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An Overview of Study on Basic Magnesium Sulfate Cement and Concrete in China (2012-2019)
Xiangchao Zeng,Hongfa Yu,Chengyou Wu 대한토목학회 2019 KSCE JOURNAL OF CIVIL ENGINEERING Vol.23 No.10
In this review, investigations on the product of hydration, mechanical behavior, durability and application of basic magnesium sulfate cement (BMS) have been carried out in the past seven years in China. Structural characterization of 5·1·7 phase and hydrationproduct of BMS are introduced in the first part of this paper. The second part gives the research on the basic properties of BMS:strength, setting time, and microstructure of BMS. The third part show the durability of the cement: water resistance, chloridepenetration, ability of protecting reinforcing bars and carbonization. The last part is devoted to the production and application ofBMS, which indicates that basic magnesium sulfate cement has wide application potential in the construction industry.
Performance of BMSC column with large eccentricity under natural exposure conditions
Haiyan Ma,Xiangchao ZENG,Hongfa Yu,Peng Yue,Haiwei Zhu,Chengyou Wu 국제구조공학회 2020 Structural Engineering and Mechanics, An Int'l Jou Vol.76 No.4
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.