||PHYSICAL AND MECHANICAL CHARACTERISTICS OF THE EARTHEN BARNS USED FOR FOOD CROP STORAGE IN THE NORTH>WEST OF BENIN (WEST AFRICA)
GIBIGAYE ADAM MOHAMED ,
ZEVOUNOU CRÉPIN ,
GBAGUIDI AÏSSE GÉRARD LÉOPOLD ,
KAKI CHRISTOPHE ,
||Journals of RUDN (Russian University of Drujbi Narodov)
||Atacora and Donga are two departments regarded as the barns of Benin. In these two regions, the surplus
of food crops harvested by farmers is stocked in earthen barns whose primary construction material is
kneaded clay soil with an admixture of vegetable straws (fonio, rice…) pounded beforehand.
The following research is designed to scrutinize the variation of compression strength and/or tensile
strength of the used earthen material with respect to the optimum straw content, and the fluctuation of the
fracture related parameters.
Laboratory tests have shown that an optimum straw content of 2% provides the highest compression
strength with the best mechanical performances in terms of cohesion and internal angle of friction. Tensile
strength, however, continues to increase with higher straw percentages with no breakpoint indication. Moreover,
the laboratory determination of the composite material’s modulus of elasticity has proven that the used
soil does not have a linear elastic behavior.
||Earthen barns, clay soil, vegetable straws, strength, fracture related parameters
||48 - 57