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Performance of Stabilized Earth with Wheat Straw and Slag

Published online by Cambridge University Press:  17 March 2020

W Benhaoua,
K. Grine and
S. Kenai
W Benhaoua
Affiliation:
Geomaterials and civil engineering laboratory, University of Blida1, Algeria
K. Grine
Affiliation:
Geomaterials and civil engineering laboratory, University of Blida1, Algeria
S. Kenai*
Affiliation:
Geomaterials and civil engineering laboratory, University of Blida1, Algeria
*
*Corresponding authors sdkenai@yahoo.com
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Abstract

Stabilized earth is a very ancient material that has been used in many countries as a low cost, environment friendly construction material. However, its durability under humid environments is low. Stabilization using cement, lime and natural fibres could enhance its durability and lowers the risk of cracking. This paper presents an experimental investigation into the performance of stabilised local soil by either, cement mixed with a proportion of granulated blast furnace slag (GBFS) /or straw naturel fibres. Unconfined compressive strength (UCS), shrinkage, wetting and drying, capillary absorption and thermal conductivity tests were performed on both untreated soil samples and stabilised soil samples. The results show that stabilising the soil with cement and GBFS increased both compressive strength, durability, thermal conductivity and decreased the capillary absorption and the shrinkage. The addition of natural wheat fibres increased the capillary absorption but leads to a decrease in the thermal conductivity and to a further reduction in the shrinkage and hence a better insulating less prone to cracking material.

Keywords

environmentfibersustainabilitythermal conductivity

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Type
Articles
Information
MRS Advances , Volume 5 , Issue 25: African Materials Research Society 2019 , 2020, pp. 1285 - 1294
Copyright
Copyright © Materials Research Society 2020

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