Study on Cracking Resistance of Basalt Fiber-Reinforced Microbond Asphalt Macadam

Table 2

Physical and mechanical indices of coarse aggregates with different particle sizes.

Number	Test item	Standard value	Test results of coarse aggregates				Test method
			15∼25 mm	10∼15 mm	5∼10 mm	3∼5 mm
1	Crushing strength (%)	≤26	—	15.8	—	—	T0316
2	Apparent relative gravity (g/cm³)	≥2.5	2.742	2.721	2.734	2.752	T0304
3	Bulk volume density (g/cm³)	Measured	2.673	2.724	2.687	2.636	T0304
4	Water absorption rate (%)	≤3.0	2.02	2.08	2.31	2.42	T0310
5	Los Angeles abrasion value (%)	≤28	11	13.3	14.3	—	T0320
6	Asphalt adhesion grade	≥4	4	—	—	—	T0616