RESEARCH OF BUILDING MATERIALS

Raising the biostability of wood by modifying its surface by boron-nitrogen compounds

Vestnik MGSU 11/2013
  • Stepina Irina Vasil'evna - Moscow State University of Civil Engineering (MGSU) Candidate of Technical Sciences, Associate Professor, Department of General Chemistry, Moscow State University of Civil Engineering (MGSU), Yaroslavskoye shosse, Moscow, 129337, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Kotlyarova Irina Aleksandrovna - Bryansk State Technical University (BGTU) Candidate of Technical Sciences, Associate Professor, Department of Materials Science and Engineering, Bryansk State Technical University (BGTU), 7, Bul'var 50-letiya Oktyabrya, Bryansk, 241035, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Sidorov Vyacheslav Ivanovich - Moscow State University of Civil Engineering (MGSU) Doctor of Chemical Sciences, Professor, Professor, Department of General Chemistry, Moscow State University of Civil Engineering (MGSU), 26 Yaroslavskoe shosse, 129337, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Myasoedov Evgeniy Mikhaylovich - Moscow State University of Mechanical Engineering (MAMI); Moscow State University of Civil Engineering (MGSU) Candidate of Chemical Sciences, Associate Professor, Department of General and Analytical Chemistry, Moscow State University of Mechanical Engineering (MAMI); Professor, Department of General Chemistry, Moscow State University of Civil Engineering (MGSU), Moscow State University of Mechanical Engineering (MAMI); Moscow State University of Civil Engineering (MGSU), 38 Bol’shaya Semenovskaya str., Moscow, 107023, Russian Federation; 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 149-154

The author studies the biological stability of pine wood samples modified by immersion for 3 hours in 10 %, 30 % and 50 % aqueous solutions of monoand diethanolamine (N → B) threehydrousborat (composition 1 and 2, respectively). After drying to constant weight, the surface of the samples according to the all-Union State Standard 9.048 was infested with a suspention with a concentration of 1—2 million / ml of fungic spores. The samples were placed into an open petri dish in a desiccator and maintained under conditions optimal for the growth of mycelium.During the experiment, the following results were obtained. Unmodified wood samples were covered with mushrooms at the 80—85 % of the surface. A rapid development of all kinds of test cultures and sporulation of the fungus was observed. The samples of wood, modified by the 10 % aqueous solutions of compounds 1 and 2, revealed heavy mycelium growth of mold and wood-destroying fungi. The development stage of fungi according to the All-Union State Standard 9.048—89 corresponds to 3 points. Wood samples, modified by 30 % aqueous solutions, are more fungus-resistant, their score is2 points. The modification by 50 % aqueous solutions of compounds 1 and 2 provides the wood with 100 % biological stability in regard to the mold and wood-destroying fungi.Climatic tests were carried out in the heat and moisture chamber G-4 according to All-Union State Standard 9.308—85 (Method 6) and 9.054—75 (method 1). Test results showed that due to such properties as weather resistance and fungal resistance, the protective action durability of the developed compositions makes up 5 years for 10 % solutions of compounds 1 and 2, up to 10 years for the 30 % solutions and for 50 % solutions — not less than 20 years. Thus, 50 % aqueous solutions of compositions 1 and 2 (Ksilostat and Ksilostat +) are the most effective for wood modification, which could provide the modified sample with 100 % biological stability for at least 20 years as a result of surface treatment.

