Hydrophobic Modifiers for Restoration of Old Wooden Buildings in Western Siberia

Krutasov, Boris V.; Ylesin, Mikhail A.; Mashin, Nikolay A.; Dubrov, Dmitry V.

doi:10.4028/www.scientific.net/kem.771.43

Cited by 3 publications

(2 citation statements)

References 2 publications

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“…Composite materials are distinguished by the absence of wood defects and the greater resistance to warping, curliness, and other defects inherent in solid wood products [4]. The creation of new composite products follows market differentiation and filling specific market niches [5][6][7][8]. For example, in Russia, for many years, comprehensive studies of glued wooden reinforced structures have been carried out; new types of them have been developed and implemented in industry [9,10].…”

Section: Introductionmentioning

confidence: 99%

Multi-Span Composite Timber Beams with Rational Steel Reinforcements

et al. 2021

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Wooden multi-span beams with steel reinforcement were studied experimentally on a stationary stand using an eight-point loading scheme that simulated a load uniformly distributed over the beam span. The studies were carried out on beams with a span of 4.8 m with a cross-sectional area of 40 mm × 80 mm, reinforced in the stretched zones of the cross-section with rods made of hot-rolled steel reinforcement of A400 class. The rational zones for the location of reinforcements in the tensioned and compressed zones of the beams were determined. The rational placements of reinforcement in the support and span zones was based on the numerical simulation of the volumetric stress state calculated using the finite element method. It was experimentally confirmed that the failure of wood composite beams had a plastic nature and occurred only along normal sections. This excluded the possibility of brittle fracture from shear stresses and ensured the operational reliability of structures as a whole. It was shown that the proposed rational reinforcement of wooden beams increased their bearing capacity by 175% and reduced bearing deformability by 85%. The results obtained indicated high efficiency of the application of the developed method of reinforcement in beams of roofs and floors of buildings.

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Section: Introductionmentioning

confidence: 99%

Multi-Span Composite Timber Beams with Rational Steel Reinforcements

et al. 2021

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“…To increase the durability of the wooden parts of the treatment facilities, in view of the specific chemical composition of the medium, a complex modifier of selective action is proposed, which includes synthetic rubber latex in combination with an organosilicon component that effectively protects wood without emitting harmful substances into the environment. These are styrene butadiene-latex SKS-65 GP and potassium methyl silicate AKVASIL, which was tested as a modifier of wood used in aggressive environments, as well as upon restoration of buildings (Mashkin and Krutasov, 2006;Mashkin et al, 2013;Krutasov et al, 2018). The novelty of the research lies in the fact that the article presents the results of long-term and predictive tests of modified wood in aggressive environments of treatment facilities.…”

Section: Introductionmentioning

confidence: 99%

The use of modified wood in the construction of wastewater treatment plants in coal mines of Kuzbass

Elesin

Mashkin

Krutasov

et al. 2021

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PurposeThe purpose of the study is to show an improvement in resistance (permeability) and durability (residual strength) of modified wood compared to natural wood.Design/methodology/approachA relevance way to increase the durability and resistance of wood is processing with polymers. Novosibirsk State Technical University, Novosibirsk State University of Architecture and Civil Engineering (Sibstrin) and the Norilsk State Industrial Institute researched the resistance of elements of mine treatment plants made of wood modified with synthetic polymers. The study was carried out according to V.A. Kucherenko. Modification of such species as birch and pine can significantly increase wood resources by extending its service life and improving its physical and mechanical properties. Latex-organosilicon modifier was used as a modifier.FindingsLatex clogs the capillaries of wood, preventing the penetration of aggressive solutions into it, and potassium methyl silicate interacts with hydrophilic OH groups, increasing the water-repellent properties of the surface of cells and wood capillaries.Originality/valueThe results of long-term and predictive tests of modified wood in aggressive environments of treatment facilities are presented. As a result, diffusion of aggressive media into the wood becomes more difficult and its resistance and durability increase.

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Analysis of Creep of Wood-Polymer Composites

Elesin

Mashkin

KHRITANKOV

et al. 2021

IOP Conf. Ser.: Mater. Sci. Eng.

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The paper describes the results of studying the creep of wood-polymer composites under load. The results of long-term testing wood composites based on thermoplastic and thermoset polymers are given. It has been established that empirical dependencies in the form of elementary functions are suitable to describe the composite deformation. The parameters of these functions are experimentally determined.

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Hydrophobic Modifiers for Restoration of Old Wooden Buildings in Western Siberia

Cited by 3 publications

References 2 publications

Multi-Span Composite Timber Beams with Rational Steel Reinforcements

Multi-Span Composite Timber Beams with Rational Steel Reinforcements

The use of modified wood in the construction of wastewater treatment plants in coal mines of Kuzbass

Analysis of Creep of Wood-Polymer Composites

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