Comportamiento mecánico y frente a corrosión de mortero y hormigón armado fabricado con escorias de incineradora de residuos sólidos urbanos

Rita Ávila; Eduardo Medina; David M. Bastidas

doi:10.3989/revmetalm.102

Authors

Rita Ávila School of Building, Polytechnic University of Madrid (ETSE-UPM) https://orcid.org/0000-0001-6742-8245
Eduardo Medina School of Building, Polytechnic University of Madrid (ETSE-UPM) https://orcid.org/0000-0002-1470-3597
David M. Bastidas Dept. Surface Engineering, Corrosion & Durability, National Centre for Metallurgical Research (CENIM), CSIC https://orcid.org/0000-0002-8720-7500

DOI:

https://doi.org/10.3989/revmetalm.102

Keywords:

Bottom ash, Corrosion, Municipal solid waste (MSW), Reinforced concrete

Abstract

Electrochemical monitoring was performed to evaluate the influence of municipal solid waste incineration residues (MSWI) made concrete, on reinforcement corrosion, using four different steel reinforce-ments grades, traditional carbon steel B-500-SD and three stainless steels, the austenite AISI 304, duplex AISI 2304, and lean-duplex AISI 2001, embedded in mortars manufactured using bottom ash as aggregates from the incineration of municipal solid waste (MSW), in partial and total substitution of natural aggregate. In addition, it has been studied the mechanical behaviour of the mortar and concrete matrix in the presence of MSWI aggre-gates. The use of MSWI bottom ash as an aggregate, results in a notable improvement of the resistance charac-teristics of conventional mortar and concrete, made out only of natural aggregate. Moreover, electrochemical measures show that the steels remain in passive state throughout all the exposure period (3 years).

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