Effect of ground granulated blast funrnace slag and fly ash on strength, permeability, and under-water abrasion of fine-grained concrete

  • Truong Van Quyet

    University of Transport and Communications, No 3 Cau Giay Street, Hanoi, Vietnam
  • Nguyen Thanh Sang

    University of Transport and Communications, No 3 Cau Giay Street, Hanoi, Vietnam
Email: quyet.tv@utc.edu.vn
Từ khóa: fine-grained concrete, supplementary cementitious materials (SCMs), GGBFS, fly ash, rapid chloride permeability, abrasion underwater

Tóm tắt

The utilisation of supplementary cementitious materials (SCMs) is widespread in the concrete industry because of the performance benefits and economic. Ground granulated blast furnace slag (GGBFS) and fly ash (FA) have been used as the SCMs in concrete for reducing the weight of cement and improving durability properties. In this study, GGBFS at different cement replacement ratios of 0%, 20%, 40% and 60% by weight were used in fine-grained concrete. The ternary binders containing GGBFS and FA at cement replacement ratio of 60% by weight have also evaluated. Flexural and compressive strength test, rapid chloride permeability test and under-water abrasion test were performed. Experimental results show that the increase in concrete strength with GGBFS contents from 20% to 40% but at a higher period of maturity (56 days and more). The chloride permeability the under-water abrasion reduced with the increasing cement replacement by GGBFS or a combination of GGBFS and FA

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