosage of water reducing agent and sucrose and the temperature and time on the rheological behavior of cement paste were investigated. The results show that, the shear stress and the apparent viscosity of cement paste increase without significantly with the delay of time, while the shear stress and the apparent viscosity of cement paste increase obviously with the increase of temperature. The shear stress and the apparent viscosity of cement paste present a sharply descend incorporating with water reducing agent and retarder, thus to obtain a better rheological behavior of cement paste.