DOI: 10.22227/1997-0935.2013.11.149-154

References
  1. Shupe T.S., Lebow S.T., Ring D. Causes and control of wood decay, degradation and stain. Res. & Ext. Pub, no. 2703, Zachary, LA, Louisiana State University Agricultural Center, 2008, 27 p.
  2. Mzhachikh E.I., Sukhareva L.A., Yakovlev V.V. Biokorroziya i fiziko-khimicheskie puti povysheniya dolgovechnosti pokrytiya [Biocorrosion and Physico-chemical Ways to Improve the Coating Durability]. Praktika protivokorrozionnoy zashchity [Experience of Anticorrosve Protection]. 2006, no. 1, pp. 55—58.
  3. Pokrovskaya E.N., Koval'chuk Yu.L. Khimiko-mikologicheskie issledovaniya i uluchshenie ekologii vnutri zdaniy [Chemical Analysis, Mycological Examination and Improvement of the Indoor Ecology]. Vestnik MGSU [Proceedings of Moscow State University of Civil Engineering]. 2012, no. 8, pp. 181—188.
  4. Lugauskas A., Yaskelyavichyus B. Mikologicheskoe sostoyanie zhilykh pomeshcheniy Bil'nyusa [Mycological State of the Accomodations in Bilnyusa]. Mikologiya i fitopatologiya [Mycology and Phytophathology]. 2009, vol. 43, no. 3, pp. 207—215.
  5. Dashko R.E., Kotyukov P.V. Issledovanie bioagressivnosti podzemnoy sredy Sankt-Peterburga po otnosheniyu k konstruktsionnym materialam transportnykh tonneley i fundamentov [The Study on the Bioagressiveness of the Underground Environment in St. Petersburg in Relation to Construction Materials of Transport Tunnels and Basements]. Zapiski Gornogo Instituta [Proceedings of the Mining Academy]. 2007, vol. 172, pp. 217—220.
  6. Kukoleva D.A., Akhmetshin A.S., Stroganov I.V., Stroganov V.F. Biopovrezhdenie polimernykh kompozitsionnykh stroitel'nykh materialov [Biodeterioration of Polymer Composite Building Materials]. Izvestiya Kazanskogo gosudarstvennogo arkhitekturno-stroitel'nogo universiteta [Proceedings of Kazan State University of Architecture and Engineering]. 2009, no. 2 (12), pp. 257—262.
  7. Lebow S.T. Wood Preservation. Wood Handbook: Wood as an Engineering Material. Gen. Tech. Rep. FPL–GTR–190. Madison, WI, U.S. Department of Agriculture, Forest Service, Forest Products Laboratory, 2010, chapter 15.
  8. Lebow S., Lebow P., Halverson S. Penetration of boron from topically applied borate solutions. Forest Products Journal. 2010, 60(1), pp. 13—22.
  9. Kotlyarova I.A., Koteneva I.V., Sidorov V.I. Modifikatsiya tsellyulozy monoetanolamin(N?B)trigidroksiboratom [Modification of Cellulose by Monoethanolamine(N?B) threehydrousborat]. Khimicheskaya promyshlennost' segodnya [Chemical Industry Today]. 2011, no. 12, pp. 26—30.
  10. Koteneva I.V., Sidorov V.I., Kotlyarov I.A. Analiz modifitsirovannoy tsellyulozy metodom IK-spektroskopii [Analysis of the Modified Cellulose by the Infrared Spectroscopy]. Khimiya rastitel'nogo syr'ya [Chemistry of Plant Materials]. 2011, no.1, pp. 21—24.

Download

Investigation of bioresistant dry building mixes modified by carbon nanotubes

Vestnik MGSU 4/2015
  • Suraeva Ekaterina Nikolaevna - Ogarev Mordovia State University (Ogarev MSU) external degree-seeking student, Department of Construction Materials and Technologies, Ogarev Mordovia State University (Ogarev MSU), 68 Bolshevistskaya Str., Saransk 430005, Republic of Mordovia, Russian Federation; +7 (8342) 47-40-19; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Erofeev Vladimir Trofimovich - Ogarev Mordovia State University (MGU im. Ogareva) Doctor of Technical Sciences, Professor, Chair, Department of Construction Materials and Technologies, dean, Department of Architecture and Construction, Ogarev Mordovia State University (MGU im. Ogareva), 68 Bol’shevistskaya str., Saransk, 430005, Russian Federation; +7 (8342) 47-40-19; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Korolev Evgeniy Valer'evich - Moscow State University of Civil Engineering (MGSU) Doctor of Technical Sciences, Professor, Adviser, Russian Academy of Architectural and Building Sciences (RAACS), director, Moscow State University of Civil Engineering (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation; +7-499-188-04-00; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 104-114

