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泡沫瀝青就地冷再生技術(shù)特點(diǎn)

來源：http://www.baoxiaomei.cn/ 日期：2022-01-14

泡沫瀝青又叫膨脹瀝青，是將一定的常溫冷水注入熱瀝青，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。

Foamed asphalt, also called expanded asphalt, is a cold water injected into the hot asphalt at certain normal temperature, causing it to expand and form a large amount of asphalt foam. After a short period of time, the asphalt foam burst.

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“小顆粒”，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)過拌合壓實(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。

When the foamed asphalt is in contact with aggregate, the asphalt foam is interchanged into tens of thousands of "small particles", dispersed on the surface of the fine aggregate, forming a fine material filling material with a large amount of asphalt. After mixing and compacting, these fine materials can fill the gap between coarse materials and form a mortar like function to make the mixture stable.

廢棄的路面銑刨材料在銑刨現(xiàn)場(chǎng)重新再生利用可作為泡沫瀝青冷再生混合料集料，并在壓實(shí)力的作用下形成具有一定路用性能的路面結(jié)構(gòu)層。變廢為寶，從而達(dá)到保護(hù)環(huán)境、節(jié)約資源的作用;同時(shí)利用泡沫瀝青冷再生技術(shù)可以將傳統(tǒng)的半剛性路面結(jié)構(gòu)改造成半柔性基層路面結(jié)構(gòu)，從而優(yōu)化路面組合形式，延長(zhǎng)路面使用壽命.
冷再生機(jī)出租

The waste road milling material can be used as a recycling material for foamed asphalt cold recycling mixture, and it will form a pavement structure layer with certain pavement performance under the pressure strength. Turn waste into treasure, so as to protect the environment and save resources; At the same time, the cold recycling technology of foamed asphalt can transform the traditional semi-rigid pavement structure into semi flexible base pavement structure, so as to optimize the pavement combination form and prolong the service life of pavement.

目前主要采用膨脹率和半衰期兩個(gè)指標(biāo)對(duì)瀝青發(fā)泡特性進(jìn)行評(píng)價(jià)。膨脹率是指瀝青發(fā)泡膨脹時(shí)達(dá)到的最大體積與泡沫完全消失時(shí)的體積之比，反映泡沫瀝青的黏度大小。半衰期是指泡沫瀝青從最大體積降到最大體積的一半需要的時(shí)間，以 s 計(jì)，反映泡沫瀝青的穩(wěn)定性。

At present, the expansion rate and half-life are mainly used to evaluate the foaming characteristics of asphalt. The rate of expansion refers to the ratio between the maximum volume of asphalt expansion and the volume when the foam completely disappears, which reflects the viscosity of the foamed asphalt. The half-life is the time required to reduce the volume of foam asphalt from the maximum volume to the maximum volume. It reflects the stability of foamed asphalt in the form of S.

為了使發(fā)泡瀝青與常溫濕集料拌合充分，膨脹率越大越好，半衰期則越長(zhǎng)越好，以便發(fā)泡瀝青與集料有較長(zhǎng)時(shí)間進(jìn)行拌和，提高發(fā)泡瀝青混合料的質(zhì)量。評(píng)價(jià)瀝青發(fā)泡效果時(shí)，膨脹率和半衰期是兩個(gè)密不可分的指標(biāo)，最好的發(fā)泡效果應(yīng)使兩個(gè)值均比較大，而不能單獨(dú)采用一個(gè)指標(biāo)來控制。建議發(fā)泡瀝青的膨脹率≥10 倍，半衰期≥8s。

In order to fully mix foamed asphalt and normal temperature wet aggregate, the greater the expansion rate, the better, and the longer the half-life, so that foamed asphalt and aggregate can be mixed for a long time to improve the quality of foamed asphalt mixture. When evaluating the foaming effect of asphalt, the expansion rate and half-life are two inseparable indexes. The best foaming effect should make both values relatively large, but can not be controlled by one index alone. It is recommended that the expansion rate of foamed asphalt ≥ 10 times and the half-life ≥ 8s.

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