行业资讯
沥青混合料发生集料离析及温度离析后的处理
来源：/ 日期：2022-07-11
如果在施工过程中不好，不仅影响沥青路面的施工质量和工程成本，而且会给后期沥青路面的使用和维护带来很高的代价，造成大量资金的浪费。因此在实际工程中应对沥青路面病害认真分析，比如沥青混合料发生集料离析及温度离析后的处理。
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.
沥青混合料碾压成型前的处理方法。
Treatment method of asphalt mixture before rolling and forming.
①松铺的沥青混合料局部呈块状出现粗骨料集中时，可采用换料处理，换料后的松铺厚度和密实度应与原松铺层保持一致。即使离析部位己经初步碾压，仍应进行局部挖除；②若出现较大面积条带状粗骨料集中时，可采用人工翻拌的方法处理，但在气温较低的大风天气，不宜采用；若已经初步碾压，可人工加撒细混合料，使细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.
沥青混合料温度离析后的技术处理
Technical treatment of asphalt mixture after temperature segregation
①对于较大面积的较低温度区域，且低温区域低温度低于110～120℃时，应对已摊铺的沥青混合料进行换料一处理；②对于小面积的路面温度较低区域，且低温区域低温度高于110～120℃时，可采用增加碾压遍数的方式对低温区域进行特别处理。碾压过程中必须严格控制往碾轮洒水量，以防止因洒水加剧沥青混合料的温度下降，使其压实度符合要求。
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.
此外济南沥青混凝土厂家再来讲讲成型后路面的处理方法：
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进行路面渗水试验，如果渗水系数过大，则应考虑进行处理；②对于表层或局部块状离析，可喷洒乳化沥青粘层油，再适量撒布石屑，进行适当碾压。碾压完成后多余石屑，以保证表面平整度；③对于带状和较大区域离析部位，应对其做压实度检验。严重不合格时，则用切割机按标出的范围垂直切除，重新补以新拌沥青混合料碾压密实。
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.
The above is all about the problems and precautions introduced to you today. I hope it can help you. If you want to know more, you can contact us by phone or follow our website , our staff will contact you in time.
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