Dynapac compactors for Vietnam Transport Corridor
Six of the compactors have been purchased by the Vietnam Expressway Corporation, a state-owned company formed under the Ministry of Transport for the development of expressways and tollways, while the other two units have been purchased by Vietnam’s Song Da Corporation, which comes under the Ministry of Construction and which undertakes infrastructural projects.
The machines are all for use on the Kunming-Hai Phong Transport Corridor, two tollways that will link up to provide a continuous highway corridor between the Chinese border and the Vietnamese port of Hai Phong, via Hanoi, thereby providing a route both for northern Vietnamese traffic and for goods from southern China.
Most of the Dynapac rollers are CA250D soil compactors, which V. Long director Nguyen Anh Tuan says are ideally suited to conditions in Vietnam and to Vietnamese highway construction standards. He said the decision had been made to standardise on the CA250D so that throughout the length of the project the working specifications and parameters were consistent. Another major factor was the after-sales service.
The Dynapac CA250D is a single-drum vibratory soil compactor powered by a Cummins water-cooled turbo diesel engine with after-cooler, and having a static linear load of 26.30 kg/cm. A medium-range compactor, it is designed for compacting all soil types except for rockfill, and is especially suitable for highway construction.
The US$1.22 billion four-lane 25.5 m wide Hanoi-Lao Cai highway will run from the mountainous northern province of Lao Cai, at the border with China, to Noi Bai International Airport at Hanoi, a distance of 264 km, and is being funded by the Asian Development Bank.
Vietnam Expressway Corporation is carrying out the technical designs, working in conjunction with Pacific Consultants International of Japan, and has issued specifications for the compaction equipment.
Posco Engineering & Construction of Korea is the contractor for Hanoi-Lao Cai Highway Package A1, work having begun on April 25 this year, and the first two Dynapac compactors to arrive have been deployed on this contract.
This section covers a distance of 27km, starting from the international airport site at Noi Bai, and has four lanes. The construction work is worth US$150 million, with a contract period of 40 months and completion scheduled for August 2012.
The two machines are compacting the 27 cm thick clay base course of the highway, where it passes through flat rural areas and paddy fields. The standard specification for construction of this road along its entire length is for the roller to be used for a total of eight hours on the clay base course.
For five hours of this time the roller is being used in static mode, with the final three hours in vibrating mode. The eventual compaction requirement is 95 percent.
The two Dynapac CA250D units purchased by Song Da Corporation are being deployed on the 105 km Hanoi to Hai Phong highway, where other units being delivered early next year will also be used.
Funding for this highway is more than US$2 billion, contributed by the Vietnam Infrastructure Development and Financial Investment Corporation, the Bank for Investment and Development of Vietnam, the Bank for Foreign Trade of Vietnam and other sources.
This is the first order V. Long has placed for Dynapac roller compactors, the company having become Dynapac’s Vietnam distributor last year and the order having been placed in April this year. V. Long’s headquarters is in Hanoi, and there is a new branch office in Ho Chi Minh City.
The Lao Cai to Hanoi highway will be the longest stretch of international standard four-lane highway in Vietnam and will shorten the travel time from the current nine hours to three hours.
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Dynapac is part of the Atlas Copco Group within the Atlas Copco Road Construction Equipment division. We are experts on asphalt, soil and concrete applications, committed to customer performance worldwide. Products and solutions are marketed under the Dynapac brand and complementary brands. Headquartered in Stockholm, Sweden, the division has production facilities in Europe, USA, South America and Asia.