Durability, life cycle cost and life cycle assessment of binary mixtures with fly ash, rice husk ash and concrete demolition waste

Authors

Keywords:

Durability. Life Cycle Cost. Life Cycle Assessment. Binary mixtures of concrete. Artificial pozzolan. Concrete demolition waste.

Abstract

This study analyses, by means of lifespan cost and lifespan assessment, the production of binary concrete admixtures compound by artificial pozzolan and concrete demolition waste. Ten formulations were developed, differentiating them in terms of mixtures, binder and aggregate content, in order to verify their potential use in concrete columns. The replacements were 25% of Portland cement for fly ash and rice husk ash, 15% and 30% of natural coarse aggregates for concrete demolition waste. The results revealed that the mixtures with pozzolan and demolition waste showed higher resistance to chloride penetration. The lowest concrete cost was achieved in the highest compressive strength (35 MPa) and the concrete admixture containing 15% replacement of the natural coarse aggregate by the recycled concrete aggregate and 25% substitution of cement by rice husk ash can be classified as the most environmentally sustainable one, especially in carbon dioxide emissions, among the mixtures studied.

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Author Biographies

Cristian Jonathan Franco de Lima, Universidade do Vale do Rio dos Sinos - UNISINOS (São Leopoldo)

Departamento de Engenharia Civil, Construção Civil e Preservação Ambiental, Concretos e Argamassas.

Francisco Roger Carneiro Ribeiro, Universidade do Vale do Rio dos Sinos - UNISINOS (São Leopoldo)

Mestre em Engenharia Civil na Universidade do Vale do Rio dos Sinos (UNISINOS-RS). Graduado em Engenharia Civil pela Universidade Estadual Vale do Acaraú (UVA-CE).

Regina Célia Espinosa Modolo, Universidade do Vale do Rio dos Sinos - UNISINOS (São Leopoldo)

Graduação em Agronomia pela Universidade Federal do Espírito Santo. Mestrado em Gestão Ambiental, Materiais e Valorização de Resíduos pela Universidade de Aveiro. Doutorado em Ciências e Engenharia do Ambiente pela Universidade de Aveiro, ambos revalidados pela Universidade Federal do Rio de Janeiro. Professor Assistente I nos Programas de Pós-graduação em Engenharia Civil e Engenharia Mecânica.

Geraldo Cechella Isaia, Universidade Federal de Santa Maria (UFSM)

Graduação em Engenharia Civil pela Universidade Federal do Rio Grande do Sul. Mestrado em Engenharia Civil pela Universidade Federal do Rio Grande do Sul. Doutorado em Engenharia Civil pela Universidade de São Paulo. Professor permanente do Programa de Pós-Graduação em Engenharia Civil e Ambiental da Universidade Federal de Santa Maria (UFSM).

Mauricio Mancio, Universidade do Vale do Rio dos Sinos - UNISINOS (São Leopoldo)

Graduação e Mestrado em Engenharia Civil pela Universidade Federal do Rio Grande do Sul. Doutorado em Engenharia Civil e Ambiental pela Universidade da California, Berkeley. Coordenador do Programa de Pós-Graduação em Engenharia Civil (PPGEC) e Professor nos cursos de Engenharia Civil e Ambiental, Ciência e Engenharia de Materiais da Universidade do Vale do Rio dos Sinos (UNISINOS-RS)

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Published

2021-11-01

How to Cite

LIMA, C. J. F. de; RIBEIRO, F. R. C.; MODOLO, R. C. E.; ISAIA, G. C.; MANCIO, M. Durability, life cycle cost and life cycle assessment of binary mixtures with fly ash, rice husk ash and concrete demolition waste. Ambiente Construído, [S. l.], v. 22, n. 1, p. 161–177, 2021. Disponível em: https://seer.ufrgs.br/index.php/ambienteconstruido/article/view/111831. Acesso em: 24 jun. 2025.

Issue

Vol. 22 No. 1 (2022)

Section

Artigos

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ISSN 1678-8621

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