Influence of microstructure on fluid transport and mechanical properties in structural concrete produced with lightweight clay aggregates

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Title: Influence of microstructure on fluid transport and mechanical properties in structural concrete produced with lightweight clay aggregates
Authors: Pla, Concepción | Tenza-Abril, Antonio José | Valdes-Abellan, Javier | Benavente, David
Research Group/s: Ingeniería Hidráulica y Ambiental (IngHA) | Petrología Aplicada | Tecnología de Materiales y Territorio (TECMATER)
Center, Department or Service: Universidad de Alicante. Departamento de Ingeniería Civil | Universidad de Alicante. Departamento de Ciencias de la Tierra y del Medio Ambiente
Keywords: Lightweight concrete | Permeability | Sorptivity | Porous system | Clayed aggregates
Knowledge Area: Ingeniería Hidráulica | Ingeniería de la Construcción | Petrología y Geoquímica
Issue Date: 20-May-2018
Publisher: Elsevier
Citation: Construction and Building Materials. 2018, 171: 388-396. doi:10.1016/j.conbuildmat.2018.03.135
Abstract: The use of lightweight aggregates (LWA) in concrete is an interesting alternative to simultaneously reduce the total structure weight and provide both appropriate resistance and concrete’s performance. This paper studies the influence of LWA on concrete, comparing the changes in the mechanical properties, pore structure and fluid transport related to the increase of LWA content. Results reveal that although LWA reduces the mechanical properties of the studied samples does not significantly affect the fluid transport properties. Total porosity rises with LWA content whereas open porosity remains nearly invariable. LWA pores do not totally participate in the fluid transport through the concrete and, consequently, fluid transport through lightweight concrete is limited by the continuity and accessibility of the LWA pores and is dominated by the properties of the mortar matrix.
Sponsor: This research was partially funded by the University of Alicante – Spain through the projects GRE13-03, GRE15-19 and VIGROB-256.
ISSN: 0950-0618 (Print) | 1879-0526 (Online)
DOI: 10.1016/j.conbuildmat.2018.03.135
Language: eng
Type: info:eu-repo/semantics/article
Rights: © 2018 Elsevier Ltd.
Peer Review: si
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Appears in Collections:INV - IngHA - Artículos de Revistas
INV - PETRA - Artículos de Revistas
INV - TECMATER - Artículos de Revistas

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