International E-publication: Publish Projects, Dissertation, Theses, Books, Souvenir, Conference Proceeding with ISBN.  International E-Bulletin: Information/News regarding: Academics and Research

Comparative study of the mechanical characteristics of sand mortar (cinder blocks) and compressed laterite bricks (BTC) stabilized with wement

Author Affiliations

  • 1National Superior School of Public Works (ENSTP) of N\'Djamena, Chad
  • 2Civil Engineering Laboratory of the National Superior School of Public Works (ENSTP), N′Djamena, Chad
  • 3Civil Engineering Laboratory of the National Superior School of Public Works (ENSTP), N′Djamena, Chad

Res. J. Recent Sci., Volume 9, Issue (1), Pages 1-11, January,2 (2020)


The purpose of this study is to determine the dry and wet mechanical resistances after immersion in water of bricks of 15x20 x 40cm3 in sand mortar (cinder blocks) and 10x14x28cm3 compressed laterite mortar bricks(BTC) stabilized with cement. The experimental results obtained show that the 28-day compressive strength values of the 12% cinder blocks and those of the 10% cement Btcs are respectively 2.55MPa and 7.90MPa. These values are in accordance with the normative values recommended by the Building Materials Centre (CMC) in N\'Djamena (2.4MPa) and the Land Materials Research Centre (Craterre) (5MPa). In the presence of moisture, the loss of resistance is only 28% for BTC and 46% for cinder blocks. Also, the bricks have a suction capacity ranging from 2.50 to 5.02g/cm² S1/2 for BTC and 6.12 to 10.90g/cm². S1/2 for cinder blocks. These values are all less than 20g/cm². S1/2, a value imposed by NF P 554. A comparison of the results of this work shows that, with the same cement content, during dry seasons as in rainy seasons, BTCs are more resistant and more economical than cinder blocks.


  1. Olivier M. and Mesbah A. (1986)., Earth material: The test of static compaction for the manufacture of comprehended raw earth bricks., Liaison Bulletin of Ponts et Chaussées Laboratories (LPC), 146, 34-37 (France).
  2. Abalo P′kla. (2002)., Simple compression characterization of compressed earth blocks (BTC): Application to masonry «BTC- EARTH MORTAR»., Phd thesis in Civil Engineering. INSA Lyon (France), 234.
  3. Olivier M., Mesbah A., Morel J.C. and El Gharbi Z. (1997)., Test method for strength tests on blocks of compressed earth., Materials and Structures, 30(9), 515-517.
  4. Olivier M. (1994)., The earth material: compaction, behaviour, application to structures in earth blocks., Phd thesis, INSA Lyon, Order No 94 ISAL 0004.
  5. Creuset Michel (1997)., Materials and Components, Gros œuvres., Delagrave - Paris (France).
  6. Coursnet Yves (2010)., Properties and characteristics of building materials., Monitor. Paris (France).
  7. Houben H. and Guillaud H. (1995)., Treaty of earth construction., edition parenthesis, Marseille, France, 355.
  8. AFNOR (2001)., Earth Blocks Tablets For Walls And Partitions, Paris (France).,
  9. AFNOR NF EN 13286-53. (2005)., Mixtures treated and not treated with hydraulic binders, Part 53: axial compression method for specimens made from materials treated with hydraulic binders.,
  10. NF EN 413-1. (1994)., Masonry cement., European Committee for Standardization, Part 1: specification.
  11. NF EN 413-1. (1994)., Masonry cement., European Committee for Standardization, Part 2: Test methods.
  12. Eurocode 6 (1996)., Construction of masonry structures., European Committee for Standardization.
  13. CRATerre (1985)., Building in soil., alternative editions, Paris, 286.
  14. Daniel Cordary (1994)., Soil mechanics., rue Lavoisier, Paris cedex, 359.
  15. Mahamat Saleh Ibrahim Yacoub (2010)., Comparative study between the improvement of compressed earth bricks stabilized by cement and slaked lime., memory 2ie 46.
  16. Meukam P., Noumowe A., Jannot Y. and Duval R. (2003)., Thermophysical and mechanical characterization of stabilized clay bricks for building thermal insulation., Materials and Structures, 36(261), 453-460.
  17. Meukam P. (2004)., Upgrading of stabilized earth bricks with a view to the thermal insulation of buildings., Ph.D. thesis, 3rd cycle, University of Yaoundé I.