Recycled Eco-Concretes Containing Fine and/or Coarse Concrete Aggregates. Mechanical Performance

Author:

Plaza Pablo1ORCID,Sáez del Bosque Isabel Fuencisla1,Sánchez Javier2ORCID,Medina César2ORCID

Affiliation:

1. School of Engineering, University of Extremadura, UEx-CSIC Partnering Unit, Institute for Sustainable Regional Development (INTERRA), 10003 Cáceres, Spain

2. Eduardo Torroja Institute for Construction Science, Spanish National Research Council (CSIC), 28033 Madrid, Spain

Abstract

This study analysed the effect of substituting different percentages of natural aggregate with recycled aggregate from concrete crushing, using a coarse fraction as well as a fine fraction. Natural and recycled materials were classified in order to analyse the mechanical performance and impermeability of these eco-concretes in the fresh state as well as in the hardened state. A statistical analysis also determined whether the performance loss was significant from a statistical point of view, finding strength decreases of less than 13% in compressive strength and losses of less than 20% in flexural strength. An increasing trend was found in permeability as the percentage of recycled aggregate in the mix increased.

Funder

Ministerio de Ciencia e Innovación

Government of Extremadura

Ministerio de Educación y Formación Profesional

Publisher

MDPI AG

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