泡沫瀝青冷再生是指采用專用的泡沫瀝青就地冷再生設(shè)備，對(duì)瀝青路面進(jìn)行現(xiàn)場(chǎng)冷銑刨，摻入一定數(shù)量的泡沫瀝青、水泥、水，經(jīng)過常溫拌合、攤鋪、碾壓等工序，一次性實(shí)現(xiàn)瀝青路面再生的技術(shù)。

It refers to the technology of on-site cold milling and planing of asphalt pavement by using special foam asphalt on-site cold recycling equipment, mixing a certain amount of foam asphalt, cement and water, and achieving one-time recycling of asphalt pavement through normal temperature mixing, paving, rolling and other processes.

　　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(shí)間，瀝青泡沫破裂。當(dāng)泡沫瀝青與集料接觸時(shí)，瀝青泡沫間化為數(shù)以萬計(jì)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(shí)，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(dá)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(diǎn)主要表現(xiàn)在可以對(duì)瀝青面層和基層材料進(jìn)行全厚式再生，同時(shí)將半剛性基層轉(zhuǎn)換為半柔性基層，符合國(guó)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(hù)時(shí)間短，施工期短，對(duì)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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