Estimating the Asphalt Binder Film Thickness Using Scanning Electron Microscope and Energy Dispersive X-Ray Spectroscopy

Table 4

Properties of Margalla aggregate.

Property	Value	Specification limit
Los Angeles abrasion value, (%) ASTM C131 [24]	21.5	30 (max)
Flakiness index, (%) BS 933-3 [25]	4.86	10 (max)
Elongation index, (%) ASTM D4791 [26]	2.4	10 (max)
Fractured particles (two faces), (%) ASTM D5821 [27]	100	90 (min)
Sand equivalent value, (%) [28]	77	50 (min)
Water absorption, (%) ASTM C127 [29]	1.04	2 (max)
Soundness of coarse aggregate, (%) ASTM C88 [30]	6.21	8 (max)
Soundness of fine aggregate, (%) ASTM C88 [30]	4.9	8 (max)
Uncompacted voids in fine aggregate, (%) ASTM C1252 [31]	48.5	45 (min)
Alkali silica reactivity, ASTM C586 [32]	Innocuous	—
Petrography, ASTM C295 [33]	Innocuous	—