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提升路面耐久性：提高沥青路面的温度稳定性

来源：/ 日期：2023-08-11

1、使用改性沥青，改性沥青较普通沥青能很大提高高温稳定性；

1. Using modified asphalt can greatly improve high-temperature stability compared to ordinary asphalt;

2、添加抗高温外加剂，比如抗车辙剂。

2. Add high-temperature resistant additives, such as anti rutting agents.

沥青混合料的相对密度：同温度条件下压实沥青混合料试件密度与水的密度的比值，单位无量纲。

Relative density of asphalt mixture: The ratio of the density of compacted asphalt mixture specimens to the density of water under the same temperature conditions, in dimensionless units.

沥青混合料的理论密度：为计算沥青混合料空隙率之需，假设压实沥青混合料试件全部为矿料（包括矿料自身的空隙）及沥青所占有，空隙率为零的理想状态下的密度，以t/?表示。

Theoretical maximum density of asphalt mixture: For the purpose of calculating the void fraction of asphalt mixture, it is assumed that all compacted asphalt mixture specimens are composed of mineral aggregate (including the voids of the mineral aggregate itself) and asphalt, and the ideal maximum density with zero void fraction is in t/? Represent.

扩展资料

Extended Information

沥青混合料的材质与性能

Materials and properties of asphalt mixtures

用于沥青混合料的沥青应具有下述性能：

Asphalt used for asphalt mixtures should have the following properties:

具有较大的稠度：表征粘结性大小，即一定温度条件下的稠度；具有较大的塑性：以“延度”表示，即在一定温度和外力作用下变形而不开裂的能力；

Having a large consistency: characterizing the size of the adhesive strength, that is, the consistency under certain temperature conditions; Has greater plasticity: expressed as "ductility", which means the ability to deform without cracking under a certain temperature and external force;

具有足够的温度稳定性：即要求沥青对温度敏感度低，夏天不软，冬天不脆裂；具有较好的大气稳定性：抗热、抗光老化能力较强。

Having sufficient temperature stability: that is, asphalt is required to have low temperature sensitivity, not soft in summer, and not brittle in winter; It has good atmospheric stability: strong resistance to heat and light aging.

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