Influence of Fiber Type on Low-Temperature Fracture Performance of Presawed Asphalt Mixture Beams

Table 4

Bending test results.

Fiber type	Temperature (°C)	Presawed migration 0 mm			Presawed migration 20 mm			Presawed migration 40 mm
		Rb (MPa)	εb/ε	Sb (MPa)	Rb (MPa)	εb/ε	Sb (MPa)	Rb (MPa)	εb/ε	Sb (MPa)
Plain	−10	4.649	0.0168	277	5.047	0.0165	306	7.214	0.0175	412
	0	5.117	0.0200	256	4.860	0.0192	253	7.135	0.0234	305
	10	5.052	0.0239	211	5.856	0.0260	225	7.068	0.0257	275
Polyester fiber	−10	5.016	0.0174	288	4.704	0.0139	338	6.871	0.0158	435
	0	5.196	0.0210	247	5.436	0.0190	286	7.860	0.0226	348
	10	4.656	0.0204	228	5.105	0.0216	236	8.513	0.0275	310
Basalt fiber	−10	4.944	0.0174	284	4.560	0.0107	426	6.893	0.0148	466
	0	4.865	0.0179	272	6.221	0.0221	281	7.469	0.0235	318
	10	5.465	0.0227	241	6.149	0.0226	272	7.721	0.0253	305
Lignin fiber	−10	—	—	—	5.484	0.0182	301	8.196	0.0194	422
	0	5.165	0.0197	262	5.196	0.0203	256	7.637	0.0209	365
	10	5.016	0.0223	225	5.215	0.0212	246	7.598	0.0272	279