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Properties of Concretes Incorporating Recycling Waste and Corrosion Susceptibility of Reinforcing Steel Bars

机译:加固钢筋再循环废料及腐蚀易感性的混凝土的性能

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摘要

In this paper, properties of concretes incorporating recycling waste and corrosion susceptibility of reinforcing steel bars were studied. It was established that fineness of ground granulated blast furnace slag (GGBFS) and fly ash (FA) and their simultaneous combination have an influence on the kinetics of strength development of Portland cements and concretes. The compressive strength of concrete containing 10% by mass of GGBFS and 10% by mass of FA even exceeds the compressive strength of control concrete by 6.5% and concrete containing 20% by mass of GGBFS by 8.8% after 56 days of hardening. The formation of the extra amount of ettringite, calcium hydrosilicates as well as hydroaluminosilicates causes tightening of a cement matrix of concrete, reducing its water absorption, and improving its resistance to freezing and thawing damage.
机译:本文研究了加入钢筋再循环废料和腐蚀易感性的混凝土的性质。正建立了地面粒状高炉渣(GGBF)和飞灰(FA)的细度及其同时组合对波特兰水泥和混凝土的力量发展动力学产生了影响。含有10质量%的GGBF的混凝土的压缩强度和10质量%的FA甚至超过了6.5%的控制混凝土的抗压强度,并在硬化56天后含有20质量%的GGBF的混凝土。形成额外量的Ettringite,氢化钙和加氢氨硅质,导致混凝土的水泥基质的收紧,降低吸水性,并改善其对冷冻和解冻损伤的抗性。

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