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.
Double Layer Roll Forming Machine
This kind of machine make two types of tile together perfectly, it has reasonable structure, beautiful appearance, with advantage of saving space, easy operate and especially welcomed by the customer with limit area or site
Descriptions of Roll Forming Machine for Roof Panel, Wall Panel:
1.This kind of Cold Roll Forming Machine is widely used for making various metal wall panels and roof panels for steel constructions, steel structure projects and containment systems etc.
2. This production line consists of feeding unit, uncoiler, feeding guide, roll forming machine, cutter, automatic stacker, hydraulic system and electric control system.
3. The line speed of this panel forming machine is 40m/min.
Components of Roll Forming Machine for Roof Panel, Wall Panel:
1) Un-coiler:
Electric un-coiler, with coil-car
Load capacity = Max.10Tons;
2) Roll forming machine:
About 18steps to form;
Material of Roller: 45# steel with chromizing on surface
Voltage:380V/50Hz; Main line speed: 40m/min;
3) Hydraulic cutter:
1) Stop to cut, Post cut,
2) Cutting tool material: Cr12, Heat treatment
4) PLC control system:
Using Mitsubishi PLC Control the quantity, length automatically, LCD screen; remote control available.
Related Products:Roof Sheet Forming Machine,Iron Sheet Making Machine,double layer roof sheet roll forming machine.
Double Layer Roll Forming Machine
Double Layer Roll Forming Machine, Roof Sheet Forming Machine, Double Layer Sheet Roll Forming Machine, Iron Sheet Making Machine
Botou Xianfa Roll Forming Machine Factory , https://www.rollforming.nl