行业资讯
四个方法提高沥青混合料的质量
来源：/ 日期：2022-12-28
沥青混合料质量的好坏很大程度影响着路面质量，所以如何确保沥青混合料的质量，就成为大量沥青混凝土搅拌站关注的焦点，下面济南沥青料厂家就来为您讲解。
The quality of asphalt mixture greatly affects the pavement quality, so how to ensure the quality of asphalt mixture has become the focus of many asphalt concrete mixing plants. Now, Jinan asphalt manufacturer will explain it to you.
一、提高沥青质量：沥青保养
1、 Improve asphalt quality: asphalt maintenance
其中应该根据公路等级、气候条件、路面类型、交通量大小的不同而选择。夏季高温、高速、重载、长坡路面应该选择粘度大的沥青，反之，气候寒冷、交通量小则可选用粘度小的沥青。
It shall be selected according to different highway grades, climatic conditions, pavement types and traffic volumes. Asphalt with high viscosity should be selected for pavement with high temperature, high speed, heavy load and long slope in summer. On the contrary, asphalt with low viscosity can be selected for pavement with cold climate and small traffic volume.
其中每批沥青均应按技术规范进行抽样检验，以保证质量，其中沥青的管理要注意不同来源的沥青要分别存放，不能混杂，防止污染；其贮存温度在施工期不高于170℃，不低于150℃；长期存放时应在低温下进行。
Each batch of asphalt shall be sampled and inspected according to the technical specifications to ensure the quality. For asphalt management, attention shall be paid to storing asphalt from different sources separately and not mixing them to prevent pollution; The storage temperature shall not be higher than 170 ℃ and not lower than 150 ℃ during the construction period; Long term storage shall be conducted at low temperature.
二、沥青提高质量：集料
2、 Asphalt quality improvement: aggregate
集料是沥青混凝土的骨架，是影响沥青混凝土强度的主要因素，在选料过程中，要注意减少集料级配的变异性，把控制集料级配关键的筛孔设为破碎机的受控筛孔，以此保证集料级配的稳定性。
Aggregate is the skeleton of asphalt concrete and the main factor affecting the strength of asphalt concrete. In the process of material selection, attention should be paid to reducing the variability of aggregate grading, and the key screen hole for controlling aggregate grading should be set as the controlled screen hole of the crusher, so as to ensure the stability of aggregate grading.
要注意不可使用针片状的集料。集料的含泥量也会影响集料和沥青的粘附性能和混合料的稳定性，所以在拌制混合料前，要清洁含泥的集料，堆放在料场的集料要覆盖，防止粉尘污染。
Care shall be taken not to use needle shaped aggregates. The mud content of aggregate will also affect the adhesion between aggregate and asphalt and the stability of the mixture. Therefore, before mixing the mixture, the aggregates containing mud should be cleaned, and the aggregates stacked in the stock yard should be covered to prevent dust pollution.
三、提高沥青质量：矿粉
3、 Improve asphalt quality: mineral powder
矿粉对沥青混合料的骨料胶结起着重要作用，并非单纯的填充作用，在相同的沥青用量下，矿料的表面积越大，形成的沥青膜越薄，结构沥青比重越大，沥青混合料粘聚力越强。矿粉须是石灰岩或者岩浆岩中强基性岩石磨碎后的矿粉，加工前要保证原石料的粘土被，注意保存时要注意防水、防潮。
Mineral powder plays an important role in the aggregate cementation of asphalt mixture, rather than simply filling. With the same asphalt content, the greater the surface area of mineral aggregate, the thinner the asphalt film formed, the greater the proportion of structural asphalt, and the stronger the cohesion of asphalt mixture. The mineral powder must be the mineral powder ground by the strong basic rock in limestone or magmatic rock. Before processing, ensure that the clay of the raw stone is removed, and pay attention to waterproof and moisture-proof during storage.
四、提高沥青质量：拌和温度控制
4、 Improve asphalt quality: mixing temperature control
如果混合料温度过低，就会影响摊铺和碾压质量，造成拌合不均匀和碾压困难。一般热拌沥青混合料的拌合温度在130～160℃为宜。
If the mixture temperature is too low, the paving and rolling quality will be affected, resulting in uneven mixing and rolling difficulties. Generally, the mixing temperature of hot mix asphalt mixture should be 130~160 ℃.
其中改性沥青拌合温度宜比普通沥青混合料拌合温度要提高10～20℃，改性沥青混合料在贮存过程中温降应小于10℃，集料的温度应该比沥青温度高10～30℃，储料在储料仓时间不得超过72小时。
The mixing temperature of modified asphalt should be 10~20 ℃ higher than that of ordinary asphalt mixture, the temperature drop of modified asphalt mixture during storage should be less than 10 ℃, the temperature of aggregate should be 10~30 ℃ higher than that of asphalt, and the storage time in the storage bin should not exceed 72 hours.
The above is the answer to the four methods to improve the quality of asphalt mixture. If you have any ideas or questions, please come to our website Consult!
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