行業資訊

瀝青混合料發生集料離析及溫度離析后的處理

來源：http://www.china-gmdg.com/ 日期：2022-07-11

如果在施工過程中解決不好，不僅影響瀝青路面的施工質量和工程成本，而且會給后期瀝青路面的使用和維護帶來很高的代價，造成大量資金的浪費。因此在實際工程中應對瀝青路面病害認真分析，比如瀝青混合料發生集料離析及溫度離析后的處理。

If it is not solved well in the construction process, it will not only affect the construction quality and project cost of asphalt pavement, but also bring a high cost to the later use and maintenance of asphalt pavement, resulting in a waste of a lot of funds. Therefore, the asphalt pavement diseases should be carefully analyzed in the actual project, such as the treatment of asphalt mixture after aggregate segregation and temperature segregation.

瀝青混合料碾壓成型前的處理方法。

Treatment method of asphalt mixture before rolling and forming.

①松鋪的瀝青混合料局部呈塊狀出現粗骨料集中時，可采用換料處理，換料后的松鋪厚度和密實度應與原松鋪層保持一致。即使離析部位己經初步碾壓，仍應進行局部挖除；②若出現較大面積條帶狀粗骨料集中時，可采用人工翻拌的方法處理，但在氣溫較低的大風天氣，不宜采用；若已經初步碾壓，可人工加撒細混合料，使細料嵌入大骨料空隙中。

① When coarse aggregate concentration occurs in the partially paved asphalt mixture in blocks, refueling can be used. The thickness and compactness of the loosely paved asphalt mixture after refueling should be consistent with the original loosely paved layer. Even if the segregation part has been preliminarily rolled, it should still be partially excavated; ② If there is a large area of banded coarse aggregate concentration, the method of manual mixing can be used, but it is not suitable in windy weather with low temperature; If it has been preliminarily rolled, the fine mixture can be added manually to embed the fine material into the gap of large aggregate.
濟南瀝青混凝土

瀝青混合料溫度離析后的技術處理

Technical treatment of asphalt mixture after temperature segregation

①對于較大面積的較低溫度區域，且低溫區域低溫度低于110～120℃時，應對已攤鋪的瀝青混合料進行換料一處理；②對于小面積的路面溫度較低區域，且低溫區域低溫度高于110～120℃時，可采用增加碾壓遍數的方式對低溫區域進行特別處理。碾壓過程中必須嚴格控制往碾輪灑水量，以防止因灑水加劇瀝青混合料的溫度下降，使其壓實度符合要求。

① For a large area of low temperature area, and the low temperature in the low temperature area is lower than 110 ~ 120 ℃, the paved asphalt mixture shall be refuelled; ② For small areas with low pavement temperature, and the low temperature in the low-temperature area is higher than 110 ~ 120 ℃, the low-temperature area can be specially treated by increasing the number of rolling passes. During the rolling process, the amount of water sprayed on the roller must be strictly controlled to prevent the temperature drop of asphalt mixture from being aggravated by watering, so that its compactness meets the requirements.

此外濟南瀝青混凝土廠家再來講講成型后路面的處理方法：

In addition, Jinan asphalt concrete manufacturer will talk about the treatment method of the formed pavement:

①在局部的粗骨料集中部位進行路面滲水試驗，如果滲水系數過大，則應考慮進行處理；②對于表層或局部塊狀離析，可噴灑乳化瀝青粘層油，再適量撒布石屑，進行適當碾壓。碾壓完成后清除多余石屑，以保證表面平整度；③對于帶狀和較大區域離析部位，應對其做壓實度檢驗。嚴重不合格時，則用切割機按標出的范圍垂直切除，重新補以新拌瀝青混合料碾壓密實。

① Conduct pavement water seepage test at the part where the coarse aggregate is concentrated. If the water seepage coefficient is too large, treatment should be considered; ② For surface or local block segregation, emulsified asphalt tack coat oil can be sprayed, and then an appropriate amount of stone chips can be spread for proper rolling. Remove excess stone chips after rolling to ensure surface flatness; ③ For the strip and large area segregation parts, the compactness inspection shall be carried out. In case of serious nonconformity, the cutting machine shall be used to cut vertically according to the marked range, and the newly mixed asphalt mixture shall be added for compaction.

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