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Study of the characteristics of a mortar formulated from a mixture of river sand and crushing sand

Author Affiliations

  • 1Laboratory of Research in Engineering Sciences, Engineers High National School of University of Lome, TOGO
  • 2Laboratory of Research in Engineering Sciences, Engineers High National School of University of Lome, TOGO
  • 3Laboratory of Research in Engineering Sciences, Engineers High National School of University of Lome, TOGO
  • 4Laboratory of Research in Engineering Sciences, Engineers High National School of University of Lome, TOGO

Res. J. Material Sci., Volume 9, Issue (1), Pages 7-10, February,16 (2021)

Abstract

In Togo, quarry sands (silty sand) and river sands are the most used in the construction of structures, particularly for mortar manufacture. Crushing sands from rock crushing quarries are very little used because they contain enough fine elements. In this work, the characteristics of a mortar obtained by mixing river sand with crushing sand are studied. Identification tests were carried out on the mortar components which are river sand, crushing sand and cement. Then the river sand mass is varied in the mixture in proportions ranging from 0 to 100% and in steps of 25%. Tests of measurement of slump, density, porosity and flexural and compressive strengths at 28 days of age are carried out on each mixture. It appears that the characteristics of the mortar studied are improved by the addition of river sand. A mixture of 50% river sand and 50% crushed sand is the optimal mixture which makes it possible to have characteristics of the mixed mortar better than those of a mortar containing unmixed sand.

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