Abstract

The adhesion of 28 minerals with highway-grade bitumen is assessed, in terms of the surface area of the mineral (%) still coated with bitumen after boiling in water. With increase in the total content of CaO, MgO, Fe₂O₃, and Al₂O₃, the adhesion of bitumen to the minerals increases, whereas the adhesion decreases with increase in the content of SiO₂, Na₂O, K₂O, and CO₂. After boiling, the bitumen at the rock surface is not distributed randomly but is concentrated at specific mineral grains: biotite in the case of granite and gneiss; and pyroxene in the case of gabbro.

中文翻译：

---

沥青对矿物的附着力

摘要

评估了 28 种矿物与公路级沥青的粘附性，根据在水中煮沸后仍涂有沥青的矿物表面积 (%)。随着CaO、MgO、Fe ₂ O ₃和Al ₂ O ₃总含量的增加，沥青对矿物的附着力增加，而随着SiO ₂、Na ₂ O、K ₂含量的增加，附着力降低O和CO ₂。沸腾后，岩石表面的沥青不是随机分布的，而是集中在特定的矿物颗粒中：花岗岩和片麻岩中的黑云母；在辉长岩的情况下和辉石。