remix Type of Bitumen Road Construction:
Before distributing the mixture and compacting it, the aggregates and the bituminous binder in this method are thoroughly combined and mixed together. The following is a list of the common sorts of techniques.
A. Bituminous Bound Macadam
Bituminous Macadam (BM) is made up of one or more courses of compacted crushed aggregate that has been combined in advance with bituminous material and is then set down immediately after mixing. A compacted thickness of either 75 or 50 millimeters is used to lay the BM.
The BM is put to use in the process of building the basic course. It ought to be covered with an appropriate surfacing course before bitumen road construction is made available to traffic. It is regarded as being in a league of its own when compared to other sorts of foundation course materials like W.M.B.
B. Carpet Made of Bituminous Premixed
The components of Premixed Carpet are coarse aggregates with diameters of 12.5 mm and 10 mm that have been pre-mixed with bitumen or tar binder. In most cases, the pre-mixed carpet is set in a compacted thickness that ranges from 20 to 25 millimeters. It serves the function of the top course of the pavement.
Before the bitumen road construction area is opened to traffic, the premixed carpet will have an appropriate seal coat applied to it, such as a seal coat made of premixed sand and bitumen.
C. Bituminous concrete or asphalt concrete
Bituminous concrete, also known as asphalt concrete (AC), is a thick grade of pre-mixed bituminous mix that is highly compacted to make a high-quality pavement surface course. Bituminous concrete can also be referred to as asphalt concrete.
The aggregate course is made up of a mixture of coarse aggregate, fine aggregate, mineral filler, and bitumen in the appropriate proportions. In bitumen road construction, the thickness of the AC surface course layer falls anywhere between 40 and 75 millimeters.
D. Sheet Asphalts
Sheet asphalt, also known as rolled asphalt, is a dense mixture of sand and bitumen that is compacted to a thickness of 25 millimeters and used as a wearing course. To create a thick and impermeable layer, it is made up of well-graded sand that ranges from coarse to fine grains (but does not include coarse aggregates) and bitumen that is of an appropriate penetration grade.
The layer of asphalt sheeting is often placed down on top of cement concrete pavement to give an ideal riding surface. Additionally, it safeguards the joints in cement concrete pavement and course, resulting in a reduction in the bitumen road construction forces that cause warping.
E. Mastic Asphalt
A combination of bitumen, fine aggregate, and filler in the appropriate amounts is what makes up mastic asphalt. When the mastic asphalt is allowed to cool, it forms a layer that is rigid, robust, and long-lasting, making bitumen road construction capable of withstanding high traffic. Additionally, the material has the ability to absorb vibrations and has a feature that allows it to self-heal cracks without bleeding.