Dry construction mixes are today a product of high technologies. Depending on the purpose and requirements to the properties it is easy to produce dry construction mixes with different compositions and operating indicators in plant conditions using the necessary modifying additives. Cement, gypsum and other mineral binders are used in the construction mixes. Different types of cement are more heavily used in dry construction mixes. Such dry mixes are believed to be more effective materials comparing to traditional cement-sandy solutions of centralized preparation. The authors present the results of the investigations on obtaining biocidal cement-sand compositions. It was established, that introduction of sodium sulfate into the composition provides obtaining the materials with funginert and fungicide properties. The strength properties of the mixes modified by carbon nanotubes and biocide additive were investigated by mathematical planning methods. The results of the investigations showed that the modification of cement stone structure by carbon nanotubes positively influences their strength and technological properties. Nanomodifying of construction composites by introducing carbon nanotubes may be effectively used at different stages of structure formation of a construction material.

DOI: 10.22227/1997-0935.2015.4.104-114

References
  1. Kalashnikov V.I., Erofeev V.T., Moroz M.N., Troyanov I.Yu., Volodin V.M., Suzdal'tsev O.V. Nanogidrosilikatnye tekhnologii v proizvodstve betonov [Nanohydrosilicate Technologies in Producing Concretes]. Stroitel'nye materialy [Construction Materials]. 2014, no. 5, pp. 88—91. (In Russian)
  2. Meshcherin V., Katts M. Dobavki i dopolnitel'nye komponenty v sovremennoy tekhnologii proizvodstva [Additives and Additional Components in the Modern Production Technology]. CPI — Mezhdunarodnoe betonnoe proizvodstvo [CPI — International Concrete Production]. 2008, no. 6, pp. 42—48. (In Russian)
  3. Borman R., Fenling E. Ultrahochfester Beton-Entwicklung und Verhalten. Leipziger Massivbauseminar. 2000, Bd. 1, S. 1083—1091.
  4. Kleingelhöfer P. Neue Betonverflissiger auf Basis Policarboxilat. Proc. 13. Jbasil Weimar. 1997, Bd. 1, S. 491—495.
  5. Dallaire E., Bonnean O., Lachemi M., Aitsin P. Mechanical Behavior of Confined Reactive Powder Concrete. American Society of Civil Engineers, Materials of the Engineering Conference. Washington DC, November 1996, vol. 1, pp. 555—563.
  6. Andreyuk E.I., Kozlova I.A., Kopte-va Zh.P. Mikrobnaya korroziya podzemnykh sooruzheniy [Microbial Corrosion of Underground Structures]. Biopovrezhdeniya i biokorroziya v stroitel'stve : materialy II Mezhdunarodnoy nauchno-tekhnicheskoy konferentsii [Biodamages and Biocorrosion in the Construction : Materials of the II International Science and Technical Conference]. Saransk, 2006, pp. 79—99. (In Russian)
  7. Antonov V.B. Vliyanie biopovrezhdeniy zdaniy i sooruzheniy na zdorov'e cheloveka [Influence of Biodamages of Buildings and Structures on Human Health]. Biopovrezhdeniya i biokorroziya v stroitel'stve : materialy II Mezhdunarodnoy nauchno-tekhnicheskoy konferentsii [Biodamages and Biocorrosion in the Construction : Materials of the II International Science and Technical Conference]. Saransk, 2006, pp. 238—242. (In Russian)
