Sustainable Thermal Insulation Biocomposites from Locally Available Hemp and Lime

Maris Sinka, Genadijs Sahmenko


The key focus of the presented research is on sustainable thermal insulation biocomposites which can be made from locally available hemp and lime. The main gains of the use of such material are given, with emphasis on CO2 reduction. In the first stage samples of an artificial hydraulic lime using three different limes and three hydraulic additives are created and tested, the one with the highest compressive strength (DL60 lime with 40% metakaolin addition) are chosen for further research. In the second stage three different density mixes with the chosen binder are created, optimal hemp/binder ratio is determined, as well as compressive strength and thermal conductivity. Results indicate that created mixtures have good potential as self-bearing thermal insulation material used in low-rise buildings.


Hempcrete; Hydraulic lime; Low-carbon; Sustainable materials

Full Text:



Bruijn P. “Mechanical Properties using both Shives and Fibres,” 2008. Faculty of Landscape Planning, Hortculture and Agricultural Sciences, Alnarp. [Online]. Available: OId=1717272&fileOId=1717289 [Accessed: Mar. 1, 2013]

Tracking Indrustrial Energy Efficiency and CO2 Emissions. France: IEA, 2007.

Klavs G. “Siltumnīcefekta gāzu emisijas Latvijā: emisiju avoti un to ietekmējošie faktori.” [Online]. Available: [Accessed: Mar. 1, 2013]

Bushbridge R. “Hemp-clay: an initial investigation into the thermal, structural and environmental credentials of monolithic clay and hemp,” 2009. Graduate School at the Centre for Alternative Technology [Online]. Available: [Accessed: Mar. 1, 2013]

Glaeser E.L., Kahn M.E., Wang R., Zheng S. "The Greenness of China," 2009. Harward Kennedy school [Online]. Available: [Accessed: Mar. 1, 2013]

Lawrence R. M. H. „A study of carbonation in non-hydraulic lime mortars.” University of Bath" [Online]. Available: [Accessed: Mar. 1, 2013]

Strozs M., Sahmenko G. “Use of straw-clay material in walls,” 3rd international Civil Engineering conference, building materials 1, pp. 84-90, 2011

Wilkinson S “A Study of the Moisture Buffering Potential of Hemp in Combination with Lime and Clay-Based Binders.” 2009. Graduate School at the Centre for Alternative Technology [Online]. Available: [Accessed: Mar. 1, 2013]

Cerny R., et al. “Effect of pozzolanic admixtures on mechanical, thermal and hygric properties of lime plasters,” 2006. Construction and Building Materials 20, p. 849-857

Vejmelkova E., et al. „Application of burnt clay shale as pozzolan addition to lime mortar,” 2012. Cement & Concrete Composites 34, p. 486-492

Wegian F.M., AlSaeid H.M., Alnaki A.A. “Effect of lime and fly ash on the strength of cement composite mortars.”Australian Journal of Structural Engineering 12, 2011 p. 47-56

Edwards D.D. “Pozzolanic properties of glass fines in lime mortar.” Advances in Applied Ceramics, 2007 p. 309-313

Miskin N. “The Carbon Sequestration Potential of Hempbinder.”Graduate School at the Centre for Alternative Technology [Online]. Available: [Accessed: Mar. 1, 2013

Ip K., Miller A. “Life cycle greenhouse gas emissions of hemp-lime wall constructions in the UK.” Resources, Conservation and Recycling 69, 2012 p. 1-9

Vejmelkova E., et al. Mechanical, fracture-mechanical, hygric, thermal, and durability properties of lime-metakaolin plasters for renovation of historical buildings // In: Construction andBuilding materials 31, 2012 – p. 22-28

Sinka M., Korjakins A., Sahmenko G. ”The use of hempshives with hydraulic lime binder in insulation materials” [Online]. Available: [Accessed: Mar. 1, 2013]



  • There are currently no refbacks.

SCImago Journal & Country Rank