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泡沫瀝青就地冷再生技術特點

來源:http://www.aluminiumcanisters.com/ 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,使其發生膨脹,形成大量的瀝青泡沫,經過很短的時間,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.
當泡沫瀝青與集料接觸時,瀝青泡沫間化為數以萬計的“小顆粒”,散布于細集料的表面,形成黏有大量瀝青的細料填縫料,經過拌合壓實,這些細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場重新再生利用可作為泡沫瀝青冷再生混合料集料,并在壓實力的作用下形成具有一定路用性能的路面結構層。變廢為寶,從而達到保護環境、節約資源的作用;同時利用泡沫瀝青冷再生技術可以將傳統的半剛性路面結構改造成半柔性基層路面結構,從而優化路面組合形式,延長路面使用壽命.
冷再生機出租
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指標對瀝青發泡特性進行評價。膨脹率是指瀝青發泡膨脹時達到的最大體積與泡沫完全消失時的體積之比,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間,以 s 計,反映泡沫瀝青的穩定性。
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,半衰期則越長越好,以便發泡瀝青與集料有較長時間進行拌和,提高發泡瀝青混合料的質量。評價瀝青發泡效果時,膨脹率和半衰期是兩個密不可分的指標,最好的發泡效果應使兩個值均比較大,而不能單獨采用一個指標來控制。建議發泡瀝青的膨脹率≥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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