Road Performance and Ice-Melting Characteristics of Steel Wool Asphalt Mixture

Table 3

Basic indexes of filler.

Technical index		Unit	Requirement	Test value	Testing standard
Apparent density		t/m^3	≥2.50	2.758	T0352-2000
Water content		%	≤1	0.3	T0103-1993
Hydrophilic coefficient		—	<1	0.7	T0353-2000
Plasticity index		%	<4	2.4	T0118-2007
Heating stability		—	Measured record	No obvious discoloration	T0355-2000
Particle size range	<0.6 mm	%	100	100	T0351-2000
	<0.15 mm		90–100	95.9
	<0.075 mm		75–100	87.8