The looseness of the road surface should not be unfamiliar to everyone. This specific phenomenon is manifested as the loss or basic loss of the adhesive force between the surface layer aggregates, and the phenomenon that the aggregates fall off from the surface under the action of the road, that is, the driving of our vehicles. When you cross the road, you can see dust flying after the wheel.
There are many reasons for the looseness of the road surface. For example, asphalt in asphalt concrete has poor adhesive properties, and poor road surface materials can directly lead to loose pavement. If the bitumen in the bituminous concrete has good cohesion, but the temperature is too high during mixing, the asphalt will cause the road surface to be loose when the coke is dry. On the contrary, when the mixing temperature is low, or it is paved on the rainy day, the adhesion between the aggregates will be reduced. .
In addition, the reason why the mineral material is wet or unclean, the strength of the grass-roots layer is insufficient, or the asphalt concrete is spread when it is in a wet state will all make the road loose. There is also an objective factor. Now that the traffic volume is so large, the burden on the ground is heavy, and the vehicle's soluble oil will often encounter leakage, which will also affect the asphalt pavement.
How can we prevent the looseness of this road surface? We should take a rigorous attitude in paving the road. We must carry out detailed technical disclosure before construction to ensure that construction personnel have a thorough understanding of the construction process and have professional technical knowledge. When reviewing, the construction management personnel must be required to perform their duties and eliminate any illegal operations. In terms of materials, construction workers must confirm whether the supply manufacturers check the raw materials of the mixture in accordance with the design requirements 1 to 2 days before paving the asphalt, and reject materials of poor quality to be used in the construction of highways, and send professional supervision throughout the production process. Engineers are on site to supervise the asphalt mixture. Finally, preparations should be made well before construction. For example, understanding the weather during the construction period, ensuring the best paving temperature, and transporting the asphalt mixture to the vehicle must adopt effective insulation measures. After the construction is completed, the traffic should be closed. A special person is assigned to guard against the passage of vehicles and to ensure that the asphalt surface is less than 50 degrees Celsius and then open to traffic.
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