American Journal of Civil Engineering and Architecture. 2025, 13(1), 1-4
DOI: 10.12691/ajcea-13-1-1
Open AccessArticle
Mbaye Wade1, , Macodou Thiam2, Makhaly Ba1 and Mapathé Ndiaye1
1Laboratoire de Mécanique et Modélisation, UFR SI, University Iba Der Thiam of Thies, Thies, Senegal
2Laboratoire de Matériaux, d’énergétique, d’électricité et d’économie, University Iba Der Thiam of Thies, Thies, Senegal
Pub. Date: January 06, 2025
Cite this paper:
Mbaye Wade, Macodou Thiam, Makhaly Ba and Mapathé Ndiaye. Influence of Sand on the Mechanical Strengths of Compressed Earth Blocks Based on Sindia Laterite Stabilized with Cement. American Journal of Civil Engineering and Architecture. 2025; 13(1):1-4. doi: 10.12691/ajcea-13-1-1
Abstract
More than a third of the world's population now lives in earthen dwellings which have many environmental, social and cultural advantages. In Senegal, compressed earth blocks (CEBs), using laterite as the base material, are by far the most widely used technique. Indeed, lateritic gravel borrowings are relatively well distributed throughout the national territory. But blocks made with laterite are often stabilized with a good dose of cement. This study aims to verify whether the stabilization of CEBs made with Sindia laterite is necessary and to see the influence of the incorporation of 10% sand on the mechanical resistance to compression and traction of the blocks. Several dosages of cement (6%, 8% and 10%) are used, and the blocks are 28 days old. During this period, they are wrapped in plastic film to preserve their water content. Resistance measurements were carried out by crushing the blocks with a press with a capacity of 1500 kN for compression and 50 kN for traction. The results show that with 10% sand, the compressive and tensile strengths of the blocks are improved: the compressive strength increases from 2.08MPa to 2.29 MPa with 6% cement, from 3.08 MPa to 3.33 MPa with 8% cement and from 4.36 MPa to 4.62 MPa with 10% cement; the tensile strength by splitting increases from 0.12 MPa to 0.16 MPa with 6% cement, from 0.19 MPa to 0.25 MPa with 8% cement and from 0.28 MPa to 0.33 MPa with 10% cement. Thus, sand can reduce the amount of cement used for the stabilization of BTC based on Sindia laterite and thus reduce the carbon impact of these blocks.Keywords:
Compressed earth block laterite cement compressive strength tensile strength
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References:
[1] | Diop B. O. Utilisation rationnelle des graveleux latéritiques dans les structures de chaussées routières : cas de gisements de la région administrative de Thiès au Sénégal. Thèse de doctorat unique en Géotechnique routière de l’Université Cheikh Anta Diop de Dakar. 2022. |
|
[2] | Guerin L., International Labour Office. Principes directeurs pour l’emploi de la terre crue. Bureau international du travail. 1985. |
|
[3] | Ndiaye C.. Application des concepts d’Etat limite et d’Etat Critique à des Sols Tropicaux. Thèse de doctorat du diplôme de Docteur de l’université de Thiès. 2018. |
|
[4] | AFNOR Association française de normalisation. XP P13- 901 : Blocs de terre comprimée pour murs et cloisons. 2001. |
|
[5] | Philipponnat G., Hubert B. Fondations et ouvrages en terre. 5e édition, Eyrolles, Paris, 548 p. 2005. |
|
[6] | ORAN: Organisation Régionale Africaine de Normalisation NOR98: Blocs de terre comprimée. Guides du CDI coédition par CDI et CRATerre-EAG. 1998. |
|
[7] | Harries K.A. Nonconventional and Vernacular Construction Materials: Characterisation, Properties and Applications. Elsevier Science 496p. 2016. |
|
[8] | Izemmourena O, Guettala A. Amélioration de la durabilité des briques de terre comprimée à base d’un sol de la région de Biskra. MATEC Web of Conferences, 11, 02001. 2014. |
|