Laboratory Characterization and Influence of Mineralogy and Grading on the Performance of Treated and Untreated Granular Materials Used as Surface Pavements in Unpaved Road

Table 1

Main geotechnical properties of the three types of aggregate.

	Grading (% of 80 𝜇m less)	Optimum water content (%)	Methylene blue value (cm^3/g)	𝜌𝑑max (kg/m³)	𝜌𝑠 (kg/m³)	𝐶𝑢
Granitic gneiss	4.4	4.5	0.046	2212	2640	40
	7	6.8		2045		20
	10.1	7.4		2020		19
Basalt	4.1	4.5	0.383	2180	2780	13
	6.4	5.75		2288		29
	8.2	6.2		2327		23
Limestone	3.8	4.2	0.600	2192	2610	10
	6.6	5.6		2220		25
	8.8	6		2315		45