Assessment of Extremely Cold Subarctic Climate Environment Destruction of the Basalt Fiber Reinforced Epoxy (BFRE) Rebar Using Its Moisture Uptake Kinetics
A quite simple method is proposed for the assessment of extremely cold subarctic climate environment destruction of the basalt fiber reinforced epoxy (BFRE) rebar. The method involves the comparison of experimentally obtained long-term moisture uptake kinetic curves of unexposed and exposed BFRP reb...
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MDPI AG
2021
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Online Access: | https://doi.org/10.3390/polym13244325 https://doaj.org/article/cf480afb616f465bb3c6ab0bf3e00caf |
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ftdoajarticles:oai:doaj.org/article:cf480afb616f465bb3c6ab0bf3e00caf 2023-05-15T18:28:14+02:00 Assessment of Extremely Cold Subarctic Climate Environment Destruction of the Basalt Fiber Reinforced Epoxy (BFRE) Rebar Using Its Moisture Uptake Kinetics Anatoly K. Kychkin Anna A. Gavrilieva Alina A. Vasilieva Aisen A. Kychkin Mikhail P. Lebedev Anastasia V. Sivtseva 2021-12-01T00:00:00Z https://doi.org/10.3390/polym13244325 https://doaj.org/article/cf480afb616f465bb3c6ab0bf3e00caf EN eng MDPI AG https://www.mdpi.com/2073-4360/13/24/4325 https://doaj.org/toc/2073-4360 doi:10.3390/polym13244325 2073-4360 https://doaj.org/article/cf480afb616f465bb3c6ab0bf3e00caf Polymers, Vol 13, Iss 4325, p 4325 (2021) destruction cold climate epoxy binder basalt fiber BFRP rebar Organic chemistry QD241-441 article 2021 ftdoajarticles https://doi.org/10.3390/polym13244325 2022-12-31T12:38:59Z A quite simple method is proposed for the assessment of extremely cold subarctic climate environment destruction of the basalt fiber reinforced epoxy (BFRE) rebar. The method involves the comparison of experimentally obtained long-term moisture uptake kinetic curves of unexposed and exposed BFRP rebars. A moisture uptake test was carried out at the temperature of 60 °C and relative humidity of 98 ± 2% for 306 days. The plasticization can be neglected because of low-level moisture saturation (<0.41% wt.); the swelling and structural relaxation of the polymer network can be neglected due to the high fiber content of BFRP rebar; moisture diffusion into the basalt fibers can be neglected since it is a much lesser amount than in the epoxy binder. These assumptions made it possible to build a three-stage diffusion model. It is observed that an increase in the density of defects with an increase in the diameter of the BFRP rebar is the result of the technology of manufacturing a periodic profile. The diffusion coefficient of the BFRP rebar with a 6, 10, or 18 mm diameter increased at an average of 82.7%, 56.7%, and 30%, respectively, after exposure to the climate of Yakutsk during 28 months, whereas it was known that the strength indicators had been increased. Article in Journal/Newspaper Subarctic Yakutsk Directory of Open Access Journals: DOAJ Articles Yakutsk Polymers 13 24 4325 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
destruction cold climate epoxy binder basalt fiber BFRP rebar Organic chemistry QD241-441 |
spellingShingle |
destruction cold climate epoxy binder basalt fiber BFRP rebar Organic chemistry QD241-441 Anatoly K. Kychkin Anna A. Gavrilieva Alina A. Vasilieva Aisen A. Kychkin Mikhail P. Lebedev Anastasia V. Sivtseva Assessment of Extremely Cold Subarctic Climate Environment Destruction of the Basalt Fiber Reinforced Epoxy (BFRE) Rebar Using Its Moisture Uptake Kinetics |
topic_facet |
destruction cold climate epoxy binder basalt fiber BFRP rebar Organic chemistry QD241-441 |
description |
A quite simple method is proposed for the assessment of extremely cold subarctic climate environment destruction of the basalt fiber reinforced epoxy (BFRE) rebar. The method involves the comparison of experimentally obtained long-term moisture uptake kinetic curves of unexposed and exposed BFRP rebars. A moisture uptake test was carried out at the temperature of 60 °C and relative humidity of 98 ± 2% for 306 days. The plasticization can be neglected because of low-level moisture saturation (<0.41% wt.); the swelling and structural relaxation of the polymer network can be neglected due to the high fiber content of BFRP rebar; moisture diffusion into the basalt fibers can be neglected since it is a much lesser amount than in the epoxy binder. These assumptions made it possible to build a three-stage diffusion model. It is observed that an increase in the density of defects with an increase in the diameter of the BFRP rebar is the result of the technology of manufacturing a periodic profile. The diffusion coefficient of the BFRP rebar with a 6, 10, or 18 mm diameter increased at an average of 82.7%, 56.7%, and 30%, respectively, after exposure to the climate of Yakutsk during 28 months, whereas it was known that the strength indicators had been increased. |
format |
Article in Journal/Newspaper |
author |
Anatoly K. Kychkin Anna A. Gavrilieva Alina A. Vasilieva Aisen A. Kychkin Mikhail P. Lebedev Anastasia V. Sivtseva |
author_facet |
Anatoly K. Kychkin Anna A. Gavrilieva Alina A. Vasilieva Aisen A. Kychkin Mikhail P. Lebedev Anastasia V. Sivtseva |
author_sort |
Anatoly K. Kychkin |
title |
Assessment of Extremely Cold Subarctic Climate Environment Destruction of the Basalt Fiber Reinforced Epoxy (BFRE) Rebar Using Its Moisture Uptake Kinetics |
title_short |
Assessment of Extremely Cold Subarctic Climate Environment Destruction of the Basalt Fiber Reinforced Epoxy (BFRE) Rebar Using Its Moisture Uptake Kinetics |
title_full |
Assessment of Extremely Cold Subarctic Climate Environment Destruction of the Basalt Fiber Reinforced Epoxy (BFRE) Rebar Using Its Moisture Uptake Kinetics |
title_fullStr |
Assessment of Extremely Cold Subarctic Climate Environment Destruction of the Basalt Fiber Reinforced Epoxy (BFRE) Rebar Using Its Moisture Uptake Kinetics |
title_full_unstemmed |
Assessment of Extremely Cold Subarctic Climate Environment Destruction of the Basalt Fiber Reinforced Epoxy (BFRE) Rebar Using Its Moisture Uptake Kinetics |
title_sort |
assessment of extremely cold subarctic climate environment destruction of the basalt fiber reinforced epoxy (bfre) rebar using its moisture uptake kinetics |
publisher |
MDPI AG |
publishDate |
2021 |
url |
https://doi.org/10.3390/polym13244325 https://doaj.org/article/cf480afb616f465bb3c6ab0bf3e00caf |
geographic |
Yakutsk |
geographic_facet |
Yakutsk |
genre |
Subarctic Yakutsk |
genre_facet |
Subarctic Yakutsk |
op_source |
Polymers, Vol 13, Iss 4325, p 4325 (2021) |
op_relation |
https://www.mdpi.com/2073-4360/13/24/4325 https://doaj.org/toc/2073-4360 doi:10.3390/polym13244325 2073-4360 https://doaj.org/article/cf480afb616f465bb3c6ab0bf3e00caf |
op_doi |
https://doi.org/10.3390/polym13244325 |
container_title |
Polymers |
container_volume |
13 |
container_issue |
24 |
container_start_page |
4325 |
_version_ |
1766210627117776896 |