Sign up today! Bitumen road construction consists of several processes, including base course preparation, application of bituminous coat, placement of bituminous mix, rolling and quality checking, and so on. 1. The existing base course layer must be prepared. This may involve removal of any old surface layers of asphalt or concrete with a breaker machine, or it may be left as is for general road use. Depending on site conditions, either hot-mix or cold-mix asphalt may be used for the new base course. Bitumen road construction also involves the application of a bituminous coating to the newly laid base course. This may be done by spray-application of liquid bitumen or powder bitumen materials. The coated surface will then be placed on a roller machine where it is rolled out to the desired thickness and cured under heat or radiation before being returned to the road user. Finally, the surface of the new bitumen road needs to be refined and finished to make it safe and suitable for traffic. This may include cutting back overhanging trees, removing stones from parking lots, and other maintenance work. Overall, bitumen road construction requires extensive research into the best methods available for the specific situation. It also requires experience in selecting materials that will give the desired long-term performance of the road while remaining affordable. Finally, great attention must be paid to safety throughout all stages of the process.