How The Filament Geotextile Reduce Costs In Highway Construction

As an asphalt pavement reinforcement material, filament geotextile can prevent cracks in the pavement due to low-temperature shrinkage, change the structural stress distribution of the pavement, prevent the expansion of reflective cracks, and reduce the rolling marks of rutting.

After surface chemical treatment, this glass fiber geotextile improves the surface properties of the glass fiber and enhances the bonding strength between the glass fiber and asphalt, so that it will not crack or warp after contacting the asphalt mixture at a high temperature of 160°C. It has excellent construction performance, can extend the service life of the highway, and can relatively reduce the thickness of the pavement structure layer, thereby achieving the purpose of reducing the cost of highway construction.

Filament Geotextile Characteristics:

1.Strength – Under the same weight specification, the filament geotextile tensile strength in all directions is higher than other needle-punched non-woven fabrics;
Anti-ultraviolet light – has extremely high anti-ultraviolet ability;
2.Extreme high temperature resistance – high temperature resistance up to 230℃, still maintains structural integrity and original physical properties at high temperature;
3.Permeability and plane drainage – the geotextile is thicker and needle-punched, with good plane drainage and vertical permeability, and can still maintain this performance after many years;
4.Creep resistance – the creep resistance of the geotextile is better than other geotextiles, so it has good long-term effectiveness. It can resist the erosion of common chemicals in the soil and the corrosion of gasoline, diesel, etc.;
5.Ductility – the geotextile has a good elongation under a certain stress, so that it can adapt to the uneven irregular base surface;

Technical Characteristics of Filament Geotextile

The geotextile is thicker, which can ensure the three-dimensional porosity of the geotextile, which is conducive to the realization of excellent hydraulic properties. The bursting strength of the geotextile has great advantages, especially suitable for retaining walls and embankment reinforcement. The indicators of geotextiles all exceed national standards and are excellent geotechnical reinforcement materials.
It is reported that as early as the early 1980s, foreign industrialized countries have widely used various specifications of glass fiber geotextiles in asphalt highway construction and asphalt pavement repair. The production technology and pavement construction operations of glass fiber geotextiles have been standardized, and have shown strong market competitiveness and good technical and economic effects.

The anti-seepage effect of anti-seepage membranes has also been demonstrated in many cases. For example, the use of anti-seepage membranes in fish ponds and artificial lake projects has played an outstanding anti-seepage effect. So can the anti-seepage membrane be connected with the concrete wall of the pool?

One connection plan we have mastered is to embed the anti-seepage membrane connection lock in the concrete in advance before building the pool.

During construction, the edge of the anti-seepage membrane can be welded to the connection lock, and the anti-seepage effect is excellent. Another is to brush asphalt glue on the surface of the concrete, mix the inhomogeneity of the anti-seepage membrane with it, and then anchor it with edge strips and steel nails to make it firmly connected.

The width of polyester filament geotextile can reach 2-6.3 meters, and the gram weight can reach 100-800g/㎡. Such high performance characteristics make polyester filament geotextile widely used: Polyester filament geotextile is used for isolation of different materials: used between the roadbed and foundation of unpaved or paved roads and airport roads, used between geomembranes and sandy drainage layers, used between foundations and embankment soils, bear additional loads, used for additional loads, used between foundation soil and foundation piles, used under sidewalks, parking lots, and sports fields, and used between new and old asphalt layers; Polyester filament geotextile is used for reinforced soft foundation: used on unpaved soft foundations, used on airport roads, railways, landfills, and sports fields, to prevent the base soil from puncturing the geomembrane, and to prevent impurities or stone layers in the landfill from puncturing the geomembrane.

Polyester filament geotextile anti-filtration: under landfills with leakage, protect geonets, prevent soil particles from intruding, protect geocomposites, and prevent Prevent soil particles from invading; polyester filament geotextile is used for drainage under geomembrane, under sports field, and under railway ballast.

Erosion control is another area where geotextile fabrics shine. These materials act as a barrier that helps prevent the loss of soil due to wind or water.

For instance, when used in conjunction with erosion control blankets, geotextiles can significantly reduce the rate of soil erosion on slopes and embankments. This not only protects the surrounding environment but also minimizes maintenance costs and the need for additional reinforcement measures.

Control Measures For the Smoothness of Modified Asphalt And SMA Pavement

Based on the main factors affecting the smoothness, take corresponding control measures from the aspects of the construction quality of the roadbed and the underlying layer of the pavement, the quality of raw materials and mixtures, the construction process and machinery configuration, and the quality of construction personnel, with the focus on the construction process and machinery configuration.

1. Strengthen the construction quality control of the roadbed and the underlying layer of the pavement
For the roadbed, the uniformity of the roadbed fill and the overall density and strength of the roadbed structure should be ensured; appropriate culvert, platform back, wall back back back and soft foundation treatment schemes should be adopted to reduce the post-construction settlement difference of the transition section; relevant measures should be taken to reduce the damage caused by water to the roadbed and ensure the stability of the roadbed.

2. Modified asphalt and SMA are relatively expensive and are generally only used in the upper layer structure. If the hand-smoothing degree and elevation error control are not taken seriously in the construction of the bearing layer, it is impossible to make up for the shortcomings of the lower bearing layer and achieve good flatness through the construction of a 4cm thick upper layer. The main lane of this project is 12.25m wide. In the construction of the lower bearing layer, ABG paver is used for full-width paving to ensure the stability of the paving mixture performance and control the uniformity of the paving speed, and different squares are used.

Environmental Benefits

Filament Geotextile can replace traditional engineering materials and construction methods, make construction safer, and help protect the environment. It can solve the basic problems in engineering construction more economically, effectively and permanently.

Conclusion

Filament geotextile has good mechanical functions, good water permeability, and can resist corrosion and aging. It has isolation, anti-filtration, drainage, protection, stability, reinforcement and other functions. It can adapt to uneven bases, resist external force damage during construction, has small creep, and can still maintain its original functions under long-term loads.

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