@article{ajcea20231124,
author={{Dzoualou, Sorel Gael Dzaba and Ahouet, Louis and Okina, Sylvain Ndinga and Nkembo, Mang Egrik P. W. O.},
title={Evaluation of the Effect of Changes in the Distribution of Particle Size Fractions on the Mechanical Properties of the Lateritic Gravelly-limestone (0/31.5) Mixture},
journal={American Journal of Civil Engineering and Architecture},
volume={11},
number={2},
pages={52--63},
year={2023},
url={http://pubs.sciepub.com/ajcea/11/2/4},
issn={2328-3998},
abstract={This work evaluates the effect of adding limestone (corrector) to lateritic gravelly on the granulometric fractions of the mixtures in the process of modifying the mechanical properties. The lateritic gravelly - limestone couple does not obey the law of mixtures. The optimal mixture is obtained by adding 30 % by weight of the corrector to obtain a mixture with unmeasurable clay, silt (4.25 %) and sand (19.47 %) contents. The results obtained show that from 15-30% by weight of the corrector, the compressive strength, elastic modulus, CBR and maximum dry density increase and the use properties are improved. From 30-40% by weight of the corrector with sand fraction SF (19.47-21.09%) in the mixture, the mechanical properties decrease. The addition of the corrector (15-40%) decreases the clay (5.18-1.68%) and silt (14.09-0.67) fractions, while the sand fraction (12.93-21.09%) increases by 63.11%. The increase of the sand fraction by 50.58% decreases the plasticity index by 77.16%. For a sand fraction SF (50.58-63.11%), the plasticity index is not measurable and the sand equivalent SE (32.5-35%) of the mixture increases by 7.69%. Increasing the sand fraction causes the compaction curves (Proctor) to flatten and the optimum moisture content to decrease. There is a negative correlation between compressive strength and strain at failure. Mixes containing 15-25% and 30-40% of the corrector can be used as a base layer for T1 &lt; (5.10<SUP>5</SUP>) and T1-T2 (5.10<SUP>5</SUP> - 1.5.10<SUP>6</SUP>) traffic respectively, in terms of the cumulative number of passes of a 13T equivalent axle.},
doi={10.12691/ajcea-11-2-4}
publisher={Science and Education Publishing}
}