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Aging of lime-based TRM composites under natural environmental conditions

Dalalbashi, Ali; Ghiassi, Bahman; Oliveira, Daniel V.

Authors

Ali Dalalbashi

BAHMAN GHIASSI BAHMAN.GHIASSI@NOTTINGHAM.AC.UK
Assistant Professor in Structural Engineering

Daniel V. Oliveira



Abstract

Textile-reinforced mortar (TRM) composites, composed of textile fibers embedded in an inorganic matrix, have been found to be a sustainable solution for strengthening of existing masonry and concrete structures. Despite the extensive recent attention in understanding the mechanical performance of these composite, their long-term performance and durability remain basically unknown. To address this gap, this paper presents a comprehensive experimental and analytical study on the changes in the mechanical response of these composites across scales (from material characterization to bond and tensile tests of TRM composites) under indoor and outdoor conditions. For this purpose, steel and glass fibers with lime-based mortar are used to investigate the pull-out response and the tensile behavior of TRM composites. The results show that the long-term behavior of TRM composites for different ages is significantly dependent on the mortar and fiber combination and, therefore, can change notably between different TRM solutions. It is also observed that lime-based TRMs cannot reach their full mechanical properties under indoor conditions even after 3 years. Outdoor conditions lead to better curing of the samples and achieving significantly higher mechanical properties in these composites. However, it can also lead to a significant deterioration at later ages.

Citation

Dalalbashi, A., Ghiassi, B., & Oliveira, D. V. (2021). Aging of lime-based TRM composites under natural environmental conditions. Construction and Building Materials, 270, https://doi.org/10.1016/j.conbuildmat.2020.121853

Journal Article Type Article
Acceptance Date Nov 25, 2020
Online Publication Date Dec 11, 2020
Publication Date Feb 8, 2021
Deposit Date Mar 17, 2021
Publicly Available Date Dec 12, 2021
Journal Construction and Building Materials
Print ISSN 0950-0618
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 270
Article Number 121853
DOI https://doi.org/10.1016/j.conbuildmat.2020.121853
Keywords General Materials Science; Civil and Structural Engineering; Building and Construction
Public URL https://nottingham-repository.worktribe.com/output/5399233
Publisher URL https://www.sciencedirect.com/science/article/abs/pii/S0950061820338575?via%3Dihub
Additional Information This article is maintained by: Elsevier; Article Title: Aging of lime-based TRM composites under natural environmental conditions; Journal Title: Construction and Building Materials; CrossRef DOI link to publisher maintained version: https://doi.org/10.1016/j.conbuildmat.2020.121853; Content Type: article; Copyright: © 2020 Elsevier Ltd. All rights reserved.