Design Procedures for Sustainable Structural Concretes Using Wastes and Industrial By-Products

The protection of the environment must be a priority in our society, and construction sector can contribute significantly to this goal. Construction, being one industrial sectors that is more demanding terms raw materials, reinforce its effort implement, profound systematic way, paradigm circular economy. In sense, recent years several studies have been trying solutions aimed at reintroducing by-products or residues new products for industry. It should noted nowadays it increasingly important introduce higher percentage recycled materials concrete. context, present work addresses appropriateness design procedure proposed maximize content electric arc furnace slag (EAFS) include tire steel fibers (RTSF) production sustainable structural concretes. For this, properties various concrete mixtures fresh hardened state, obtained by substantial substitution coarse fine natural aggregates EAFS fly ash (FA), were investigated. was based on two conventional reference (REF1 REF2), using modified Andreasen Andersen particle packing model, these optimized achieve maximum density. Compressive strength, modulus elasticity behavior, physical assessed order define best mix proportions with respect predefined requirements ordinary mixtures. Untreated included developed perform comparison unreinforced concretes (REF2) (EAFS8D1). This incorporation intended improve behavior aggregates. Mixtures high percentages waste up 70% (in weight), 10% weight) FA obtained, showing competitive mechanical compared REF1 REF2. These compositions showed minimum compressive strengths between 9 MPa 37 MPa, respectively. study coverd major classes used as material, namely fiber reinforced