Mechanical characteristics of Avlamè lateritic gravel improved with granite crushed for its use in road construction in Benin

Lateritic gravels are the most abundant road materials used in pavement foundations. With scarcity of good quality materials, recourse to lateritic having weak technical characteristics, like quarry Avlamè Benin, is felt with high price stabilizers cement, other methods must be explored cooperation order reduce cost stabilization and, consequently, construction and risks related environmental pollution In this respect, it imperative determine characteristics gravel improved granitic crushed stone 0/31.5 for its use base course flexible pavements. Thus, an experimental study on different percentages was carried out following normative recommendations construction. This characterization allowed highlight properties granite at percentages. The results obtained show that pass rate 80 μm sieve goes from 27.77% 10.51%, plasticity index 17.67% 11.33%, dry density OMC 2.17 t/m3 2.23 CBR 95% 58.00% 108.67%. These mix 2 (85%GL+15%CG), 3 (80%GL+20%CG), 4 (75%GL+25%CG), 5 (70%GL+30%CG) 6 (65%GL+35%CG) can as a pavements accordance requirements CEBTP revised 2019 Catalogue AGEROUTE-Senegal.