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• Evaluation of self-compacting concretes produced with MK, RHA, limestone filler and hydrated-lime. • Metakaolin and rice husk improve the viscosity of SCC due to their higher specific surfaces. • Even with low PC consumption it was possible to obtain SCC with compressive strength up to 46 MPa. • Incorporation of SCM reduced the Cl- ion diffusion and increased the resistivity of the SCC. Self-compacting concrete (SCC) is a high-performance concrete that has gained prominence in recent years due to its high fluidity and cohesion characteristics. In this material, the use of supplementary cementitious materials (SCM) is necessary for the consolidation properties and durability requirements to be achieved. SCM obtained from waste or industrial by-products can improve SCC properties and reduce the environmental impact associated to Portland Cement (PC) production. In light of these facts, the present paper addressed the effects of high levels of mineral additions (metakaolin, rice husk ash and limestone filler) and hydrated-lime on the physical (ultrasonic pulse and capillary absorption), mechanical (compressive strength) and durability (carbonation resistance, chloride ion diffusion and electrical resistivity) properties of SCC. The results showed that metakaolin and rice husk ash increase the viscosity of SCC due to their larger specific surface area. The simultaneous incorporation of high content of mineral additions reduced the compressive strength of SCC. However, it was possible to obtain concretes with compressive strength between 22 and 46 MPa at 28 days and with adequate physical performance and durability. The addition of hydrated-lime to SCC proved efficient, mainly due to reduced carbonation depth associated to alkaline reserve replacement. [ABSTRACT FROM AUTHOR]

• Simultaneous use of SF and RM improves the mechanical properties of SCC. • Cement substituting showed to be proficient of improving the behaviour of SCC. • Using RM and LS were observed to be more cohesive mixes than mixes containing G. • Using Marble and SF indicates the best mechanical properties of SCC. Reducing waste materials content plays an important role in protecting the environment. Conversely, emitted gases from factories during the production of some industry materials, such as cement have harmful effects on the environment and human health. In this study, both fresh and hardened state properties of self-compacting concrete (SCC), containing waste materials, including red mud (RM) granite (G), limestone (LS) and marble (M) is investigated. RM is used as a partial replacement of cement at five different substituting contents: 0%, 2.5%, 5%, 7.5% and 10% (in term of weight). Also, G, LS and M are used as fillers in different mixes, separately (100 kg/m3). To improve the properties of mixes, steel fibres (SF) are also added at volume percentages of 0%, 0.1% and 0.2%. A total of 37 mixes are produced, and slump, compressive and tensile strength, water absorption, electric resistivity, durability against sulfuric acid and reduction in compressive resistance after the sulfuric acid attack are measured. The obtained outcomes indicated that SF has a substantial influence on improving the rheological performance of SCC, particularly when 2.5% RM with G were used. Additionally, a slight improvement in the compressive strength after acid immersion was observed when 0.1% SF were used; however, there is no substantial difference between the compressive strength of SCC having 0.1% SF and those containing 0.2% SF, against sulfuric acid attack. [ABSTRACT FROM AUTHOR]