The Effect of Crumb Rubber Particle Size to the Optimum Binder Content for Open Graded Friction Course

Table 3

Summary for the values of abrasion loss, binder draindown, and void in mix.

Sample	Average abrasion loss (%)	Average binder draindown (%)	Average void in mix (%)	Sample	Average abrasion loss (%)	Average binder draindown (%)	Average void in mix (%)
20# 4R 4B	41.19	—	23.28	80# 4R 4B	29.97	—	27.08
20# 4R 5B	14.81	0.30	22.97	80# 4R 5B	8.61	0.10	21.87
20# 4R 6B	8.51	0.70	22.22	80# 4R 6B	4.71	0.18	22.15
20# 4R 7B	8.47	2.25	20.36	80# 4R 7B	4.40	0.30	19.95
20# 4R 8B	—	3.53	—	80# 4R 8B	—	3.10	—
20# 4R 9B	—	6.32	—	80# 4R 9B	—	4.19	—
20# 8R 4B	51.04	—	22.81	80# 8R 4B	31.22	—	25.77
20# 8R 5B	18.89	0.20	22.52	80# 8R 5B	7.55	0.05	21.67
20# 8R 6B	10.68	0.30	21.93	80# 8R 6B	4.41	0.04	19.97
20# 8R 7B	8.06	0.61	20.30	80# 8R 7B	2.22	0.11	19.03
20# 8R 8B	—	1.50	—	80# 8R 8B	—	0.80	—
20# 8R 9B	—	3.09	—	80# 8R 9B	—	1.28	—
20# 12R 4B	56.56	—	22.41	80# 12R 4B	39.14	—	25.73
20# 12R 5B	23.00	0.18	22.27	80# 12R 5B	11.15	0.03	20.54
20# 12R 6B	16.60	0.25	21.81	80# 12R 6B	4.16	0.04	19.70
20# 12R 7B	9.16	0.27	20.13	80# 12R 7B	2.43	0.05	18.41
20# 12R 8B	—	0.40	—	80# 12R 8B	—	0.10	—
20# 12R 9B	—	2.15	—	80# 12R 9B	—	0.17	—
40# 4R 4B	32.14	—	24.93	100# 4R 4B	18.67	—	25.43
40# 4R 5B	14.66	0.22	22.92	100# 4R 5B	3.80	0.09	21.99
40# 4R 6B	8.76	0.42	22.00	100# 4R 6B	3.57	0.09	22.13
40# 4R 7B	7.96	1.29	20.34	100# 4R 7B	3.58	0.23	19.68
40# 4R 8B	—	3.11	—	100# 4R 8B	—	2.88	—
40# 4R 9B	—	5.29	—	100# 4R 9B	—	4.36	—
40# 8R 4B	37.18	—	24.87	100# 8R 4B	23.65	—	25.12
40# 8R 5B	15.20	0.17	22.55	100# 8R 5B	8.44	0.06	21.67
40# 8R 6B	9.42	0.20	20.75	100# 8R 6B	2.88	0.04	19.68
40# 8R 7B	7.33	0.25	20.11	100# 8R 7B	2.84	0.06	18.99
40# 8R 8B	—	0.86	—	100# 8R 8B	—	0.71	—
40# 8R 9B	—	1.74	—	100# 8R 9B	—	1.15	—
40# 12R 4B	37.88	—	24.71	100# 12R 4B	37.51	—	25.09
40# 12R 5B	17.78	0.10	22.21	100# 12R 5B	8.36	0.02	20.57
40# 12R 6B	9.31	0.14	20.80	100# 12R 6B	2.79	0.06	19.30
40# 12R 7B	6.37	0.15	19.82	100# 12R 7B	1.82	0.07	18.43
40# 12R 8B	—	0.38	—	100# 12R 8B	—	0.13	—
40# 12R 9B	—	1.05	—	100# 12R 9B	—	0.32	—