Asphalt coating: 3 layers of asphalt and reservoir or oxidized asphalt asphalt laid according to the sample and method, the thickness does not span 3cm. The thickness of asphalt is generally 1.5-3 cm. The layered coating can be divided into single-layer, double-layer and three-layer. The thickness of the single-layer surface is generally 1.5-2.5cm, and the thickness of the three-layer surface is 2.5-3cm. Asphalt sheets are suitable for use on Class 3 and 4 journey pavements, as well as old asphalt pavements with coatings or anti-skid layers, abrasive layers, etc. D.

Asphalt coating: It is coated with asphalt impregnated asphalt (crushed stone) coating. The thickness of the asphalt coating is generally 4-5 cm. When the asphalt is absorbed to the top by stirring the asphalt mixing method, it is also called top-down stirring, Then the thickness of the stirring layer should be 3-4cm, and the total thickness is 7-10cm. Asphalt concrete pavement is applied to the asphalt pavement of secondary and secondary highways.

Asphalt gravel: Asphalt gravel refers to covering with an asphalt cover. The ratio of the amount of asphalt crushed stone to the structure shall be confirmed according to practical experience and the role of Marshall's experiment, and shall be subjected to pre-construction trial mixing and trial laying. Asphalt gravel is sometimes used as a bond coat.

Asphalt concrete pavement: It is a kind of asphalt concrete pavement. Its surface layer can be mixed with single-layer, double-layer or three-layer concrete. Shipping composition to confess to meet the operational requirements of the asphalt surface. Asphalt concrete generally passes through the pavement of high-grade highways.

Emulsified Asphalt Crushed Stone: It is suitable for the asphalt layer of Grade 3 and Grade 4 highways and the asphalt covering layer of Grade 2 road surface, as well as the leveling layer of highways at all levels. Abroad, it is also used as a living base.

Asphalt stone pavement: Asphalt stone pavement refers to pavement or anti-skid pavement. Crushed asphalt binder (SMS) is an asphalt binder composed of modified asphalt, mineral powder and lignocellulose, which is formed by stirring, oxidized asphalt stacking, compacting and forming a deep structural anti-skid layer. It has the characteristics of anti-slip, low porosity, high temperature resistance and fatigue resistance, high temperature resistance and crack resistance strength, etc. It is a new structure that comprehensively improves the application quality of sealed concrete. .

Asphalt wear layer upgrading (DGFC): The asphalt wear layer is made of high-porosity asphalt mixture, which improves the hollow structure of the skeleton asphalt wear layer. Its granulation has intermittent upgrading effect, and its porosity is relatively large, generally around 20%. The road coat can quickly pump rainwater from the inner row, and has the characteristics of anti-skid, anti-rutting and descending noise. Asphalt abrasive layer upgrades are generally used for surface layers in high-end travel.

Cement concrete pavement: The advantage is that it has plates, high strength, stability, and is hardly affected by the strength of the bottom layer, because the pavement is gray, which is convenient for night travel, and can also be used to travel with crawler. The daily repair and maintenance work is small, and the service life is 20-30 years. The disadvantage is that the cement has hydraulic stiffness, and the strength of the concrete requires a certain time. Generally, it will be opened to traffic after 28 days, because the road has joints, the traffic has trembling, and There is a lot of noise. When the road is damaged, it is not easy to excavate for repairs, and a large investment is required at one time.

Cement concrete coating requires equipment joints. The working principle of joints is to prevent excessive increase of stress caused by temperature changes, to prevent the formation of large bending stress of the wing caused by temperature difference, and to prevent uneven settlement on the ground from causing cracking of the board.

Weld seams are divided into longitudinal seams and transverse seams according to the plane orientation. Weld seams can be divided into expansion seams, shortening seams and construction seams.If you have any other questions, please contact us for oxidized asphalt details or contact us directly.

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