材料科学
韧性
结构工程
偏心率(行为)
刚度
复合材料
承载力
抗压强度
流离失所(心理学)
栏(排版)
水泥
工程类
政治学
法学
心理治疗师
心理学
连接(主束)
作者
Haiyan Ma,Xiang-Chao Zeng,Hongfa Yu,Peng Yue,Haiwei Zhu,Chengyou Wu
出处
期刊:Structural Engineering and Mechanics
[Techno-Press]
日期:2020-01-01
卷期号:76 (4): 541-550
标识
DOI:10.12989/sem.2020.76.4.541
摘要
As a new type of concrete material, basic magnesium sulfate cement concrete (BMSC) has the advantages, such as early strength, high strength, good toughness and crack resistance. However, it is unclear about the degradation of the mechanical properties of BMSC columns, which is exposed to the natural environment for several years. In order to apply this new concrete to practical engineering, six large-eccentricity compressive columns of BMSC were studied. The mechanical properties such as the crack propagation, failure morphology, lateral displacement and bearing capacity of BMSC column were studied. The results show that the degradation rate of ultimate load of BMSC column is from 6% to 7%. The degradation rate of the stiffness of the column is from 6% to 13%. With the increase of compressive strength of BMSC, the axial displacement and lateral displacement are gradually reduced. The calculation model of bearing capacity of the BMSC column under the large eccentric compression is proposed. This paper provides a reference for the application of BMSC columns in the civil engineering.
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