Increase of strength of partially destroyed wood of monuments of wooden architecture
Introduction. Monuments of wooden architecture - an invaluable part of the national culture, they reflect the originality and independence of the national architecture. The problem of preservation of monuments of wooden architecture with the passage of time is becoming increasingly important. Many m...
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ftdoajarticles:oai:doaj.org/article:bbe913d62a474bd189f0920fc069c614 2023-05-15T15:23:47+02:00 Increase of strength of partially destroyed wood of monuments of wooden architecture Pokrovskaya Elena N. 2018-12-01T00:00:00Z https://doi.org/10.22227/1997-0935.2018.11.1305-1314 https://doaj.org/article/bbe913d62a474bd189f0920fc069c614 EN RU eng rus Moscow State University of Civil Engineering (MGSU) http://vestnikmgsu.ru/index.php/archive/article/download/4589 https://doaj.org/toc/1997-0935 1997-0935 doi:10.22227/1997-0935.2018.11.1305-1314 https://doaj.org/article/bbe913d62a474bd189f0920fc069c614 Vestnik MGSU, Iss 11, Pp 1305-1314 (2018) monument of wooden architecture surface modification covalent bond nitrilotrimethylphosphonic acid epoxy resin strength fire resistance water absorption durability Architecture NA1-9428 Construction industry HD9715-9717.5 article 2018 ftdoajarticles https://doi.org/10.22227/1997-0935.2018.11.1305-1314 2022-12-31T08:34:49Z Introduction. Monuments of wooden architecture - an invaluable part of the national culture, they reflect the originality and independence of the national architecture. The problem of preservation of monuments of wooden architecture with the passage of time is becoming increasingly important. Many monuments were burned; some were destroyed due to the loss of structural strength under the influence of humidity, biodestruction, etc. Materials and methods. The samples of partially destroyed wood of the Anglican Church of the city of Arkhangelsk, built in 1833, were studied. The samples were subjected to surface modification with the formation of a two-layer sandwich coating, the first layer of which was various phosphorus-containing flame retardants, and the second layer - polymer composites. As polymer composites, glue based on epoxy resin and polyurethane composition “Akvidur TT” were used. The reactive organophosphorus compounds, capable of forming covalent bonds with wood polymers in the surface layer of partially destroyed wood, were chosen as flame retardants. Modified samples were subjected to physicochemical studies to determine the strength, fire resistance, hydrophobicity. The strength of the modified samples was compared with the strength of the untreated samples of partially destroyed wood of the Anglican Church of Arkhangelsk. The appearance of covalent bonds between the wood and the modifier was determined by Fourier-transform spectroscopy. Results. Surface modification of the samples of the monument increased the strength of wood by 2-2.5 times, reduced water absorption by 3 times, reduced the loss of mass during combustion according to GOST 27484-87 to 5.0-6.4 %. Conclusions. The study solves the urgent problem of preservation of monuments of wooden architecture by increasing the strength of partially destroyed wood, as well as giving it fire resistance, hydrophobicity and biostability in carrying out restoration work. Article in Journal/Newspaper Arkhangelsk Directory of Open Access Journals: DOAJ Articles The Monument ENVELOPE(162.250,162.250,-72.583,-72.583) Vestnik MGSU 11 1305 1314 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English Russian |
topic |
monument of wooden architecture surface modification covalent bond nitrilotrimethylphosphonic acid epoxy resin strength fire resistance water absorption durability Architecture NA1-9428 Construction industry HD9715-9717.5 |
spellingShingle |
monument of wooden architecture surface modification covalent bond nitrilotrimethylphosphonic acid epoxy resin strength fire resistance water absorption durability Architecture NA1-9428 Construction industry HD9715-9717.5 Pokrovskaya Elena N. Increase of strength of partially destroyed wood of monuments of wooden architecture |
topic_facet |
monument of wooden architecture surface modification covalent bond nitrilotrimethylphosphonic acid epoxy resin strength fire resistance water absorption durability Architecture NA1-9428 Construction industry HD9715-9717.5 |
description |
Introduction. Monuments of wooden architecture - an invaluable part of the national culture, they reflect the originality and independence of the national architecture. The problem of preservation of monuments of wooden architecture with the passage of time is becoming increasingly important. Many monuments were burned; some were destroyed due to the loss of structural strength under the influence of humidity, biodestruction, etc. Materials and methods. The samples of partially destroyed wood of the Anglican Church of the city of Arkhangelsk, built in 1833, were studied. The samples were subjected to surface modification with the formation of a two-layer sandwich coating, the first layer of which was various phosphorus-containing flame retardants, and the second layer - polymer composites. As polymer composites, glue based on epoxy resin and polyurethane composition “Akvidur TT” were used. The reactive organophosphorus compounds, capable of forming covalent bonds with wood polymers in the surface layer of partially destroyed wood, were chosen as flame retardants. Modified samples were subjected to physicochemical studies to determine the strength, fire resistance, hydrophobicity. The strength of the modified samples was compared with the strength of the untreated samples of partially destroyed wood of the Anglican Church of Arkhangelsk. The appearance of covalent bonds between the wood and the modifier was determined by Fourier-transform spectroscopy. Results. Surface modification of the samples of the monument increased the strength of wood by 2-2.5 times, reduced water absorption by 3 times, reduced the loss of mass during combustion according to GOST 27484-87 to 5.0-6.4 %. Conclusions. The study solves the urgent problem of preservation of monuments of wooden architecture by increasing the strength of partially destroyed wood, as well as giving it fire resistance, hydrophobicity and biostability in carrying out restoration work. |
format |
Article in Journal/Newspaper |
author |
Pokrovskaya Elena N. |
author_facet |
Pokrovskaya Elena N. |
author_sort |
Pokrovskaya Elena N. |
title |
Increase of strength of partially destroyed wood of monuments of wooden architecture |
title_short |
Increase of strength of partially destroyed wood of monuments of wooden architecture |
title_full |
Increase of strength of partially destroyed wood of monuments of wooden architecture |
title_fullStr |
Increase of strength of partially destroyed wood of monuments of wooden architecture |
title_full_unstemmed |
Increase of strength of partially destroyed wood of monuments of wooden architecture |
title_sort |
increase of strength of partially destroyed wood of monuments of wooden architecture |
publisher |
Moscow State University of Civil Engineering (MGSU) |
publishDate |
2018 |
url |
https://doi.org/10.22227/1997-0935.2018.11.1305-1314 https://doaj.org/article/bbe913d62a474bd189f0920fc069c614 |
long_lat |
ENVELOPE(162.250,162.250,-72.583,-72.583) |
geographic |
The Monument |
geographic_facet |
The Monument |
genre |
Arkhangelsk |
genre_facet |
Arkhangelsk |
op_source |
Vestnik MGSU, Iss 11, Pp 1305-1314 (2018) |
op_relation |
http://vestnikmgsu.ru/index.php/archive/article/download/4589 https://doaj.org/toc/1997-0935 1997-0935 doi:10.22227/1997-0935.2018.11.1305-1314 https://doaj.org/article/bbe913d62a474bd189f0920fc069c614 |
op_doi |
https://doi.org/10.22227/1997-0935.2018.11.1305-1314 |
container_title |
Vestnik MGSU |
container_issue |
11 |
container_start_page |
1305 |
op_container_end_page |
1314 |
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