非约束条件下掺ZY膨胀剂水泥石碳化机理分析  

Mechanism analysis of carbonation of ZY expansive agent-added cement pastes under unstrained condition

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11期13-18,共6页

基　　金：黑龙江省科研机构创新能力提升专项计划(YC2015D004)

摘　　要：本文通过测试水泥石抗压强度、碳化深度研究了非约束条件下掺ZY膨胀剂的水泥石抗碳化性能,通过X射线衍射(XRD)、扫描电镜分析(SEM)等手段揭示了掺ZY膨胀剂水泥石碳化机理。试验结果表明:在非约束条件下,掺8%ZY膨胀剂使水泥石抗碳化性能下降,同时造成了水泥石孔结构的裂化;碳化使得ZY膨胀剂水化产物钙矾石分解产生大量球霰石。This paper investigate the compressive strength,carbonation depth of ZY expansive agent-added cement paste,the mechanism of carbonation of ZY expansive agent-added cement paste was analyzed by using X-ray diffraction（XRD）and Scanning electron microscope（SEM）methods.The results showed that the carbonation resistance property of 8% ZY expansive agent-added cement paste decreased and the pore structure of hardened cement paste was cracked.The carbonation process led to the decomposition of ettringite into vaterite.

关 键 词：ZY膨胀剂 水泥石 碳化性能 水化产物 

分 类 号：TU528[建筑科学—建筑技术科学]