Asphalt

Asphalt is a composite material that is made by mixing sand and bitumen. Or in general, it is a mixture of stone materials with continuous granulation and an adhesive that is usually bitumen. Street and … with high thickness and quality.

Types of asphalt

Asphalt is divided into three categories according to the method of application and mixing: hot asphalt, protective asphalt and cold asphalt.

1. Hot asphalt

2. Protective asphalt

3. Cold asphalt

Hot asphalt

Hot asphalt is the type of asphalt that is mixed with bitumen hot and is spread evenly on the surface and compacted.

The most familiar type of asphalt is hot asphalt or hot asphalt concrete. Stone materials usually make up more than 90% of the asphalt mixture, so stone materials have a significant impact on the quality of the resulting asphalt.

Hot asphalt is a mixture of several different materials, including stone materials such as sand and the main material, namely bitumen, which is made in the factory based on the type of bitumen used at a temperature between 105 to 163 degrees Celsius and is sent to the desired area. This material is spread as a hot paste on the area and is beaten and pressed with special devices.
After cooling, it becomes solid and very resistant.

Protective asphalt

Protective asphalt is the combination of crushed stone with bitumen, in which the size of the stones is much smaller and the purpose of making this asphalt is to protect the area. Applications of this type of asphalt on roofs for protection and as a coating for isogum to prevent damage to it or passages in which the pressure is less. The resistance of this type of asphalt is not high and it has a lot of bitumen.
Also, the thickness of the storage asphalt is usually 2.5 cm.

Cold asphalt

Cold asphalt (Cold Mix) is a mixture of rock materials and bitumen or bitumen emulsion in which the raw materials are mixed at room temperature. In some types of cold asphalt, bitumen may be heated as needed, but other materials mix with bitumen without heating.

Cold asphalt is prepared by mixing aggregates with soluble bitumen or bitumen at room temperature and spreading and compacting at the same temperature. Aggregates can be wet when mixed with bitumen, but must be dried with soluble bitumen at room temperature or under heat. Cold asphalt mixtures prepared with concentrated soluble bitumens such as MC-3000 or SC-3000, practically like hot asphalt, must be mixed with bitumen at 95 ° C or higher and spread and compacted within the same temperature range.

Cold asphalt can be transported and then spread over long distances or stored in a workshop and used later.