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提升路面耐久性：提高瀝青路面的溫度穩(wěn)定性

來源：http://www.gaohufs.com/ 日期：2023-08-11

1、使用改性瀝青，改性瀝青較普通瀝青能很大提高高溫穩(wěn)定性；

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

2、添加抗高溫外加劑，比如抗車轍劑。

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

瀝青混合料的相對密度：同溫度條件下壓實(shí)瀝青混合料試件密度與水的密度的比值，單位無量綱。

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.

瀝青混合料的理論最大密度：為計(jì)算瀝青混合料空隙率之需，假設(shè)壓實(shí)瀝青混合料試件全部為礦料（包括礦料自身的空隙）及瀝青所占有，空隙率為零的理想狀態(tài)下的最大密度，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.

擴(kuò)展資料

Extended Information

瀝青混合料的材質(zhì)與性能

Materials and properties of asphalt mixtures

用于瀝青混合料的瀝青應(yīng)具有下述性能：

Asphalt used for asphalt mixtures should have the following properties:

具有較大的稠度：表征粘結(jié)性大小，即一定溫度條件下的稠度；具有較大的塑性：以“延度”表示，即在一定溫度和外力作用下變形而不開裂的能力；

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;

具有足夠的溫度穩(wěn)定性：即要求瀝青對溫度敏感度低，夏天不軟，冬天不脆裂；具有較好的大氣穩(wěn)定性：抗熱、抗光老化能力較強(qiáng)。

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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