[1] Peter Walker and Trevor Stace, “Properties of cement stabilized compressed earth blocks and mortars”, Materials and Structures, Vol. 30, pp 545-551, November 1997

[2] E.E.J. Kamang, “Strength properties of compressed earth bricks with earthworm cast as stabilizer”, Journal of Environmental Sciences, 1(2), pp. 65-70, 1998

[3] Lowenhaupt, “CAST EARTH”. Website, www.castearth.com, December 2005.

[4] “In-service deterioration of compressed earth blocks”, Geotechnical Engineering 23: 461–468, 2005.

[5] Vroomen, R., “Gypsum stabilized earth” Research on the properties of cast Gypsum-stabilized Earth and its Suitability for low-cost housing construction in developing countries, Thesis for MSc Architecture, Building& Planning, Eindhoven University of Technology, The Netherlands, June 2007.

[6] Lawrence, M. et.al. “Mortars for thin unfired clay masonry walls”.Koblenz, Germany. pp.67-73, 2008.

Tikrit Journal of Engineering Sciences (2013) 20(3) 88-94

Effect of Gypsum Stabilization on Mechanical Properties of Compressed Earth Blocks

Maher O. Amin
Buildings Dept., Technical Institute, Mosul, Iraq


There is a need for development of alternative materials for the building industry with low carbon footprint and at the same time saving energy. Clay has been used as a building material from the beginning of humankind. The Compressed Earth Blocks often referred to simply as CEB, is a type of manufactured construction material formed by the compression of the soil in a mold with the help of a manual or motorized press to form a regular block of appropriate shape and size. For the purpose of researches, the press is manufactured locally at Mosul Technical Institute. In the present work, the effect of semi-hydrate gypsum as stabilizer on some of the mechanical and physical properties of unfired CEB was determined. A series of test blocks were fabricated using a local soil stabilized with 0, 5, 10, 15, 20 and 25% semi-hydrate gypsum, for each of the precedent ratios, three percentages of mixing water were used 10, 20 and 30%, and compacted with a manual press. Results for compressive strength, flexural strength, water absorption and drying shrinkage are presented in the paper. Results show that the addition of semi-hydrate gypsum improves the mechanical and physical properties of CEB. These preliminary results reinforce their suitability for application in low cost buildings.

Download Full-text PDF

KeywordsCEB, Stabilization, Semi-hydrate Gypsum, Mechanical Behaviors.

How to cite

TJES: Amin MO. Effect of Gypsum Stabilization on Mechanical Properties of Compressed Earth BlocksTikrit Journal of Engineering Sciences 2013; 20(3): 88-94.
APA: Amin, M. O. (2013). Effect of Gypsum Stabilization on Mechanical Properties of Compressed Earth Blocks. Tikrit Journal of Engineering Sciences, 20(3), 88-94.
Loader Loading...
EAD Logo Taking too long?
Reload Reload document
| Open Open in new tab

Download [338.61 KB]