掺MgO混凝土结构微膨胀发展历程的监测方法  

A method for monitoring the microexpansion development process of concrete structures mixed with MgO

作　　者：王丙垒 明阳 沈超 纪宪坤 朱国军 张登科 WANG Binglei;MING Yang;SHEN Chao;JI Xiankun;ZHU Guojun;ZHANG Dengke(Wuhan Sanyuan Special Building Materials Co.Ltd.,Wuhan 430083,China;School of Civil Engineering and Architectural Engineering,Guilin University of Technology,Guilin 541004,China)

机构地区：[1]武汉三源特种建材有限责任公司,湖北武汉430083 [2]桂林理工大学土木与建筑工程学院,广西桂林541004

出　　处：《新型建筑材料》2023年第5期149-154,163,共7页New Building Materials

基　　金：河北省建设科技研究指导性计划项目(2022-2158)。

摘　　要：基于埋入式振弦应变计的工作原理,提出了一种掺MgO混凝土结构膨胀历程的监测方法,将该方法实施于某隧道侧墙混凝土结构案例中,对比不同约束监测点对应变数据的影响,以及掺与不掺MgO对现浇混凝土实体结构收缩性能的影响,并通过差值分析使掺MgO现浇混凝土结构膨胀历程得到了实现。Based on the working principle of the embedded vibrating string strain sensor,a monitoring method for the expansion process of concrete structures mixed with MgO is proposed.This method is applied to the concrete structure of side wall of a tunnel.The influence of different monitoring points on strain data and the influence of mixed with or without MgO on the shrinkage performance of cast-in-place concrete solid structure are compared,and the expansion process of cast-in-place concrete structure with MgO is realized through difference analysis.

关 键 词：振弦应变计 混凝土结构 MGO膨胀剂 膨胀历程 监测方法 

分 类 号：TU528.55[建筑科学—建筑技术科学]