Concrete cement pipe paving methods include making the entire thickness of cement concrete drainable, using two layers of cement concrete slabs to drain the upper layer, and laying a thin layer of drainable cement concrete on top of the asphalt mixture. Compared with ordinary concrete paving, the temperature difference between concrete slabs and drainage boards is relatively large. Therefore, special attention should be paid to its temperature characteristics when designing, and the temperature stress of concrete slabs must be considered when calculating. As the drainage cement concrete pavement will be shortened, load transmission equipment such as force-transmitting rods cannot be set, and it should be cut at least 20 times the width of the plate thickness. In applications where the drying shortening is small, the slitting interval can be appropriately larger. The maximum particle size of coarse aggregate used in drainage cement concrete pavement is generally 13mm. For advancing open space rate, strength and resistance, special mixtures (such as silica fume) or steel fibers for reinforcement are also added.
Concrete and reinforced concrete drainage pipes have irreplaceable advantages such as high external pressure strength, good durability, long service life, low production costs, convenient manufacturing, and cheap prices. They are built in cities and towns at home and abroad, municipal roads, farmland water conservancy, It has been widely used in the construction of electric power and railway engineering and the construction of generalized pipe corridors, and has played a huge role. The work of reinforced concrete drainage pipes in China has followed the development of the country's fundamental creation. For decades, it has continued to develop from small to large, from small to large, from backward to advanced. Now it has become the country producing the most concrete and reinforced concrete drainage pipes in various countries in the world. The drainage pipe work has also become one of the largest jobs in China's cement industry.
With the development of urbanization, the pace of infrastructure construction is accelerating, and with the increasing requirements of environmental protection, strengthening the quality control of reinforced concrete drainage pipes is of great significance to eliminate quality defects and ensure the quality of reinforced concrete drainage pipes. Then, to ensure the product quality of reinforced concrete drainage pipes, it is necessary to ensure the quality of each component and operation process in operation. The quality control that needs to be guaranteed includes: quality control of cement pipes ; quality control of surveying and laying out; quality control of trench excavation; quality control of flat base sockets; quality control of safe pipes; quality control of interfaces; inspection of wells Quality control; quality control of closed water test; quality control of backfill soil.