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PROPERTIES OF HIGH STRENGTH CONCRETE CONTAINING ELECTRIC ARC FURNACE STEEL SLAG AGGREGATE

2014; Assiut University; Volume: 42; Issue: 3 Linguagem: Inglês

10.21608/jesaun.2014.115011

2356-8550

Mohammed Emad Abdelazzzim, Mohammed Abdelsame Eid, Noby Mohammed Hassan,

Concrete and Cement Materials Research

Steel slag is produced as by-product during the oxidation of steel pellets in an electric arc furnace.This by-product can be broken down to smaller sizes to be used as aggregates in asphalt andconcrete. In the current research, locally produced steel slag in Egypt was used as a replacement ofthe natural aggregate for producing high strength concrete. Four groups consisted of twenty-fournormal, high and ultra-high strength concrete mixtures with replacement percentages 0%, 33.33%,66.67% and 100% by weight of the coarse aggregate with two cement contents (450 kg/m3 and 600kg/m3) and three silica fume percentages (0%, 10% and 20%) were investigated. In addition, otherthree groups consists of six concrete mixes of cement contents 350 kg/m3 and 450 kg/m3 were castto study the possibility of using the fine electric arc furnace steel slag particles as a replacement ofthe used natural fine aggregate in the concrete mixtures . The effect of the studied key parameterswhich are the replacement ratio of the used electric arc furnace steel slag (EAFSS), the cementcontent and the silica fume percentage on the volume weight, compressive strength, flexuralstrength, indirect tensile strength, static of elasticity modulus and Permeability coefficient werestudied. The results indicated that the highest concrete strength was obtained for the mixturespossessed a percentage of 66.67% steel slag aggregates as a replacement of the coarse aggregate.Moreover, the replacement of the natural fine aggregate by the fine steel slag as well as the EAFSScoarse aggregate produced a high strength pervious porous concrete.