The Effect of Elevated Temperatures on the TRM-to-Masonry Bond: Comparison of Normal Weight and Lightweight Matrices
Textile Reinforced Mortar (TRM) is a composite material that has already been successfully used as an externally bonded strengthening means of existing structures. The bond of TRM with various substrates is of crucial importance for determining the degree of exploitation of the textile. However, lit...
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| Format: | Article |
| Language: | English |
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MDPI AG
2019-05-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/9/10/2156 |
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| author | Paraskevi D. Askouni Catherine (Corina) G. Papanicolaou Michael I. Kaffetzakis |
| author_facet | Paraskevi D. Askouni Catherine (Corina) G. Papanicolaou Michael I. Kaffetzakis |
| author_sort | Paraskevi D. Askouni |
| collection | DOAJ |
| description | Textile Reinforced Mortar (TRM) is a composite material that has already been successfully used as an externally bonded strengthening means of existing structures. The bond of TRM with various substrates is of crucial importance for determining the degree of exploitation of the textile. However, little is known on the effect of elevated/high temperatures on the TRM-to-substrate bond characteristics while relevant testing protocols are also lacking. This study focuses on the experimental assessment of the TRM-to-masonry bond after exposure of masonry wallettes unilaterally furnished with TRM strips at 120 °C and 200 °C for 1 h. The shear bond tests on cooled-down specimens were carried out using the single-lap/single-prism set-up. Two TRM systems were investigated sharing the same type of textile, which is a dry AR glass fiber one (either in a single-layer or in a double-layer configuration) and different matrices: one normal weight (TRNM) and another lightweight (TRLM) of equal compressive strengths. At control conditions (non-heated specimens) and after exposure at a nominal air temperature of 120 °C, both single-layer TRM systems exhibited similar bond capacities. After exposure at a nominal air temperature of 200 °C single-layer and double-layer TRNM overlays outperformed their TRLM counterparts. A critical discussion is based on phenomenological evidence and measured response values. |
| first_indexed | 2024-12-20T17:27:21Z |
| format | Article |
| id | doaj.art-8eb9351453464c5f99f773ecdd1948a1 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-12-20T17:27:21Z |
| publishDate | 2019-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-8eb9351453464c5f99f773ecdd1948a12022-12-21T19:31:30ZengMDPI AGApplied Sciences2076-34172019-05-01910215610.3390/app9102156app9102156The Effect of Elevated Temperatures on the TRM-to-Masonry Bond: Comparison of Normal Weight and Lightweight MatricesParaskevi D. Askouni0Catherine (Corina) G. Papanicolaou1Michael I. Kaffetzakis2Structural Materials Laboratory, Department of Civil Engineering, University of Patras, 26504 Rio, GreeceStructural Materials Laboratory, Department of Civil Engineering, University of Patras, 26504 Rio, GreeceStructural Materials Laboratory, Department of Civil Engineering, University of Patras, 26504 Rio, GreeceTextile Reinforced Mortar (TRM) is a composite material that has already been successfully used as an externally bonded strengthening means of existing structures. The bond of TRM with various substrates is of crucial importance for determining the degree of exploitation of the textile. However, little is known on the effect of elevated/high temperatures on the TRM-to-substrate bond characteristics while relevant testing protocols are also lacking. This study focuses on the experimental assessment of the TRM-to-masonry bond after exposure of masonry wallettes unilaterally furnished with TRM strips at 120 °C and 200 °C for 1 h. The shear bond tests on cooled-down specimens were carried out using the single-lap/single-prism set-up. Two TRM systems were investigated sharing the same type of textile, which is a dry AR glass fiber one (either in a single-layer or in a double-layer configuration) and different matrices: one normal weight (TRNM) and another lightweight (TRLM) of equal compressive strengths. At control conditions (non-heated specimens) and after exposure at a nominal air temperature of 120 °C, both single-layer TRM systems exhibited similar bond capacities. After exposure at a nominal air temperature of 200 °C single-layer and double-layer TRNM overlays outperformed their TRLM counterparts. A critical discussion is based on phenomenological evidence and measured response values.https://www.mdpi.com/2076-3417/9/10/2156textile reinforced mortarbondmasonrynormal weight/lightweight aggregateselevated temperatures |
| spellingShingle | Paraskevi D. Askouni Catherine (Corina) G. Papanicolaou Michael I. Kaffetzakis The Effect of Elevated Temperatures on the TRM-to-Masonry Bond: Comparison of Normal Weight and Lightweight Matrices Applied Sciences textile reinforced mortar bond masonry normal weight/lightweight aggregates elevated temperatures |
| title | The Effect of Elevated Temperatures on the TRM-to-Masonry Bond: Comparison of Normal Weight and Lightweight Matrices |
| title_full | The Effect of Elevated Temperatures on the TRM-to-Masonry Bond: Comparison of Normal Weight and Lightweight Matrices |
| title_fullStr | The Effect of Elevated Temperatures on the TRM-to-Masonry Bond: Comparison of Normal Weight and Lightweight Matrices |
| title_full_unstemmed | The Effect of Elevated Temperatures on the TRM-to-Masonry Bond: Comparison of Normal Weight and Lightweight Matrices |
| title_short | The Effect of Elevated Temperatures on the TRM-to-Masonry Bond: Comparison of Normal Weight and Lightweight Matrices |
| title_sort | effect of elevated temperatures on the trm to masonry bond comparison of normal weight and lightweight matrices |
| topic | textile reinforced mortar bond masonry normal weight/lightweight aggregates elevated temperatures |
| url | https://www.mdpi.com/2076-3417/9/10/2156 |
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