Modification Mechanism of Asphalt Modified with Rock Asphalt and Styrene-Butadiene Rubber (SBR)

Table 7

BBR test results of BRA-SBR compound modified asphalt.

Content of SBR (%)		0	2	4	5	6	8
S (MPa)	−6°C	248	214	181	143	129	117
	−12°C	523	437	377	298	266	248
	−18°C	—	—	—	631	582	524
M	−6°C	0.301	0.327	0.344		0.388	0.409
	−12°C	0.253	0.265	0.290	0.327	0.333	0.346
	−18°C	—	—	—	0.263	0.271	0.289
S/M (MP-1)	−6°C	0.001209	0.001535	0.001911	0.002585	0.003031	0.003526
	−12°C	0.000485	0.000608	0.000771	0.001101	0.001257	0.001401
	−18°C	—	—	—	0.000417	0.000466	0.000552