Hot-in-place recycling technology helps road maintenance technology to be more low-carbon

Regeneration technology is a kind of green、Environmentally friendly maintenance technology。Hot in-place recycling technology（Short nameHIR）It is a kind of thermal regeneration technology.。

Past，After road surface excavation，Backfill by ordinary method，There are many technological processes，Long maintenance time、The cost is high，Waste disposal is easy to cause pollution.。In addition, the common maintenance method of asphalt pavement in our country is milling and resurfacing.，This technology has many construction processes.，The construction period is long，It is easy to produce dust in the production process of asphalt mixture、Flue gas, etc，Causing air pollution、Waste of resources，Hot in-place recycling technology is much more environmentally friendly.。

Asphalt pavement hot in place technology is mainly used to repair asphalt pavement network crack.、Rut、Aggregate falling off and other diseases,Asphalt is non-degradable.，Hot-in-place recycling process avoids the pollution of waste asphalt mixture to nature.，Protect the ecological environment。Hot-in-place recycling technology uses dedicated hot-in-place recycling equipment.，On-site heating of asphalt pavement、Scarify，Mixing a certain amount of new asphalt in situ、New bituminous mixture、A regenerant, etc，Mixing at high temperature in hot state、Spreading、Rolling and other processes，100%Old asphalt mixture is used，The cost of pavement maintenance is significantly reduced.，The cost is 30% less than that of the traditional proces%。Not only that，The hot in-place recycling process also has the characteristics of high efficiency and rapidness.，There is no need to interrupt traffic in the construction section，After road compaction，It only takes a short time to cool down.，The new road will be passable.，Fully implemented“Excavation on the same day、Backfill on the same day、It opened to traffic on the same day”。Two lanes completed by construction、Activate in three hours.，Minimize the traffic disturbance caused by pavement maintenance，100% of the old asphalt mixture can be realized%Make use of,The construction speed is fast,The traffic impact is small,2—It can pass after 3 hours.。

Popularization and application of regeneration technology，Resources can be saved more effectively.，So that stone resources can be fully recycled.，Reduce damage to the environment caused by stone mining，At the same time, it can reduce energy consumption and reduce carbon emissions.。Hot in-place recycling technology is also an environmentally friendly technology.，It has low carbon、Environmental protection、Energy saving、And that construction cost is low、Fast、Less traffic interference and the like.，To promote the realization of carbon peak、Carbon neutrality targets play an important role。

Calculated by the authoritative department，Application of hot in-place recycling and curing technology，Carbon emissions are less than 10% of traditional proces%，And achieve zero pollution.，Don't add to the atmosphere.“Haze”。At present，Many provinces and cities in China are expressway.、Urban roads and national and provincial highways are already using this technology.，Believe in the promotion and use of this technology.，It will not only cultivate new industries of renewable green maintenance,、It is meaningful to promote the transformation and upgrading of traditional highway maintenance.，At the same time, the peak of carbon is realized.、The achievement of carbon neutrality is even more relevant.。

Previous: Facing the first snowfall, Beijing expressway is equipped with one set of snow removal equipment per kilometer.

Next: North Shandong Branch of Tongliao Highway Maintenance Center takes many measures to ensure the safety and smoothness of road maintenance