Loose Fill Material from Hemp Shives and Binding Material for Thermal Insulation and Structural Use

Abstract:

Currently building sector requires the use of new technologies and innovative materials. Realization of mentioned requirements allow ensuring rate of performed works, reducing labour building constructions costs and improving building performance. In current work, loose fill material from hemp shives and binding material are analysed. The mixture of hemp shives and binder may be used in frame constructions as blown or poured loose fill material for thermal insulation or structural use. Hardened composite is characterized by high strength and excellent thermal conductivity when it is used in building partitions and enclosures. In our work hemp shives are mineralized with different amount of liquid sodium silicate and mixed with cementitious binder. Macro-and microstructures of hardened composite are analysed, influence of amount of mineralizer on the strength and thermal conductivity of composite is evaluated.

• Periodical: Materials Science Forum (Volume 908)
• Pages: 134-138
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.908.134
• Online since: October 2017
• Authors: Sigitas Vėjelis*, Lina Lekūnaitė-Lukošiūnė, Jurga Šeputytė-Jucikė
• Keywords: Cementitious Binder, Hemp Shives, Loose Fill Material, Macrostructure, Microstructure, Mineralizer, Strength, Thermal Conductivity

References

[1] T.Y. Lo, W.C. Tang, H.Z. Cui, The effects of aggregate properties on lightweight concrete, Build. Environ. 42 (2007) 3025–3029.

DOI: 10.1016/j.buildenv.2005.06.031

[2] J. Šeputytė-Jucikė, Impact of additives and lightweight aggregates on the structure and properties of thermal insulating cementitious composite, Doctoral dissertation, Vilnius Technika (2016).

[3] J. Šeputytė-Jucikė, M. Sinica, The effect of expanded glass and polystyrene waste on the properties of lightweight aggregate concrete, Eng. Struct. Technol. 8(1) (2016) 31-40.

DOI: 10.3846/2029882x.2016.1162671

[4] J. Alduaij, K. Alshaleh, M.N. Haque, K. Ellaithy, Lightweight concrete in hot coastal areas, Cem. Concr. Compos. 21 (1999) 453–458.

DOI: 10.1016/s0958-9465(99)00035-9

[5] R. Demirboga, R. Gul, Thermal conductivity and compressive strength of expanded perlite aggregate concrete with mineral admixtures, Energ. Build. 35 (2003) 1155–1159.

DOI: 10.1016/j.enbuild.2003.09.002

[6] N. Števulová , E. Terpáková, J. Čigášová, J. Junák, L. Kidalová, Chemically treated hemp shives as a suitable organic filler for lightweight composites preparing, Procedia Eng. 42 ( 2012 ) 948 – 954.

DOI: 10.1016/j.proeng.2012.07.488

[7] G. Balčiūnas, I. Pundienė,L. Lekūnaitė-Lukošiūnė, S. Vėjelis, A. Korjakins, Impact of hemp shives aggregate mineralization on physical–mechanical properties and structure of composite with cementitious binding material, Ind. Crops Prod. 77 (2015).

DOI: 10.1016/j.indcrop.2015.09.011

[8] C. Garnier, S. Prétot, F. Collet, Life assessment of hemp concrete wall manufactured by spraying, in: 2nd International conference on building energy and environment, Boulder, Colorado, (2012).

[9] F. Collet, J. Chamoin, S. Pretot, C. Lanos, Comparison of the hygric behaviour of three hemp concretes. Energ. Build. 62 (2013) 294–303.

DOI: 10.1016/j.enbuild.2013.03.010

[10] L. Arnaud, E. Gourlay, Experimental study of parameters influencing mechanical properties of hemp concretes, Constr. Build. Mater. 28 (2012) 50–56.

DOI: 10.1016/j.conbuildmat.2011.07.052

[11] M. Le Troedec, P. Dalmay, C. Patapy, C. Peyratout, A. Smith, T. Chotard, Mechanical properties of hemp lime reinforced mortars: Influence of chemical treatment of fibers. J Composite Mat 45 (2011) 2347-2357.

DOI: 10.1177/0021998311401088

[12] A. Shahzad, Hemp fibre and its composites – a review, J Composite Mat 45 (2011) 973-986.

[13] EN 12667: 2001, Thermal performance of building materials and products - Determination of thermal resistance by means of guarded hot plate and heat flow meter methods - Products of high and medium thermal resistance (2001).

DOI: 10.3403/02109602

[14] EN 12939: 2000, Thermal performance of building materials and products - Determination of thermal resistance by means of guarded hot plate and heat flow meter methods - Thick products of high and medium thermal resistance (2000).

DOI: 10.3403/02152153

[15] EN 826: 2013, Thermal insulating products for building applications - Determination of compression behaviour (2013).