Application of Modified Peat Aggregate for Lightweight Concrete

Abstract:

The scientific article "Application of Modified Peat Aggregate for Lightweight Concrete" presents the results of studies of the properties of a new composite material for use in enclosing structures of residential and public buildings. Physical and mechanical characteristics of possible aggregates of local production for this type of concrete affecting its operational properties are considered. The prospects of using fly ash as an additive improving the characteristics of polystyrene concrete with the addition of modified peat have been established. The analysis was made and the optimal compositions for obtaining lightweight concrete based on peat and polystyrene foam were selected. The desorption properties of lightweight concrete important for its effective operation as a wall material were tested. It was found that the use of new types of surfactants can improve the water wettability of peat particles and polystyrene granules, thereby reducing the water-cement ratio and improving the compressive strength of the material. Possible efficiency of application of this type of concrete for use in enclosing structures of buildings and constructions under construction in seismic regions of Russia is considered. The presence of damping effect manifested in the material due to the presence of polystyrene granules in the perception of a certain level of load, which is important for the work of concrete under seismic influences, was experimentally established.

• Periodical: Solid State Phenomena (Volume 309)
• Pages: 120-125
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.309.120
• Online since: August 2020
• Authors: Fedor L. Kapustin*, Vladimir A. Belyakov
• Keywords: Aggregate, Damping Effect, Foam Polystyrene, Lightweight Concrete, Peat

References

[1] S.N. Gamayunov, O.S. Misnikov, V.A. Belyakov Prototype filler based on peat and sapropel for the manufacture of lightweight concrete, Technology and complex mechanization of peat production, Tver. 1996. pp.30-33.

[2] O. Misnikov, S. Gamayunov, Hollow filler for lightweight concrete based on peat and mineral raw materials, Building materials, 2004, 5, pp.22-24.

[3] V.A. Belyakov Physico-mechanical and thermal insulation properties of lightweight concrete based on modified peat for wall structures, Construction and education, 14 (2011) 52-56.

[4] V.A Belyakov and L.A. Bannikova, Study of the effect of recent chemical admixtures on the modified polysterene concrete properties, Procedia Engineering 150 (2016) 1446–1451.

DOI: 10.1016/j.proeng.2016.07.079

[5] C.L. Verma, S.K. Handa, S.K Jain, R.K. Yadav, Techno-commercial perspective study for sintered fly ash light-weight aggregates in India, Construction and Building Materials (1998), Vol. 12, № 6-7, pp.341-346.

DOI: 10.1016/s0950-0618(98)00022-1

[6] Zbigniew G. Fly ash in cement composition and concrete. Publishing house of the Silesian Polytechnic University. Gliwice (2013).

[7] Sear L.K.A. Properties and use of coal fly ash a valuable industrial by-product. Thomas Telford Ltd. London (2001).

[8] Hubacek A., Hela R. Concrete with high content of fly ash intended for constructions with long durability. Solid State Phenomena. Trans Tech Publications, Switzerland (2016).

DOI: 10.4028/www.scientific.net/ssp.249.21

[9] E. Isayeva, Investigation of the properties of building materials modified with hydrophobic additives based on peat Journal of Mining Institute (Saint-Petersburg Mining University) vol. 174 (2017) pp.76-78.

[10] S.M. Islam, R. Hashim, A.B.M. S. Islam, and R. Kurnia, Effect of Peat on Physicomechanical Properties of Cemented Brick, The Scientific World Journal, vol. IV (2014) Article ID 328516, 8 p.

DOI: 10.1155/2014/328516

[11] N. Kopanitsa, Y. Sarkisov, A. Gorshkova and O. Demyanenko, Additives for cement compositions based on modified peat, AIP Conference Proceedings (2016).

DOI: 10.1063/1.4937885

[12] A.I. Kudyakov, Foam concrete of increased strength with the thermomodified peat additives, IOP Conf. Ser.: Mater. Sci. 71 (2015).

DOI: 10.1088/1757-899x/71/1/012012

[13] J. Liiv, T. Teppand, E. Rikmann, T. Tenno, Novel ecosustainable peat and oil shale ash-based 3D-printable composite material, Sustainable Materials and Technologies, Vol.17, (2018).

DOI: 10.1016/j.susmat.2018.e00067

[14] А. Arakelyan, Strength and deformative properties of light concrete depending on the properties of aggregates Moscow, (1986), 24.