  8. Erofeev V.T., Kaznacheev S.V., Bogatov A.D., Spirin V.A., Svetlov D.A. Biotsidnye tsementnye kompozity s dobavkami, soderzhashchimi guanidin [Biocide Cement Composites with Additives Containing Aminoethanamidine]. Privolzhskiy nauchnyy zhurnal [Volga Region Scientific Journal]. 2010, no. 4, pp. 87—94. (In Russian)
  9. Pokrovskaya E.N., Koteneva I.V. Biopovrezhdeniya istoricheskikh pamyatnikov [Biodamages of Historical Monuments]. Biopovrezhdeniya i biokorroziya v stroitel'stve : materialy II Mezhdunarodnoy nauchno-tekhnicheskoy konferentsii [Biodamages and Biocorrosion in the Construction : Materials of the II International Science and Technical Conference]. Saransk, 2004, pp. 245—248. (In Russian)
  10. Ivanov F.M. Biokorroziya neorganicheskikh stroitel'nykh materialov [Biocorrosion of Nonorganic Construction Materials]. Biopovrezhdeniya v stroitel'stve : sbornik nauchnykh trudov [Biodamages in Construction : Collection of Scientific Works]. Moscow, Stroyizdat Publ., 1984, pp. 183—188. (In Russian)
  11. Videla H.A., Herrera L.K. Microbiologically Influenced Corrosion: Looking to the Future. International Microbiology. 2005, no. 8 (3), pp. 169—180.
  12. Ramesh Babu B., Maruthamuthu S., Rajasekar A. Microbiologically Influenced Corrosion in Dairy Effluent. International Journal of Environmental Science & Technology. 2006, vol. 3, no. 2, pp. 159—166. DOI: http://dx.doi.org/10.1007/BF03325920.
  13. Yudovich M.E., Ponomarev A.N. Nanomodifikatsiya plastifikatorov. Regulirovanie ikh svoystv i prochnostnykh kharakteristik litykh betonov [Nanomodification of Plastifiers. Regulation of their Properties and the Strength Characteristics of Liquid Concretes]. StroyPROFIl' [Construction Profile]. 2007, no. 6, pp. 49—51. (In Russian)
  14. Eletskiy A.V. Uglerodnye nanotrubki [Carbon Nanotubes]. Uspekhi fizicheskikh nauk [Advances of Physical Sciences]. 1997, vol. 167, no. 9, pp. 945—972. (In Russian)
  15. Bazhenov Yu.M., Falikman V.R., Bulgakov B.I. Nanomaterialy i nanotekhnologii v sovremennoy tekhnologii betonov [Nanomaterials and Nanotechnologies in the Present-day Concrete Technology]. Vestnik MGSU [Proceedings of Moscow State University of Civil Engineering]. 2012, no. 12, pp. 125—133. (In Russian)
  16. Kalashnikov V.I., Erofeev V.T., Moroz M.N.,Troyanov I.Yu., Volodin V.M., Suzdal'tsev O.V. Nanogidrosilikatnye tekhnologii v proizvodstve betonov [Nanohydrosilicate Technologies in Concrete Production]. Stroitel'nye materialy [Construction Materials]. 2014, no. 5, pp. 89—91. (In Russian)
  17. Harrison B.S., Atala A. Carbon Nanotube Application for Tissue Engineering. Biomaterials. 2007, no. 28 (II), pp. 344—353. DOI: http://dx.doi.org/10.1016/j.biomaterials.2006.07.044.
  18. Zanello L.P., Zhao B., Hu H., Haddon R.C. Bone Cell Proliferation on Carbon Nanotubes. Nano Lett. 2006, no. 6 (III), pp. 562—567. DOI: http://dx.doi.org/10.1021/nl051861e.
  19. Smart S.K., Cassady A.I., Lu G.Q., Martin D.J. The Biocompatibility of Carbon Nanotubes. Carbon. 2006, vol. 44, no. 6, pp. 1034—1047. DOI: http://dx.doi.org/10.1016/j.carbon.2005.10.011.
  20. Korolev E.V. Nanotekhnologiya v stroitel'nom materialovedenii. Analiz sostoyaniya i dostizheniy. Puti razvitiya [Nanotechnology in Construction Material Science. Analysis of the State and Achievements]. Stroitel'nye materialy [Construction Materials]. 2014, no. 11, pp. 47—79. (In Russian)

Download

Results 1 - 2 of 2