摘要
氯氧镁水泥混凝土是用氯氧镁水泥作为胶凝材料,砂、石作集料,再加入一定比例改性剂,经搅拌而得的混凝土。利用镁水泥混凝土修筑示范路面,通过回弹仪、X-Ray衍射仪(XRD)、扫描电子显微镜(SEM)检测路面的抗压强度、相组成和微观结构进行其力学性能研究。结果表明,修筑示范路面早期抗压强度增加很快,3 d就能通车,后期基本保持稳定。修筑路面的主要相组成为5·1·8相,不随路面使用时间的延长而变化,且其具有针状结构。
Magnesium Oxychloride Cement(MOC)concrete roadway has been obtained by the chemical reaction of magnesia,magnesium chloride and water incorporated with stone.The compressive strength,microstrueture and phase composition of MOC pavement were examined by rebound apparatus,X-ray diffraction(XRD)and scanning electron microscope(SEM).The results show that MOC roadway has high compressive strength which meets the requirement of traffic in 3 days,and stays stable over time.The major hydration product is 5·1·8 phase with a needlelike shape in the MOC roadway.
作者
肖学英
常成功
郑卫新
房建宏
黄世静
文静
董金美
安生霞
XIAO Xue-Ying;CHANG Cheng-gong;ZHENG Wei-xin;FANG Jian-hong;HUANG Shi-jing;WEN Jing;DONG Jing-mei;AN Sheng-xia(Qinghai Institute of Salt Lakes,Chinese Academy of Sciences,Xining,810008,China;Transportation Research Institute of Qinghai Province,Xining 810008,China;University of Chinese Academy of Sciences,Beijing,100049,China)
出处
《盐湖研究》
CSCD
2016年第3期50-54,共5页
Journal of Salt Lake Research
基金
青海省科技支撑计划(2013-J-109)
青海省重大科技专项(2014-GX-A2A)
青海省盐湖资源综合利用重点实验室开放基金(Q-SYS-2014-KF-02)
关键词
氯氧镁水泥
混凝土
强度
微观机理
Magnesium oxchloride cement
Concrete
Strength
Microcosmic mechanism
