Testing and Evaluation of Hard Sandstone Aggregate in Hot Mix Asphalt

Table 3

Properties of the hard sandstone coarse aggregate measured using standard test methods.

Properties	Unit	Requirements	Results
Crushing value	%	≤26	23.4
Los Angeles abrasion	%	≤28	25.0
Polished stone value	BPN	≥42	56
Bulk relative density
5–10 mm	—	≥2.60	2.715
10–15 mm			2.714
Water absorption
5–10 mm	%	≤2.0	0.45
10–15 mm			0.43
Flat and elongated particles
>9.5	%	≤12	11.1
<9.5		≤18	12.8
Particle content <0.075 mm (washing)	%	<1	0.9
Durability/soundness	%	≤12	6