Road recycling with Ammann in China

A Chinese road builder is planning to add recycling capabilities to its existing asphalt-mixing plants to meet new environmental guidelines. Another benefit of this approach is that the firm will also be able to substantially reduce its costs CSCEC Road & Bridge is a highly successful business in China and utilises Ammann Uniglobe Asphalt-Mixing Plants for its operations. The firm says that the results have been impressive and during one key road expansion project, one of its Uniglobe plants produced 700
February 27, 2019 Read time: 3 mins
Ammann plants have been upgraded with the addition of RAP circuits for a client in China
A Chinese road builder is planning to add recycling capabilities to its existing asphalt-mixing plants to meet new environmental guidelines. Another benefit of this approach is that the firm will also be able to substantially reduce its costs


CSCEC Road & Bridge is a highly successful business in China and utilises 6791 Ammann Uniglobe Asphalt-Mixing Plants for its operations. The firm says that the results have been impressive and during one key road expansion project, one of its Uniglobe plants produced 7000tonnes in a single day. The plant also managed to deliver an average of 5000tonnes/day for the duration of the project. Both numbers are thought to be all-time production highs for China.

However, production output is not the only key factor for asphalt plants in China. New regulations are requiring an increasing use of ARP in asphalt mixes, so as to improve the environmental profile of construction operations.

“In recent years, as more and more public-private partnerships are coming out, we also are paying more attention to recycling technology,” said Zhou Shixin, chairman of a CSCEC Road & Bridge branch in Shijiazhuang City.

The company has owned four productive Ammann Uniglobe plants for some time but these machines are still well within their effective operating life and have many years of productive use ahead of them before requiring replacement. As a result CSCEC Road & Bridge opted to add recycling capabilities to its existing Ammann plants

Ammann has considerable expertise in upgrading its plants. The upgrade for the four plants has included the addition of an RAH drum that heats the RAP before depositing it in the mixer. When using RAP in a mix it is necessary to have the separate RAH drum because the material has to be gently preheated.. This is because the valuable bitumen in the RAP can be damaged when overheated. After preheating, the RAP is deposited in the mixer, where it is then blended with the hot virgin aggregate. The result is a quality mix with a high percentage of recyclables.

Ammann has a great deal of experience in making the plant upgrades, and was able to complete the work in the off-season, so as not to affect the firm’s production during its busy period.

Adding the RAP capability has proven effective for the customer as this method is considerably less expensive than purchasing a new plant with recycling ability. According to Zhou, this has provided a highly cost-effective solution.

The company appreciates the green approach and the costs savings. “We can mill our own material for public-private partnerships and reduce costs by 20-30%,” Zhou said.

Materials

For more information on companies in this article

Related Content

  • Easy operating
    July 31, 2012
    Modern asphalt plants are a far cry from the early models, and are capable of producing a wide variety of mixes at the touch of a button. Patrick Smith reports Cutting-edge software-based control technology makes today's asphalt mixing plants simple and efficient to operate. The tightening of clean air regulations is reducing the emissions from the plants, and the current focus is on the goal of raising the processed portion of reclaimed asphalt (RA) towards 100%, says Ammann Group, which has been involved
    Read More
  • Asphalt plant for Turkish highway project
    June 27, 2018
    An asphalt plant from Ammann is playing a key role in the construction of a new Turkish highway. An important factor in the selection of the plant for the construction of Turkey’s Northern Marmara Motorway was its ability to utilise fibres. A large portion of the motorway, which serves as a bypass of Istanbul, has been completed. Handling a good deal of the remaining work is Nalbantolu naat, a family-owned business founded in 1995. The company has completed a number of high-profile projects, including
    Read More
  • Bitumen technology: from potholes to PMB plants
    November 21, 2014
    This month we look at how warm mix is helping to pave dirt roads, a new way to tackle potholes, and bring news of a new distribution centre for the UK - Kristina Smith reports The creation of a new mix design, incorporating MWV’s warm mix additive Evotherm, is providing cost-effective solutions for dirt roads in the US’s Charleston County. The first stretch to be paved with the new porous paving in April this year, Joseph White Road in the town of Adams Run, resulted in the estimated US$1.1 million construc
    Read More
  • Predicting a big increase in asphalt production
    July 4, 2012
    With new roads to be built and existing ones to be maintained, one company is predicting a big increase in asphalt production Asphalt plant manufacturer Ammann says that four factors in particular will shape the future of the asphalt industry. The company, which has sold its first JustBlack asphalt mixing plant to Costa Rica through its Spanish distribution partner, EMSA, says that many more roads have yet to be built in the world. "Building the global road network will provide work for many generations to
    Read More

Highlighted Content