How to Backfill and Compact HDPE Double Wall Corrugated Pipe

In the construction of municipal drainage, communication pipe network and other projects, HDPE double-wall corrugated pipe has become a common choice for pipeline laying due to its excellent performance. However, after the completion of pipeline laying, backfill compaction is also critical, which directly affects the service life and engineering quality of the pipeline. Following the scientific and standardized backfill compaction method can ensure the stable operation of HDPE double-wall corrugated pipe, and referring to the national standard requirements of HDPE double-wall corrugated pipe is the basis for ensuring the construction quality.

the backfill of HDPE double-wall corrugated pipe, the first principle is to carry out from both sides of the pipe at the same time. This can avoid the unilateral force of the pipe and prevent the pipeline from being displaced, deformed or even damaged due to uneven force. If only backfill from one side, the strong lateral pressure may squeeze the pipeline, causing it to deviate from the original design position and affecting the normal operation of the entire pipe network system. Therefore, when backfilling, construction personnel need to coordinate the progress of the filling on both sides, maintain synchronous backfilling, and provide balanced support for the pipeline.

layered backfilling is an important way to backfill HDPE double-wall corrugated pipes, and the thickness of each layer should not exceed 300mm. Layered backfilling can make the backfill more evenly compacted and improve the compaction effect. If one backfill is too thick, the backfill at the bottom is difficult to be effectively compacted, which is prone to problems such as voids and looseness, reducing the stability of the pipeline. In actual operation, construction personnel will use tools such as levels and rulers to strictly control the thickness of each layer of backfill to ensure that it meets the specifications. Every time a layer of backfill is completed, the compaction operation will be carried out in time.

the compaction process needs to choose suitable small compaction equipment, such as small vibratory rollers, frog rammers, etc., to avoid the use of large and heavy compaction machinery to directly roll the pipeline. The huge pressure generated by large machinery may crush the HDPE double-wall corrugated pipe with thin pipe walls, causing damage such as pipeline rupture and depression. Small compaction equipment is relatively flexible, which can not only achieve good compaction effect, but also reduce the damage to the pipeline. In the compaction process, the principle of "light first and then heavy, slow first and then fast" should be followed, and the compaction strength and speed should be gradually increased to ensure uniform compaction of backfill soil. At the same time, it is necessary to pay attention to the walking route of the compaction equipment, avoid repeated rolling in the same position, and prevent the local pressure from being too large to damage the pipeline. The soil quality selection of

backfill soil cannot be ignored. Priority should be given to plain soil and sand with uniform soil quality, moderate particles and no impurities, and avoid using soil containing stones, bricks, frozen soil, humus and other debris. These debris will not only reduce the compaction degree of the backfill soil, but also scratch the pipe wall during the operation of the pipeline, shortening the service life of the pipeline. In addition, the water content of the backfill soil also needs to be controlled within a suitable range. Too dry or too wet will affect the compaction effect. Before construction, the best water content and maximum dry density of the backfill can be determined by compaction test to ensure that the compaction degree of the backfill meets the requirements of the national standard of HDPE double-wall corrugated pipe. Generally, the compaction degree of the chest cavity of the pipe should reach more than 95%. The compaction degree within the range of 500mm above the top of the pipe is not less than 85%.

For the project builders in Yidu City, Dangyang City, Zhijiang City and Yuan'an County, Xingshan County, Zigui County and other places, the choice of high-quality HDPE double-wall corrugated pipe and professional manufacturers is the guarantee for the smooth development of the project. As a high-quality manufacturer in the industry, Hubei AD Building Materials Co., Ltd. produces products in strict accordance with the national standard of HDPE double-wall corrugated pipes. From raw material screening to finished products leaving the factory, every link is strictly controlled to ensure reliable product quality. The HDPE double-wall corrugated pipes provided by the company are not only of excellent quality, but also highly competitive in price, which can meet the budgetary needs of different projects. In addition, the company can also provide customers with professional construction guidance, including technical support for key links such as backfill compaction. If you have product procurement or technical consultation needs, please call 17399989993, Hubei AD Building Materials Co., Ltd. will serve you wholeheartedly.

master the correct method of backfill compaction of HDPE double-wall corrugated pipes is an important link to ensure the quality of pipeline projects. From simultaneous backfilling on both sides, layered thickness control, to reasonable selection of compaction equipment and backfill soil, every step needs to strictly follow the specifications. Hubei Au Yuan Building Materials Co., Ltd. relies on high-quality products and services to help Yidu City, Dangyang City, Zhijiang City and Yuan'an County, Xingshan County, Zigui County and other places in the construction of various projects, contributing to the stable operation of urban infrastructure.