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I. Products and engineering application of Sinopec’s Donghai Asphalt

1. Brand value

“Donghai” is one of the most influential asphalt brands in China. It was awarded the title of “China Famous Brand” in 2007. In May 2021, according to China Brand Evaluation, Donghai Asphalt enjoyed a brand value of 1.463 billion yuan.

2. Variety and quality

In order to ensure the excellent quality of Donghai Asphalt products from crude oil procurement to engineering application, the manufacturers and sellers of Sinopec have established a quality assurance system for Donghai Asphalt, and implemented strict quality control measures in crude oil procurement, asphalt production, product sales, transportation and storage, construction and application. Therefore, the excellent product quality can be ensured before, during and after production, and the excellent service can also be ensured before, during and after sales. The quality and performance of Donghai products are known for being consistent.

Sinopec produces nearly 70 kinds of asphalt products such as road petroleum asphalt, SBS modified asphalt, SBR modified asphalt, emulsified asphalt, emulsified modified asphalt, colored asphalt and building asphalt in accordance with national standards and Technical Specifications for Construction of Highway Asphalt Pavements (JTG F40-2004) by the Ministry of Transportation of China.

Petroleum asphalts for heavy traffic road pavement: Using imported crude oil resources suitable for the production of asphalts for heavy traffic road petroleum, Sinopec produced Donghai asphalts for heavy traffic road pavement in accordance with Technical Specifications for Construction of Highway Asphalt Pavements (JTG F40-2004) and Petroleum Asphalts for Heavy Traffic Road Pavement (GB/T 15180-2010) by the Ministry of Transportation of China. The product quality is stable with good climate adaptability, load adaptability and durability.

See Table 1 and Table 2 for the quality of 70A asphalt produced by representative enterprises.

Table 1 The quality of 70A asphalt produced by representative enterprises

Item		JTG F40-2004 Technical requirements	Company 1	Company 2	Company 3	Company 4	Company 5
Penetration (25℃, 100g, 5s), 0.1mm		60～80	77	75	75	71	75
Penetration Index (PI)		-1.5～+1.0	-0.97	-0.41	-0.51	-0.6	+0.19
Softening Point (ring and ball method), ℃		≥46	48.0	49.0	49.0	49.5	50.5
Extensibility (10℃, 5cm/min), cm		≥20	84	37	31	33	37
Extensibility (15℃, 5cm/min), cm		≥100	>100	>100	>100	>100	>100
Dynamic Viscosity at 60℃, Pa.s		≥180	211.5	233.6	243.7	239.9	278.0
Flash Point, ℃		≥260	334	347	329	339	333
Solubility, %		≥99.5	99.96	99.93	99.85	99.92	99.88
Density (15℃), g/cm³		Measured Value	1.038	1.033	1.032	1.041	1.033
Wax Content, %		≤2.2	2.1	1.9	1.7	1.4	1.9
Thin Film Oven 163℃, 5h	Quality Change, %	±0.8	-0.302	-0.085	-0.163	0.033	-0.232
	Penetration Ratio, %	≥61	64.9	66.7	72.0	69.0	69.3
	Extensibility (10℃), cm	≥6	7	8	7	7	6

Table 2 The quality of 90A asphalt produced by representative enterprises

Item		JTG F40-2004 Technical requirements	Company 1	Company 2	Company 3	Company 4
Penetration (25℃, 100g, 5s), 0.1mm		80～100	92	94	84	87
Penetration Index (PI)		-1.5～+1.0	-0.93	-1.30	-1.4	-0.32
Softening Point (ring and ball method), ℃		≥45	46.5	47.0	46.5	49.0
Extensibility (10℃, 5cm/min), cm		≥45	>100	>100	>100	67
Extensibility (15℃, 5cm/min), cm		≥100	>100	>100	>150	>100
Dynamic Viscosity at 60℃, Pa.s		≥160	179.6	176.3	159	185.1
Flash Point, ℃		≥260	331	330	>300	332
Solubility, %		≥99.5	99.94	99.94	99.81	99.93
Density (15℃), g/cm³		Measured Value	1.035	1.033	1.032	1.031
Wax Content, %		≤2.2	1.7	2.1	1.8	1.2
Thin Film Oven 163℃, 5h	Quality Change, %	±0.8	-0.046	-0.128	0.020	-0.288
	Penetration Ratio, %	≥57	69.6	67.0	62	66.7
	Extensibility (10℃), cm	≥8	14	12	12	9

Modified asphalt: Donghai has found a unique approach in the research and development of polymer modified asphalt products with high quality and low cost, and achieved a solid leap in the development of modified asphalt. Donghai products have passed the ministerial appraisal, and as experts rated, Donghai “pioneered the technology in China with product performance reaching the advanced international standards”. The quality of modified asphalt produced by Sinopec is shown in Table 3.

Table 3 The quality of SBS Modified Asphalt produced by Sinopec

Item		JTG F40-2004 I-C Technical requirements	JTG F40-2004 I-D Technical requirements	I-C Modified Asphalt of Sinopec	I-D Modified Asphalt of Sinopec
Penetration (25℃, 100g, 5s), 0.1mm		60～80	40～60	76	51
Penetration Index (PI)		≥-0.4	≥0	+1.04	+0.31
Softening Point (ring and ball method), ℃		≥55	≥60	79.5	84.5
Extensibility (5℃, 5cm/min), cm		≥30	≥20	42	30
Kinematic Viscosity (135℃), Pa.s		≤3	≤3	1.8	2.3
Flash Point, ℃		≥230	≥230	327	302
Solubility, %		≥99	≥99	99.88	99.70
Elastic Recovery (25℃), %		≥65	≥75	95	96
Separation, 48h Softening Point Difference, ℃		≤2.5	≤2.5	0.2	0.4
Thin Film Oven 163℃，5h	Quality Change, %	±1.0	±1.0	+0.011	-0.04
	Penetration Ratio, %	≥60	≥65	78	76
	Extensibility (5℃), cm	≥20	≥15	26	17

Special asphalt: Sinopec has strengthened technical research and development, and successively developed high-tech asphalt products such as Donghai special asphalt for sea-crossing bridge, environmentally friendly and flame-retarding asphalt for tunnel, high viscosity asphalt, rubber asphalt and hard-grade asphalt, meeting the diversified needs of customers.

Emulsified asphalt: emulsified asphalt for highway, special emulsified asphalt for high-speed railway, waterproof emulsified asphalt for construction and other new products.

II. Products and engineering application of Sinopec’s Donghai Asphalt

With excellent product quality and best services, Donghai Asphalt has been committed to serving the national infrastructure construction and actively participating in the competition in the high-end asphalt market. The projects done by Donghai Asphalt include international F1 track, East China Sea Bridge, Olympic Games, World Expo and high-speed railway. It has successively participated in the construction of more than 300 national key high-grade highways and urban roads and 17 national high-speed railways, highlighting the brand effect of Donghai Asphalt. Some key projects are shown in Picture 1 ~ Picture 6.