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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.

沥青

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

6080

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

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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

80100

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

6080

4060

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.

shanghai f1 track


yangtze river tunnel in shanghai


east china sea bridge

 east china sea bridge


beijing-shanghai high-speed railway

beijing-shanghai high-speed railway


bird’s nest (national stadium)

 bird’s nest (national stadium)


roads of shanghai world expo exhibition and convention center

roads of shanghai world expo exhibition and convention center


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