Textile-reinforced mortar: Durability in salty environment

Amr Alatawna; Lior Nahum; Raghu Sripada; Matan Birenboim; Oren Regev; Alva Peled

doi:https://doi.org/10.1016/j.cemconcomp.2022.104534

Textile-reinforced mortar: Durability in salty environment

Amr Alatawna, Lior Nahum, Raghu Sripada, Matan Birenboim, Oren Regev, Alva Peled

Ben-Gurion University of the Negev

Research output: Contribution to journal › Article › peer-review

Abstract

Reinforcing a fine-grained cement-based matrix with a textile fabric is an emerging approach in civil engineering, termed Textile Reinforced Mortar (TRM). We propose to load the ultra-high-performance matrix with nano-additives, i.e., a crystalline admixture (CA) or CA plus alumina nanofibers. The mix was designed to yield flow values - in the fresh state - suitable for retrofitting, and to provide high compressive strength. Examination of the durability of the TRM elements exposed to salty environments unexpectedly showed enhanced tensile strength (<81%). This is owing to the growth of salt crystals at the matrix–textile interface resulting in stronger bond strength, as imaged by scanning electron microscopy, identified by acoustic emission measurements, and validated by pull-off tests.

Original language	American English
Article number	104534
Journal	Cement and Concrete Composites
Volume	130
DOIs	https://doi.org/10.1016/j.cemconcomp.2022.104534
State	Published - 1 Jul 2022

Keywords

Acoustic emission
Cement composites
Chloride condition
Crystals admixture
Durability
Textile reinforced mortar

All Science Journal Classification (ASJC) codes

Building and Construction
General Materials Science

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https://doi.org/10.1016/j.cemconcomp.2022.104534

Cite this

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title = "Textile-reinforced mortar: Durability in salty environment",

abstract = "Reinforcing a fine-grained cement-based matrix with a textile fabric is an emerging approach in civil engineering, termed Textile Reinforced Mortar (TRM). We propose to load the ultra-high-performance matrix with nano-additives, i.e., a crystalline admixture (CA) or CA plus alumina nanofibers. The mix was designed to yield flow values - in the fresh state - suitable for retrofitting, and to provide high compressive strength. Examination of the durability of the TRM elements exposed to salty environments unexpectedly showed enhanced tensile strength (<81%). This is owing to the growth of salt crystals at the matrix–textile interface resulting in stronger bond strength, as imaged by scanning electron microscopy, identified by acoustic emission measurements, and validated by pull-off tests.",

keywords = "Acoustic emission, Cement composites, Chloride condition, Crystals admixture, Durability, Textile reinforced mortar",

author = "Amr Alatawna and Lior Nahum and Raghu Sripada and Matan Birenboim and Oren Regev and Alva Peled",

note = "Funding Information: The authors would like to acknowledge The Eduardo Torroja Institute for Construction Sciences (IETCC), Madrid, Spain for conducting the Mercury Intrusion Porosimetry tests. Funding Information: This work was supported by the ReSHEALience project (rethinking coastal defence and green energy service infrastructures through en h anc e d-dur a bi l ity high-performance cement-based materials) of the European Union's Horizon 2020 Research and Innovation Program under grant agreement No 760824 and by the Israel Science Foundation (ISF, grant 1106/17 to AP and OR). The information and views set out in this publication do not necessarily reflect the official opinion of the European Commission. Publisher Copyright: {\textcopyright} 2022",

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doi = "https://doi.org/10.1016/j.cemconcomp.2022.104534",

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AU - Alatawna, Amr

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AU - Sripada, Raghu

AU - Birenboim, Matan

AU - Regev, Oren

AU - Peled, Alva

N1 - Funding Information: The authors would like to acknowledge The Eduardo Torroja Institute for Construction Sciences (IETCC), Madrid, Spain for conducting the Mercury Intrusion Porosimetry tests. Funding Information: This work was supported by the ReSHEALience project (rethinking coastal defence and green energy service infrastructures through en h anc e d-dur a bi l ity high-performance cement-based materials) of the European Union's Horizon 2020 Research and Innovation Program under grant agreement No 760824 and by the Israel Science Foundation (ISF, grant 1106/17 to AP and OR). The information and views set out in this publication do not necessarily reflect the official opinion of the European Commission. Publisher Copyright: © 2022

PY - 2022/7/1

Y1 - 2022/7/1

N2 - Reinforcing a fine-grained cement-based matrix with a textile fabric is an emerging approach in civil engineering, termed Textile Reinforced Mortar (TRM). We propose to load the ultra-high-performance matrix with nano-additives, i.e., a crystalline admixture (CA) or CA plus alumina nanofibers. The mix was designed to yield flow values - in the fresh state - suitable for retrofitting, and to provide high compressive strength. Examination of the durability of the TRM elements exposed to salty environments unexpectedly showed enhanced tensile strength (<81%). This is owing to the growth of salt crystals at the matrix–textile interface resulting in stronger bond strength, as imaged by scanning electron microscopy, identified by acoustic emission measurements, and validated by pull-off tests.

AB - Reinforcing a fine-grained cement-based matrix with a textile fabric is an emerging approach in civil engineering, termed Textile Reinforced Mortar (TRM). We propose to load the ultra-high-performance matrix with nano-additives, i.e., a crystalline admixture (CA) or CA plus alumina nanofibers. The mix was designed to yield flow values - in the fresh state - suitable for retrofitting, and to provide high compressive strength. Examination of the durability of the TRM elements exposed to salty environments unexpectedly showed enhanced tensile strength (<81%). This is owing to the growth of salt crystals at the matrix–textile interface resulting in stronger bond strength, as imaged by scanning electron microscopy, identified by acoustic emission measurements, and validated by pull-off tests.

KW - Acoustic emission

KW - Cement composites

KW - Chloride condition

KW - Crystals admixture

KW - Durability

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Textile-reinforced mortar: Durability in salty environment

Abstract

Keywords

All Science Journal Classification (ASJC) codes

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