Effect of Modified Supplementary Cementitious Material on Performance of Mortar and Concrete in Marine Environment

doi:10.1007/s12204-017-1873-x

摘要/Abstract

摘要： This study aims to explore the durability issues regarding chloride ion corrosion of concrete structures, and further investigates the modified supplementary cementitious material (MSCM) which acts as a significant enhancer of performance of mortar and concrete. The composition of MSCM includes mineral slag powder, fly ash and inhibitor. The microstructure, sulfate erosion resistance and electric flux of high-performance concrete are tested with MSCM, and the results show that the pore structure of concrete is improved significantly along with excellent electrochemical performance. It is observed that the substantiality of concrete after being mixed with 18% (mass fraction) MSCM is enhanced effectively. The sulfate resistance coefficient of concrete is found to be greater than 1.2, and the electric flux of concrete is less than 600C. These results have demonstrated that the MSCM possesses an excellent electrochemical performance and a wide applicative prospect in marine environment.

关键词: corrosion, compressive strength, inhibitor, electric flux, durability

Abstract: This study aims to explore the durability issues regarding chloride ion corrosion of concrete structures, and further investigates the modified supplementary cementitious material (MSCM) which acts as a significant enhancer of performance of mortar and concrete. The composition of MSCM includes mineral slag powder, fly ash and inhibitor. The microstructure, sulfate erosion resistance and electric flux of high-performance concrete are tested with MSCM, and the results show that the pore structure of concrete is improved significantly along with excellent electrochemical performance. It is observed that the substantiality of concrete after being mixed with 18% (mass fraction) MSCM is enhanced effectively. The sulfate resistance coefficient of concrete is found to be greater than 1.2, and the electric flux of concrete is less than 600C. These results have demonstrated that the MSCM possesses an excellent electrochemical performance and a wide applicative prospect in marine environment.

Key words: corrosion, compressive strength, inhibitor, electric flux, durability

中图分类号:

TU 50

PAN Chonggen1* (潘崇根), LING Mingfeng1 (林明峰), WEI Dong1 (魏冬),. Effect of Modified Supplementary Cementitious Material on Performance of Mortar and Concrete in Marine Environment[J]. 上海交通大学学报（英文版）, 2017, 22(5): 541-548.

PAN Chonggen1* (潘崇根), LING Mingfeng1 (林明峰), WEI Dong1 (魏冬),. Effect of Modified Supplementary Cementitious Material on Performance of Mortar and Concrete in Marine Environment[J]. Journal of shanghai Jiaotong University (Science), 2017, 22(5): 541-548.

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