In-situ heat regeneration remixing and paving technology of asphalt pavement

Abstract

The invention relates to an in-situ heat regeneration remixing and paving technology of an asphalt pavement, which is characterized by particularly comprising the following steps of 1, construction preparation: 1) mechanical equipment and instrument debugging and maintenance preparation, 2) raw material preparation and technical index detection, and 3) pavement sweeping and guide line scribing, 2, paved antiskid layer asphalt mixture mixing, 3, paved antiskid layer asphalt mixture transport, 4, pavement heating, 5, pavement scarifying, 6, regenerant spraying and stirring, 7, spreading, 8, rolling, 9, traffic access, and 10, technical index check. The curing construction technology of the asphalt pavement can allow waste to be recycled; the original pavement is not required to be milled; the whole endurance and the service life of the pavement are improved and prolonged; the construction speed is high; the traffic access speed is high; the safety and the efficiency of the transport are improved; the cost is saved; occupational health is facilitated; and the technology is environment-friendly and energy-saving.

Description

Technical field [0001] The invention relates to the maintenance and repair construction field of expressways and municipal roads, in particular to an in-situ thermal regeneration, remixing and paving process for asphalt pavement. Background technique [0002] Asphalt pavement hot-in-place regeneration remixing and paving construction technology is mainly a maintenance technology for old asphalt pavement. It is re-mixed with materials such as reheating, harrowing, and adding additives to restore the original asphalt pavement function It is a kind of recycling technology, and at the same time of paving, the construction technology of adding a layer of asphalt concrete pavement structure layer simultaneously. A large number of expressways in our country have entered the maintenance period of roads, and most of these roads are asphalt roads, and more than 200 million tons of waste will be generated every year. The disposal of waste will generate a lot of industrial waste, and the dis...

AI Technical Summary

Problems solved by technology

A large number of highways in my country have entered the road maintenance period, and these roads are mostly asphalt roads, and more than 200 million tons of waste will be generated every year. Waste disposal will generate a large amount of industrial waste, and waste discharge will also cause land occupation and pollution. The use of new pavement materials will also generate more energy waste and exhaust emissions

The road is damaged, and re-paving not only wastes resources but also causes re-pollution of the environment. At the same time, it is necessary to mill the original road surface and transport equipment and materials, which consumes a lot of manpower and material resources, greatly increases the cost, and affects the normal use of traffic roads. hamper traffic flow

[0003] The existing heat-in-place regeneration process of asphalt pavement generally does not add regenerant and new asphalt mixture, the effect of eliminating rutting is not obvious, and it cannot effectively improve the smoothness of the cross slope of the road surface. It is only suitable for asphalt pavement with construction defects that have just opened to traffic. There is also a remixing type hot-in-place regeneration unit that heats and loosens the road surface, adds regeneration agent and new asphalt mixture, and then mixes, paves, and compacts. It plays an improving role, improving the original road surface gradation by adding new materials, and also improving the aging condition of the original road surface asphalt

Images