Emulsified asphalt is a water in oil emulsion formed by dispersing hot melt petroleum asphalt into an aqueous solution containing emulsifiers and stabilizers through mechanical action. Let's talk about the application of emulsified asphalt in road maintenance by Jinan asphalt manufacturers.
(1) Slurry sealing layer
Slurry sealing layer is a cold mix construction technology composed of hard wear-resistant aggregate and asphalt mixed grading. Emulsified asphalt mixture has good adhesion and can be used for on-site construction on damp roads. In general, slurry seals with similar grading have high stability, high modulus, and high resistance to deformation. They are often used to fill rutting and crack defects on road surfaces, resulting in high wear resistance and good resistance to deformation, greatly increasing the strength and integrity of the road surface. The application of emulsified asphalt for slurry sealing can greatly extend the service life of highways.
(2) Stone chip cover
Stone chip overlay is a commonly used asphalt high content road surface treatment and maintenance technology method. It spreads a binder layer on the road surface layer and then evenly spreads the same particle size aggregate layer. It has the characteristics of flexibility and wear resistance. Adding polymer can effectively increase the bonding force, wear resistance, and crack resistance of the road surface. After modification, road sealing and bridge crack repair can be carried out, which can effectively reduce reflective cracks on the road surface. Due to the good chemical adhesion and moisture resistance of emulsified asphalt in road repair and maintenance, the composite sealing layer road surface treated with stone chip overlay can withstand a considerable amount of traffic load.
(3) Cape Seal
Cape sealing layer is a pavement treatment technology that utilizes emulsified asphalt to lay a flexible stone chip overlay under a wear-resistant slurry sealing layer. This type of sealing layer provides technical support for alleviating combined cracks on the road surface, and has a smooth surface characteristic. The Cape seal layer combines the high skid resistance and load-bearing performance of the stone chip overlay, as well as the flatness advantages of the slurry seal layer. It has higher wear resistance than using slurry seal layer or stone chip overlay technology alone. The application of emulsified asphalt for Cape seal layer in road maintenance can fully extend the service life of the road.
(4) Spray repair of potholes
In road maintenance, spray repair of potholes is a technical method of using emulsified asphalt to fill and repair potholes and cracks in the road surface. Use compressed air to blow dry and clean the road potholes, apply emulsified asphalt on the inner surface of the potholes, fill with aggregates, and mix thoroughly. Then, lay a dry aggregate surface seal layer on the potholes to complete the repair. The spray repair pothole technology does not require a compaction program, and the repaired pothole has high waterproof and strength performance.
(5) Microsurface processing
The advanced form of emulsified asphalt slurry cover is micro surface treatment, which is suitable for preventive maintenance of important transportation highways. It mainly consists of polymer modified emulsified asphalt, mineral filler, 100% crushed stone material, water, and necessary additives. Construction equipment is used for mixing and paving. In road maintenance, micro surface treatment is widely used to fill stable rutting defects. After paving the micro surface mixture, traffic can be opened for a short period of time. Micro surface treatment requires very high aggregate composition, and stones must be wear-resistant, sturdy, and clean. The emulsified asphalt used in the micro surface is modified by polymers, usually using SBR latex or SBS modification, and the residue has a high softening point.
(6) Prime layer and adhesive layer
In the construction of asphalt pavement, the prime coat and adhesive layer are indispensable processes. In the repair of the pavement, due to the poor uniformity and permeability of ordinary asphalt, the anti permeability and adhesion often do not meet the ideal requirements after construction, which affects the quality of the repaired pavement. Emulsified asphalt has excellent performance in this area and has good application effects in maintenance and repair engineering pavement.
During the load-bearing operation of highway bridges and pavements, varying degrees of diseases often occur, posing significant safety hazards to the stable operation of traffic. The scientific performance of emulsified asphalt and timely maintenance of highway pavement are important technical guarantees for the sustainable development of modern transportation. If you have product requirements, please come to our website http://www.ycgjglcl.com Consult!