Showa Rekisei Industries Co.,Ltd. │ PRODUCT │ Straight Asphalt

Straight Asphalt is original bituminous material produced from crude oil through topping and vacuum distillation process eliminating light crude component. Basic binder for asphalt pavement.
Grades of straight asphalt are defined by ""JIS K2207"", among which we regularly carry the two most prevailing grades; Pen. 60-80 and 80-100, always ready for shipment from our own depots.

Products Line-up

Grade Name	Applied Standard	Outline/Application
Straight Asphalt 60-80	JIS K 2207	Penetration Index (Pen.) from 60 to 80. Used for general road pavement.
Straight Asphalt 80-100	JIS K 2207	Penetration Index (Pen.) from 80 to 100. Used for general road pavement.

JIS：Japanese Industrial Standards

Properties of Straight-Asphalt defined by JIS K2207

Property (unit)		40～60	60～80	80～100	100～120
Pen. (@25℃)	(1/10mm)	40～60	60～80	80～100	100～120
Softening Point	℃	47.0～55.0	44.0～52.0	42.0～50.0	40.0～50.0
Ductility (@15℃)	cm	>10	>100	>100	>100
Toluene Solubility	％	>99.0	>99.0	>99.0	>99.0
Flash Point	℃	>260	>260	>260	>260
Weight Loss after TFOT*	％	<0.6	<0.6	<0.6	<0.6
Retained Pen. after TFOT*	％	>58	>55	>50	>50
Pen. ratio after evaporation	％	<110	<110	<110	<110
Density (@15℃)	g/cm3	>1,000	>1,000	>1,000	>1,000

*Thin Film Oven Test