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Evaluating Simultaneous Impact of Slag and Tire rubber powder on Mechanical Characteristics and Durability of Concrete

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Journal of Renewable Materials 2022年第8期10卷 2155-2177页

作者： Mostafa Amiri Farzad Hatami Emadaldin Mohammadi Golafshani Department of Civil Engineering Science and Research BranchIslamic Azad UniversityTehranIran Structural and Earthquake Research Center(SERC) Amirkabir University of Technology(Tehran Polytechnic)TehranIran Department of Civil Engineering Monash UniversityMelbourneAustralia

In this experimental study,the impact of Portland cement replacement by ground granulated blast furnace slag(GGBFS)and micronized rubber powder(MRP)on the compressive,flexural,tensile strengths,and rapid chloride migration test(RCMT)of concrete were *** this study,samples with different binder content and water to binder ratios,including the MRP with the substitution levels of 0%,2.5%and 5%,and the GGBFS with the substitution ratios of 0%,20%and 40%by weight of Portland cement were *** to the results,in the samples containing slag and rubber powder in the early ages,on average,a 12.2%decrease in the mechanical characteristics of concrete was observed,nonetheless with raising the age of the samples,the impact of slag on reducing the porosity of concrete lowered the negative impact of rubber *** durability characteristics,the RCMT results of the samples were enhanced by using rubber powder because of its insulation ***,adding slag into the MRP-included mixtures results in a 23%reduction in the migration rate of the chloride ion *** last,four mathematical statements were derived for the mechanical and durability of concrete containing the MRP and GGBFS utilizing the genetic programming method.

关键词： micronized rubber powder ground granulated blast furnace slag waste materials mechanical properties durability

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