泡沫瀝青冷再生技術(shù)是對回收瀝青路面材料和水泥穩(wěn)定基層材料進行再生利用。不僅能夠充分發(fā)揮舊瀝青混合料的“剩余價值”，促進舊路面材料的循環(huán)利用，保護生態(tài)環(huán)境，減少資源浪費，同時，也將半剛性路面結(jié)構(gòu)轉(zhuǎn)為半柔性結(jié)構(gòu)，延長了道路瀝青的使用壽命。

The cold recycling technology of foam asphalt is to recycle the recycled asphalt pavement materials and cement stabilized base materials. Not only can it fully tap into the "residual value" of old asphalt mixtures, promote the recycling of old pavement materials, protect the ecological environment, and reduce resource waste, but it also transforms semi-rigid pavement structures into semi-flexible structures, extending the service life of road asphalt.

　　泡沫瀝青又叫膨脹瀝青，是將一定的常溫水注入熱瀝青，使其發(fā)生膨脹，形成大量的瀝青泡沫，經(jīng)過很短的時間，瀝青泡沫破裂。當(dāng)泡沫瀝青與集料接觸時，瀝青泡沫間化為數(shù)以萬計的“小顆?！?，散布于細(xì)集料的表面，形成黏有大量瀝青的細(xì)料填縫料，經(jīng)過拌和壓實，這些細(xì)料能填充于粗料之間的空隙，并形成類似砂漿的作用，使混合料達到穩(wěn)定。

Foam asphalt, also called expanded asphalt, is to inject a certain amount of normal temperature water into the hot asphalt to expand it and form a large amount of asphalt foam. After a short time, the asphalt foam bursts. When the foam asphalt contacts with the aggregate, the asphalt foam turns into tens of thousands of "small particles" and spreads on the surface of the fine aggregate to form a fine joint filler with a large amount of asphalt. After mixing and compaction, these fine materials can fill the gap between the coarse materials and form a mortar like effect to stabilize the mixture.

　　泡沫瀝青冷再生混合料可作為瀝青下面層和基層使用，并表現(xiàn)出良好的性能。其優(yōu)點主要表現(xiàn)在可以對瀝青面層和基層材料進行全厚式再生，同時將半剛性基層轉(zhuǎn)換為半柔性基層，符合國際柔性路面基層的潮流；泡沫瀝青再生技術(shù)僅需加熱瀝青，不需要加熱和烘干集料。從而節(jié)省能源；與半剛性基層相比，其養(yǎng)護時間短，施工期短，對交通影響小。

The foam asphalt cold recycling mixture can be used as the asphalt lower layer and base course, and shows good performance. Its advantages mainly lie in the ability to fully regenerate the asphalt surface layer and base material, while converting the semi-rigid base layer into a semi-flexible base layer, which is in line with the international trend of flexible pavement base layers; The foam asphalt recycling technology only needs to heat the asphalt, and does not need to heat and dry the aggregate. So as to save energy; Compared with semi-rigid base, it has shorter maintenance time, shorter construction period, and less impact on traffic.

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