Mechanical Characteristics of Sand Mortar (Cinder Blocks) and Compressed Laterite Bricks (BTC) Stabilized with Cement: A Comparative Study | Chapter 1 | New Visions in Science and Technology Vol. 3

The purpose of this study is to assess the dry and wet mechanical resistances of 1520x40 cm3 sand mortar (cinder blocks) and 101428 cm3 compressed laterite mortar bricks (BTC) stabilised with cement after immersion in water. According to the experimental results, the 28-day compressive strength values of the 12 percent cinder blocks and the 10 percent cement BTCs are 2.55 MPa and 7.90 MPa, respectively. These values are consistent with the normative criteria of the Building Materials Centre (CMC) in N'Djamena (2.4MPa) and the Land Materials Research Centre (CRAterre) (5MPa). When exposed to moisture, BTC loses only 28% of its tensile strength, whereas cinder blocks lose 46%. BTC has a suction capacity of 2.50 to 5.02 g/cm2 S(1/2), while cinder blocks have a suction capacity of 6.12 to 10.90 g/cm2.S(1/2). All of these values are below than the limit given by NF P 554, which is 20 g/cm2.S(1/2). The findings show that, when using the same cement composition, BTCs are more durable and cost-effective than cinder blocks in both dry and rainy seasons. In summary, this research has demonstrated, on the one hand, the disparity in qualities that exists between sand and laterite materials through the use of a stabiliser, cement, and, on the other hand, the benefit of employing local resources.

Author (S) Details

Bozabe Renonet Karka

National Superior School of Public Works (ENSTP) of N'Djamena,Chad.

Kinet Ouinra

Civil Engineering Laboratory of the National Superior School of Public Works (ENSTP), N’Djamena, Chad.

Tomtebaye Ngakoutou Fulbert

Civil Engineering Laboratory of the National Superior School of Public Works (ENSTP), N’Djamena, Chad.

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