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Characterization of lateritic nodules for use in concrete and comparative study of simple compressive strengths of concretes based on different lateritic nodules

Author Affiliations

  • 1Laboratoire d'Energétique et de Mécanique Appliquée-Ecole Polytechnique d'Abomey-Calavi, Université d'Abomey-Calavi, Bénin
  • 2Laboratoire d'Energétique et de Mécanique Appliquée-Ecole Polytechnique d'Abomey-Calavi, Université d'Abomey-Calavi, Bénin
  • 3Laboratoire d'Energétique et de Mécanique Appliquée-Ecole Polytechnique d'Abomey-Calavi, Université d'Abomey-Calavi, Bénin

Res. J. Material Sci., Volume 6, Issue (5), Pages 1-10, October,16 (2018)

Abstract

Our research focused on the \"characterization of lateritic nodules for use in concrete and comparative study of the simple compressive strengths of concretes based on different lateritic nodules\". Characterization tests carried out on the constituent materials of the concrete (lagoon sand from Dêkoungbé, lateritic nodules from Avagoudo to Allada, from Avlamè to Zogbodomey, from Kika to Bétérou, from Tourou to Parakou, from Logozohè to Savalou and from Hounkpogon to Dassa) allowed us to appreciate the variation of their granulometry, to realize the concrete formulations relating to the six types of lateritic nodules, by the formula of DREUX - GORISSE and afterwards to compare the various results resulting from the tests of resistance to the simple compression performed on the cylindrical specimens made from these nodules. For this purpose, series of nine (9) cylindrical test tubes of concrete were made for each type of sample of laterite nodules. Simple compression tests were performed at various ages (7, 21 and 28 days) until breaking. The various results obtained allow us to conclude on the one hand, that the lateritic nodules can be used as aggregates instead of gravel in the concrete and on the other hand, that the compressive strengths to 28 days (fc28) concretes dosed at 350Kg/m3 based on the lateritic nodules tested are between 16.64 and 19.17MPa and therefore they can be limited to 16.70MPa during sizing.

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