Benefits of using geotextiles for construction

(I) Convenient construction
Geotextile material is light and soft, which makes it very convenient in the transportation process, greatly reducing the transportation cost and labor input. In the laying process, due to its lightweight characteristics, the construction personnel can be easily operated without the aid of large-scale mechanical equipment. Moreover, the geotextile can be cut according to the actual project needs, and can perfectly adapt to the shape and size requirements of various complex construction sites. This flexibility not only improves the construction efficiency, but also effectively reduces the waste of materials and further shortens the construction period. For example, in some emergency road repair works, geotextile can be quickly laid, for the road as soon as possible to resume traffic to fight for valuable time.
(B) low cost
Compared with the traditional waterproof board, waterproof roll, masonry and concrete materials, geotextile is inexpensive. This is mainly because the raw material of geotextile is nonwoven fabric, and the production cost of nonwoven fabric is relatively low. In some projects, the need to use a large number of geotechnical materials, the use of geotextiles can significantly save costs. To a medium-sized water conservancy project, for example, if the use of traditional waterproofing materials, the cost may be as high as millions of dollars, while the use of geotextiles can reduce the cost by about 30%. Therefore, the cost advantages of geotextile make it in many projects are favored.
(iii) Various specifications
Geotextile specifications are complete, the general width of 1 - 6 meters, the quality of the unit area of 100 - 900 grams / square meter. Different specifications can meet the needs of different projects. For example, in some small landscaping projects, you can choose a narrower width and lighter unit area quality of geotextile; and in the large dam protection project, you can choose a larger width, unit area quality of heavier geotextile, to ensure the stability and safety of the project. In addition, geotextile specifications for engineering design also provides more space for choice, the designer can be based on specific engineering requirements for reasonable matching, to achieve the best engineering results.
(D) Widely used
Geotextile is widely used in railroads, highways, dams, hydraulic construction and other fields. In the railroad project, it can be used for roadbed reinforcement, enhance the stability of the roadbed, reduce the settlement of the roadbed; in the highway project, it can be used for pavement maintenance, to prevent the pavement reflection cracks, prolong the service life of the pavement; in the dam project, play the role of seepage control, drainage, reinforcement and so on, to ensure the safety of the dam; in the hydraulic construction, used for isolation, anti-filtration and so on, to ensure that the normal operation of the waterworks construction. According to statistics, the application rate of geotextile in the field of infrastructure construction has exceeded 70%, and with the continuous progress of technology, its application scope is still expanding.

Third, the role of geotextiles in the field

(i) Road engineering
Geotextile plays an important role in road engineering. It can play a key role in the road maintenance process. First of all, geotextile can effectively prevent the rapid volatilization of water, maintain the humidity of the road grassroots level, thus reducing the road surface cracking and other problems caused by rapid water loss. Secondly, geotextile has a good sunscreen effect, can reduce the sun's ultraviolet radiation on the road base layer of damage, prolong the service life of the road. In addition, the geotextile can also play a role in isolation, separating different pavement structural layers, preventing the intermixing of different materials, and ensuring the stability of the performance of each structural layer. For example, in some road maintenance projects, geotextile is widely used in the combination of old and new pavement, effectively preventing cracks. According to statistics, after using geotextile for road maintenance, the service life of the road can be extended by 20% to 30%.
(B) water conservancy project
In water conservancy engineering, geotextile is mainly used for the isolation and seepage control of embankment and channel. It can separate the different structural layers of the dam, prevent the loss of soil particles and mixing, to ensure the stability of the dam. At the same time, geotextile has good seepage control performance, which can effectively prevent water seepage and avoid the waste of water resources and environmental pollution caused by seepage. For example, in the construction of reservoirs, geotextiles are laid at the bottom of dams and reservoirs, playing a good role in seepage control. According to relevant data, after using geotextiles for seepage control, the leakage of reservoirs can be reduced by more than 80%. In addition, in river management, geotextile can also be used for the anti-washout of the berm to protect the ecological environment on both sides of the river.
(III) Construction
In the field of construction engineering, geotextile as a building concrete separator, can separate different structures, enhance the stability of the building. For example, in the basement waterproofing project, the geotextile can be laid between the concrete base layer and the waterproof layer, playing the role of isolation and protection of the waterproof layer. At the same time, the geotextile can also prevent the fine particles in the concrete from penetrating into the waterproof layer, affecting the performance of the waterproof layer. Geotextile is also widely used in the foundation treatment of high-rise buildings. It can separate different soil layers in the foundation, prevent mutual sliding and settlement between soil layers, and improve the bearing capacity of the foundation. According to the statistics of actual engineering cases, after using geotextile for foundation treatment of construction projects, the settlement of buildings can be reduced by more than 50%.
(D) Other fields
In addition to road engineering, water conservancy engineering and construction engineering, geotextile has a wide range of applications in other fields. In the mine beneficiation, geotextile can be used as a drainage material to discharge the water in the mine and improve the efficiency of beneficiation. In the construction of sports ground foundation, geotextile can play the role of reinforcement and anti-scouring to ensure the flatness and stability of the sports ground. For example, in the construction of soccer field, geotextile is laid between the turf and the grass-roots level, which plays the role of drainage and protection of turf. In addition, in environmental protection projects, geotextile can also be used for landfill cover and isolation, to prevent the pollution of waste leachate on the environment. According to incomplete statistics, at present, the application of geotextile in various fields is more and more extensive, and its market demand is also growing.

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