Miniaturization will become an inevitable trend in the development of on-site thermal regeneration units

With the arrival of large-area highway maintenance period in China and the continuous attention of the state to energy saving and environmental protection technology, asphalt pavement on-site thermal regeneration unit will usher in a broad market prospect, and its promotion and application is bound to be strongly supported by national policies. Miniaturization of existing equipment to adapt to new market demand will become an inevitable trend in the development of on-site thermal regeneration units.
1. Policy support
The national "Energy Conservation and Environmental Protection Industry Development Plan" clearly puts energy-saving technology and equipment, advanced environmental protection technology and equipment as key support objects, and provides policy support in fiscal, tax, financial and other aspects. As a kind of energy-saving and environmental protection equipment with international advanced level, the on-site thermal regeneration unit can use 100% of the original road materials, so as to effectively protect the environment, prevent the over-exploitation of resources, and bring huge economic, social and environmental benefits for the development of the national economy, which is in line with the sustainable development policy of China's vigorous development of circular economy. We should seize the opportunity to comprehensively improve and upgrade the existing units and promote them nationwide.
2, grade roads and urban roads on the urgent need for on-site thermal regeneration equipment
By the end of 2011, the total mileage of China's roads exceeded 4 million kilometers, of which the total mileage of grade roads was more than 3.3 million kilometers, and the total mileage of road maintenance reached 3.9 million kilometers, accounting for about 97% of the total mileage of roads. With the increasing number of specialized maintenance companies in China, how to solve more than 2 million tons of waste asphalt mixture produced in the course of road construction every year has become an urgent problem for maintenance companies to solve.
Field heat regeneration technology of asphalt pavement has wide applicability to solve ruts, vertical and horizontal cracks, pits, oil flooding, pushing and other early diseases that are prone to occur on grade highways, and it is easy to play the characteristics of this technology in grade highway maintenance, such as economy, high efficiency, fast, environmental protection, short traffic blocking time and small impact on traffic. The miniaturization and improvement of the existing thermal regeneration units can meet the construction requirements of grade highways and urban roads, and become an excellent way to solve the waste problem. It can be seen that compared with 85,000 kilometers of highways, grade highways and urban roads have a more urgent market demand for on-site thermal regeneration equipment.
3, the significance of miniaturization improvement of on-site heat regeneration units
At the beginning of the introduction of on-site thermal regeneration units in China, many imported equipment and early domestic equipment in the construction process there are insufficient heating, uneven mixing, inaccurate ratio and other problems, the quality of recycled road surface is difficult to meet the requirements of the specification, so that many experts have doubts about the promotion of the equipment, but with the continuous improvement and improvement of the equipment, these problems are gradually solved. For example, the on-site thermal regeneration unit developed by Shandong Road and Bridge Group adopts multi-step heating, forced stirring and accurate metering technologies, which makes the temperature and quality of recycled materials greatly improved, and many indicators of recycled pavement can be comparable to those of new paved roads.
On the basis of the basic maturity of the technology, the miniaturization of the existing equipment is of great significance to the promotion of on-site thermal regeneration technology and equipment, and even to the development of highway maintenance in our country.
First, the unit miniaturization can effectively save production costs, reduce the acquisition costs of construction enterprises, and reduce the threshold for enterprises to enter the field of on-site thermal regeneration;
Second, the unit miniaturization can effectively reduce the size of the equipment, solve the limitations of the unit in the construction process of grade highways and urban roads, and improve the flexibility and overall coordination of the single machine.
Third, the unit miniaturization can reduce the weight of the equipment, reduce the damage caused by overload on grade highways and urban roads during the construction process, and is conducive to the promotion of the equipment in this field;
Fourth, unit miniaturization can reduce the difficulty of equipment operation, reduce the number of operators and labor intensity, so as to reduce the technical threshold of the equipment and facilitate promotion.
In summary, the miniaturization of on-site thermal regeneration equipment is a prerequisite for the promotion of on-site thermal regeneration technology in grade highways and urban roads, and it is also the most convenient solution for grade highways and urban roads to solve problems such as resource waste, environmental pollution and traffic impact.