Resumo

SILVA URREGO, Yimmy Fernando et al. Optimization of Compressive Strength Using Design of Extreme Vertices Mixing, in Ternary Concretes Based on Masonry Residue and Hydrated Lime. Rev.EIA.Esc.Ing.Antioq [online]. 2019, vol.16, n.31, pp.99-113. ISSN 1794-1237.  https://doi.org/10.24050/reia.v16i31.1177.

The search for alternative materials that partially substitute Portland cement is important because of the environmental problems that this presents in its production, hence the need to investigate the use of ternary mixtures (Portland cement for general use (OPC), masonry residue (RM) and hydrated lime (CAL) to improve concrete properties and reduce their environmental impact. According to this, the present research did a design of extreme vertices mixing to study the effect of the use of RM from construction and demolition waste (RCD) and CAL as partial substitution of Portland cement (up to 20% by weight) in concrete ternary in the compressive strength after 28 days of curing. On the other hand, the properties in fresh state were evaluated (slump) and hardened state, such as compressive strength, indirect tensile strength, absorption and porosity and capillary suction. The results showed that a higher percentage of MR replacement and lower CAL had better compressive strengths than when higher percentages of hydrated lime were present. The compressive strength increased by 25.1% and 16.1% at 28 and 60 days of curing with respect to the reference mix.

Palavras-chave : Ternary concretes; Portland cement; Masonry residue; Hydrated lime; Compressive strength; Construction and demolition waste.

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