Wood-Cement Composite and its Reinforcement with Wooden Bars

Abstract:

The task of reducing the negative environmental impact of industrial production and human economic activity is a prerequisite for the development of energy-saving technologies and materials based on industrial and household waste. The technology for the production of wood-cement composite materials is of great importance from an engineering point of view, as well as the technology for wood waste disposal, which has environmental attractiveness. Wood-cement composites are used as heat-insulating and structural materials. At the same time, one of the factors limiting their wide distribution is insufficient bearing capacity. In the course of the research, the strength indicators of building blocks made of wood-cement composite were determined, provided they were reinforced with wooden bars. The authors also concentrated on the thermal efficiency factors influenced by the presence of a block of reinforcing elements in the massif. The study was carried out by means of a physical experiment using Elcut software package. The resulting increase in strength during reinforcement amounted to 27 ... 31% or 3.1 ... 3.22 MPa with the initial strength indicators of the unreinforced block - 2.44 MPa. The volume of the resistance to heat transfer of the block made of a wood-cement composite during its reinforcement practically does not change. The results obtained can be used in the design and operation of building structures.

• Periodical: Key Engineering Materials (Volume 910)
• Pages: 982-987
• DOI: https://doi.org/10.4028/p-269m9k
• Online since: February 2022
• Authors: Sergey N. Dolmatov*, P.G. Kolesnikov
• Keywords: Reinforcement, Strength, Wood-Cement Composite

References

[1] W.R. Stahel. The Circular Economy: A User's Guide, Routledge (2019).

[2] Industry development strategy for processing, utilization and disposal of production and consumption waste for the period up to 2030: Order of the Government of the Russian Federation of 25.01.2018 No. 84-r. Collected Legislation of the Russian Federation. - 2018 - No. 6 - Art. 920.

[3] Guardigli, L., Monari, F., Bragadin, M.A. Assessing environmental impact of green buildings through LCA methods: A comparison between reinforced concrete and wood structures in the European context. Procedia Engineering. 2011. 21. p.1199–1206.

DOI: 10.1016/j.proeng.2011.11.2131

[4] I.I. Akinwumi, O. M. Olatunbosun, O. M. Olofinnade, P. O. Awoyera, Structural Evaluation of Lightweight Concrete Produced Using Waste Newspaper and Office Paper, Civ. Environ. Res. 6(7),2014, 160 – 167.

[5] B. Belhadj, M. Bederina, N. Montrelay, J. Houessou, M. Quéneudec, Effect of substitution of wood shavings by barley straws on the physico-mechanical properties of lightweight sand concrete. Constr. Build. Mat. 66 (2014), 247–258.

DOI: 10.1016/j.conbuildmat.2014.05.090

[6] Global forest resources assessment 2015. How are the world forests changing? - Rome: UN FAO, 2015. – www.fao.org/forestry/FRA2015/dataset.

[7] Overview of the timber industry in Russia 2018. M.: EY, ASBO, 2018. - 40 p.

[8] Strategy for development of forestry complex of the Russian Federation for the period up to 2020. Order of the Ministry of Industry and Trade of Russia and the Ministry of Agriculture of Russia dated October 31, 2008. No. 248/482.

[9] Nanazashvili I.Kh. Building materials made of wood-cement composition. M.: Stroyizdat, 1990. - 415 p.

[10] Modification of sawdust concrete to improve physical and mechanical properties. S.S. Davaasenge, O.N. Burenina, E.S. Petukhova. Scientific journal KubSAU, 2014, No. 101 (07), pp.1-10.

[11] Dolmatov S.N., Martynovskaya S.N. Investigation of the strength of dispersion-reinforced sawdust concrete with various non-metallic materials. Coniferous boreal zones. 2018.Vol. 36, No. 6, pp.536-541.

[12] Dolmatov S.N. Influence of fractional composition of sawdust on the strength properties of sawdust concrete. Journal of Siberian Federal University. Technics and techology. 2017, No. 1, pp.48-51.

DOI: 10.17516/1999-494x-2017-10-1-48-51

[13] On increasing bearing capacity of products made of fiber-reinforced concrete when reinforcing them with fiberglass reinforcement. L.V. Morgun, A.V. Visnap. Construction - 2015 Modern problems of construction. Materials of the international scientific and practical conference. FGBOU VPO Rostov State University of Civil Engineering, Union of Builders of the Southern Federal District, Association of Don Builders. 2015, pp.444-446.

[14] Gutkowski, R. M. and Chen, T.-M. 1996. Tests and analysis of mixed concrete-wood beams, Proc. Int. Wood Engineering Conference, New Orleans, La., Omnipress, Madison, WI., p.3.436-3.442.

[15] Abeles P. W. Static and Fatigue Tests on Partially Prestressed Concrete Constructions /ACI Journal. Vol. 50. 1954. - December - pp.361-376.

DOI: 10.14359/11684

[16] ELCUT. Simulation of two-dimensional fields by finite element method. User's Guide. - SPb.: PK TOR, 2009. - 339 p.

[17] SP 50.13330-2012. Thermal protection of buildings. Ministry of Regional Development of the Russian Federation. - Introduced 07.01.2013. - M., 2012. - 97 p.

[18] Dolmatov S.N., Nikonchuk A.V. Investigation of indicators of thermal conductivity of wood-cement composites. Coniferous boreal zones. - 2019. Vol. 37, No. 5, pp.341-346.