Durable, high-modulus modified asphalt uses hard asphalt produced from high-quality imported crude oil as raw material for the second deep processing, leveraging its high stiffness modulus, good fatigue resistance, and low-temperature performance. Jointly with scientific research institutions and downstream customers, we have built the six-lane full-thickness long-life asphalt pavement demonstration project - Zhanhua-Linyi Expressway. It is successfully applied to the Qingdao-Lanzhou Expressway reconstruction and expansion project, promoting a new generation of expressway construction. Achieving cost reduction, quality improvement and efficiency, we are leading the rapid development of expressway construction, maintenance, new materials and other industrial chains in Shandong. We inject new momentum and help construct strong transportation for China. Identified by Shandong Chemical and Chemical Society, the technical achievements have reached the international advanced level, and won the second prize of Shandong Chemical and Chemical Society Science and Technology Award in 2022, Shandong Province Quality Improvement Award, Binzhou Quality Improvement Award, and selected as an excellent scientific and technological achievement in the field of materials and equipment of the transportation industry of the China Highway and Transportation Society in 2022.
1. Stable raw materials: Hard asphalt produced from high-quality imported crude oil as raw material, which has excellent high- and low-temperature performance;
2. Excellent performance: Dynamic modulus (15 ℃, 10Hz) reaches 16,000MPa, fatigue times (10 ℃, 25Hz, 130με) up to 1.3 million times, with high stiffness modulus, great fatigue resistance and low-temperature performance;
3. Energy saving and cost reduction: Together with long-lie asphalt pavement, it reduces structure thickness by 39 cm, saves 23,000 tons of stone/km, reduces the full life cycle investment of more than 4 million yuan/km, and is expected to enhance the life of the pavement structure from 15 years to more than 35 years, with a carbon emission reduction of 50% in the full life cycle.
Dynamic modulus (15℃, 10Hz) 16000MPa
Fatigue times (10℃, 25Hz, 130με): >1.3 million times
Pavement thickness reduction: 39cm
Savings in gravel material per kilometer of pavement: 23,000 tons
Middle and lower layers of highways, heavily loaded or channelized roads
No. | Item | Unit | Technical Requirements | Test Method |
1 | Penetration (25℃, 100g, 5s) | 1/10mm | 25-35 | T 0604-2011 |
2 | Softening point (ring-and-ball method) ≥ | ℃ | 70 | T 0606-2011 |
3 | Ductility (10℃, 5cm/min) ≥ | cm | 20 | T 0605-2011 |
4 | Kinematic viscosity (175℃) ≥ | Pa · s | 1.0 | T 0625-2011 |
5 | Flash point (opening) ≥ | ℃ | 230 | T 0611-2011 |
RTFOT | ||||
6 | Mass loss | % | On-the-spot measurement | T 0610-2011 |
7 | Penetration ratio ≥ | % | 70 | T 0604-2011 |
8 | Residual ductility (10℃) ≥ | cm | 10 | T 0605-2011 |
9 | PG Grade | ﹣ | 82-22 | AASHTO M320-03 |