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提高沥青混合料高温稳定性的三个措施
来源：/ 日期：2023-05-15
沥青路面由于使用了粘结力较强的沥青材料，使矿料之间的粘结力大大加强，从而提高了矿料的强度和稳定性，使路面使用质量大为提高,延长了路面使用寿命。下面济南沥青生产厂家来讲讲提高沥青混合料高温稳定性的三个措施。
Due to the use of asphalt materials with strong adhesion, the adhesion between mineral materials is greatly strengthened, thereby improving the strength and stability of mineral materials, greatly improving the quality of pavement use, and extending the service life of the pavement. Below, Jinan asphalt manufacturers will discuss three measures to improve the high-temperature stability of asphalt mixtures.
沥青路面的高温稳定性沥青路面的重要特点之一是其强度和抵抗变形的能力随着温度的升高而显著降低，能相差几倍甚几十倍。在夏季高温时，在阳光下沥青表面的高温度可达60摄氏度70摄氏度，这就造成沥青面层材料在高温下的抗压强度和抗弯强度不足。
One of the important characteristics of high-temperature stability of asphalt pavement is that its strength and resistance to deformation significantly decrease with the increase of temperature, with a difference of several times or even tens of times. During high temperatures in summer, the high temperature of the asphalt surface under sunlight can reach 60 to 70 degrees Celsius, which results in insufficient compressive and flexural strength of the asphalt surface material at high temperatures.
为提高沥青混合料的高温稳定性,主要采取三方面的措施:
To improve the high-temperature stability of asphalt mixtures, three main measures are taken:
一是提高材料的摩阻力，具体措施是在混合料中增加粗骨料的含量，保持良好的级配以形成稳定而密实的骨架结构;选用纹理粗糙和棱角多的骨料，也能提高内摩阻力。
One is to increase the frictional resistance of the material, which is achieved by increasing the content of coarse aggregate in the mixture and maintaining a good grading to form a stable and dense skeleton structure; Choosing aggregates with rough texture and multiple edges can also improve internal friction resistance.
二是适当提高沥青稠度。
The second is to appropriately increase the viscosity of asphalt.
三是提高沥青与矿粉的粘结力，如在沥青混合料中加入较高活性的石灰石矿料。
The third is to improve the adhesion between asphalt and mineral powder, such as adding highly active limestone mineral material to the asphalt mixture.
另外适当控制沥青用量等也能取得较好的效果。
In addition, appropriate control of asphalt dosage can also achieve good results.
如果已出现泛油、油包时处理方法为:
If oil spills or oil pockets have occurred, the treatment method is:
根据泛油严重程度撒铺不同粒径和数量的矿料，贯彻先粗后细、少撒、勤撤、撒匀的原则。
Spread mineral materials with different particle sizes and quantities based on the severity of oil spillage, and implement the principle of first coarse and then fine, less scattering, frequent removal, and even scattering.
对油包则采用加热器烫软或趁气温较高时铲除过高部分，撒少量的石屑或粗砂烫平，如油包过多则应全部铲除重铺面层。
For the oil package, use a heater to soften it or remove the excessively high part when the temperature is high. Sprinkle a small amount of stone chips or coarse sand to flatten it. If there are too many oil packages, completely remove the heavy paving layer.
That's all for the relevant content of the three measures to improve the high-temperature stability of asphalt mixtures. I hope it can be helpful to you. For more information, please come to our website Consult!
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