D&G Technology’s recycling drum dryer technology deployed in Shanghai-Kunming Highway pavement maintenance project
Pioneering national standard technology can save RMB3.5 million
D&G Technology Holding Company Limited (“D&G Technology” or the “Group” ; Stock code: 1301), a leading medium-to-large scale asphalt mixing plant manufacturer and service provider in China, is closely collaborating with its customer, Hunan Road & Bridge Construction Group Co., Ltd. (“HNRB”), in a large pavement maintenance project at the Hunan Litan section of the main national, Shanghai-Kunming Highway. The project is deploying the Group’s self-developed “drum dryer recycling technology” and is the first asphalt pavement project that adopts environmentally-friendly and low emission hot-mix plant recycling technology, which can save RMB3.5 million of material costs compared with using conventional technology.
The Shanghai-Kunming Highway is the main national highway of 2,348km long that links Shanghai and Kunming passing through Jiaxing, Hangzhou, Zhuji, Jinhua, Quzhou, Shangrao, Yingtan, Nanchang, Xinyu, Yichun, Pingxiang, Zhuzhou, Xiangtan, Shaoyang, Huaihua, Kaili, Guiyang, Anshun, Panxian and Qujing. HNRB, a client of D&G Technology is responsible for the maintenance works of the Litan-Xiangtan section exceeding 130km of the Hunan Litan section of the Highway, The recycling technology is to be used in a section around 88km long. Around 35,000 tonnes of asphalt mixture is needed to resurface the 3.9m-wide lane on each side with a thickness of 4cm. The project is expected to take two months. After completion, the highway will boast a better loading capacity, friction performance, rut-resistance, noise reduction and prevention of water penetration. This asphalt pavement project that adopts environmentally-friendly and low emission hot-mix plant recycling technology in China with a planned start in July, requiring pioneer national standard technology.
Ms. Glendy CHOI, Executive Director and Chief Executive Officer of D&G Technology, said, “After assessing the technological requirement of the project, the Group added a SR190 double drum recycling plant with 50% designed RAP added capacity on top of one asphalt mixing plant. The plant will produce around 35,000 tonnes of asphalt mixture with 30% RAP. Compared with conventional pavement materials, one tonne of this mixture can save around RMB100 material cost which means this project can save around RMB 3.5 million of material cost. If the old material is not recycled, high disposal and landfill charge will be incurred and the environment will be polluted.”
She added, “The surface of the highway is in direct contact with vehicle tires, rainwater especially acid rain, under direct sunlight and is subject to high temperature differential between summer and winter. It also has higher requirements on appearance, accuracy of blending, uniformity of mixture, oil-stone ratio and physical specifications of mixture, so except for D&G Technology, no other domestic equipment manufacturer can meet these requirements. The SR190 double drum recycling plant provided by the Group adopts a newly-designed drum dryer with embedded heat bushing and the form and arrangement of its paddles within the drum are adjusted and optimised which can effectively enhance the drum’s heating efficiency and solve the asphalt aging problem. A recycling product using a drum dryer may process the fine and coarse RAP separately, gradually increase the temperature, retard asphalt aging and reduce adhesion. As at the current time, the equipment has been installed, and is ready to start operation in July 2015.”
About D&G Technology Holding Company Limited
D&G Technology is a leading medium-to-large scale asphalt mixing plant manufacturer and service provider in China. Based on the sales volume, the Group ranked second with a market share of approximately 13.8% in 2013. The Group’s core products include conventional hot-mix asphalt mixing plants and hot-mix asphalt mixing recycling plants. Asphalt mixtures produced by these plants are used in construction and maintenance of all grades of roads and highways. The Group also offers asphalt mixing plant customer services including sales of spare parts and components and provision of equipment modification services and leasing of asphalt mixing plants through operating leases. With headquarters in Hong Kong and a production base in Langfang, Hebei, D&G Technology is certified as a high-technology enterprise in Hebei and enjoys a preferential enterprise income tax rate of 15%. Its products are sold to most provinces, municipalities and autonomous regions in China as well as 18 overseas countries. It has sold more than 300 units of asphalt mixing plants to customers in China and overseas emerging markets and developed countries including Australia, Russia and India, regions including Southeast Asia and the Middle East, as well as countries in Africa. The Group is also one of the suppliers of asphalt mixing plants to a number of major infrastructure projects in China, including Beijing-Tibet Highway (京藏高速), Beijing-Hong Kong-Macau Highway (京港澳高速), Jiaozhou Bay Bridge (膠州灣大橋) and Hangzhou Bay Bridge (杭州灣大橋).