脱模时间对掺ZY膨胀剂水泥石抗碳化性能的影响研究  

Effect of demold age on carbonation of ZY expansive agent-added cement pastes

作　　者：郭少昱 江守恒[2] 朱卫中 

机构地区：[1]哈尔滨市市政工程设计院,黑龙江哈尔滨150030 [2]黑龙江省寒地建筑科学研究院,黑龙江哈尔滨150080 [3]黑龙江省城镇建设研究所,黑龙江哈尔滨150040

出　　处：《黑龙江水利》2017年第9期24-28,共5页

基　　金：黑龙江省科研机构创新能力提升专项计划(YC2015D004)

摘　　要：在实际工程应用中,施工条件对掺ZY膨胀剂混凝土的耐久性具有显著影响,其中抗碳化性能是重要课题之一。本文主要研究加速碳化条件下,脱模时间对掺膨胀剂水泥石抗碳化性能的影响,通过测试力学性能、碳化深度及计算碳化系数发现:掺8%ZY膨胀剂降低了水泥石力学性能,且增加了水泥石碳化深度,但延长水泥石脱模时间可有效提高掺ZY膨胀剂水泥石的抗压强度及显著降低水泥石的碳化深度。Construction conditions shows significant effect on the durability of concrete during the process of using ZY expansive agent, carbonation property is one of the most severe subjects. This study was conducted under the accelerated carbonation condition, the effect of demold age on carbonation of ZY expansive agent-added cement pastes was investigated, by testing the mechanical properties, carbonation depth and calculating the carbonation parameter, the following results could be drawn, the compressive strength decreased with 8 % ZY expansive agent, and demold age was extended, the compressive strength effectively improved. the carbonation depth increased, however, when the and carbonation resistance property within 7d were

关 键 词：脱模时间 ZY膨胀剂 水泥石 碳化性能 

分 类 号：TU528[建筑科学—建筑技术科学]