Applicability of models provided by technical standards to estimate the static modulus of elasticity of concretes produced with recycled coarse aggregates. (3rd June 2020)

• Record Type: Journal Article
• Authors: Sousa, Fernando Henrique F.; Kazmierczak, Claudio de Souza; Quinino, Uziel C. D. M.; Fernandes, Ana Júlia M. M.; Kulakowski, Marlova Piva
• Is Part Of: Structural concrete. Volume 22(2021)Supplement 1
• Page Start: E94
• Page End: E104
• Publication Date: 2020-06-03
• Subjects: ABNT NBR 6118 -- concrete -- recycled aggregate concrete -- red ceramic recycled aggregate -- static modulus of elasticity; Reinforced concrete -- Periodicals; 624.1834
• DOI: 10.1002/suco.201900420
• Languages: English
• ISSNs: 1464-4177

Abstract

Abstract: This work determines the applicability of models provided by international standards to estimate the static modulus of elasticity of concretes produced with recycled coarse aggregates, identifying the influence of the compressive strength, bulk specific gravity and porosity on the static modulus of elasticity, and the relation between these parameters and the estimated modulus of elasticity. Recycled aggregates produced from concrete and of ceramic blocks were used in a replacement rate of 30% to the natural aggregates, in three classes of strength. The static modulus of elasticity of the concretes produced with recycled aggregates has a higher relationship to the compressive strength than the other properties, the static modulus of elasticity compared to the estimated modulus of elasticity shows good relation only for concretes produced entirely with natural aggregates and the modulus of elasticity of concretes with recycled coarse aggregates cannot be estimated by the models proposed by the technical standards.