How to ensure that the asphalt pavement does not crack when installing the composite manhole cover:
1. When installing the cement pavement well seat, use the C25 concrete to cast 20CM thick ring beam on the brickwork of the wellhead. It is necessary to keep the well seat square, the whole flat, not loose, and the casting width of the resin manhole cover is 40CM. The maintenance period of the concrete protection ring should be more than 10 days.
2. When installing the resin manhole cover on the asphalt road, it is necessary to pay attention to avoid the construction machinery directly crushing the well seat. When the whole road surface is cast, the hole larger than the well seat should be reserved on the road surface and placed after the asphalt is laid. Ensure the quality of the resin manhole cover to extend the service life.
3. After the concrete or asphalt is cast and laid, the cover should be opened and cleaned in time to prevent the mortar or asphalt from inspecting the resin manhole cover and the seat to be integrated, so as not to affect the opening in the future.
In order to ensure the normal use of the composite inspection manhole cover, the installation quality should be paid great attention to, the size is accurate, the installation is firm, the installation is convenient, and the appearance is clean and beautiful. According to the technical standard of the composite manhole cover, the following installation rules are specially formulated for the composite manhole cover asphalt road:
1. The masonry masonry of the manhole cover shall be determined according to the size of the manhole cover designed by the design institute, or the length X width and square circle (if the construction is best according to the actual sample), or may be carried out according to the standard and cast on the periphery of the manhole cover. The concrete protection ring with a width of 40cm, the maintenance period should be more than 10 days.
Second, in order to maintain the appearance of the cover, the surface pattern and the writing are clear. When the asphalt pavement is applied, the iron or wooden board is used to cover the manhole cover. The black manhole cover can also be coated with waste engine oil to prevent the asphalt from being sprayed on the manhole cover. In the cement pavement construction, the plastic cover is used to cover the manhole cover to prevent the cement mortar from contaminating the surface of the manhole cover, and the surface pattern and handwriting are damaged. The surface of the manhole cover can also be cleaned with water when the construction is completed on the same day.
3. When installing the manhole cover on the asphalt road, it is necessary to pay attention to avoid the construction machinery directly crushing the well seat. When the whole road surface is cast, the hole larger than the well seat should be reserved on the road surface and placed after the asphalt is laid. The full pavement should be installed after the two stones are paved and finished.) Ensure the quality of the manhole cover to extend the use of life.
The composite manhole cover is widely used due to its advantages of wear resistance, corrosion resistance, rust resistance, pollution-free, maintenance-free, etc. The following is a brief introduction to the correct installation steps of the composite manhole cover.
1. Before installation, the foundation of the manhole cover should be neat and sturdy. The inner diameter and length and width should be determined according to the size of the manhole cover.
2. When installing the composite manhole cover on the cement pavement, it is necessary to pay attention to the concrete pouring on the masonry of the wellhead, and to build a concrete protection ring on the periphery for maintenance for about 10 days.
3. Install composite manhole cover on asphalt pavement. Care should be taken to avoid the direct construction of the manhole cover and well seat of the construction to avoid damage.
4. In order to maintain the beautiful appearance of the manhole cover and the clarity of the writing and pattern, it is necessary to pay attention to not to soil the manhole cover when pouring asphalt and cement on the road surface.