Product Introduction

Warp-knitted reinforced coated geotextile, also known as glass fiber polyester reinforced anti-crack cloth and warp-knitted composite polyester anti-crack cloth, is a brand-new glass fiber composite anti-crack material developed and produced by Yizheng Kangshun Geotextile Co., Ltd. It is a kind of geosynthetic material processed by special technology, which can be widely used in asphalt pavement construction and reconstruction to prevent reflection cracks, water damage and enhance pavement bearing capacity. Warp-knitted reinforced coated geotextile is a new type of geosynthetic material developed after geotextile, geogrid and strip polymer, which has good compatibility with asphalt mixture. The geotextile has no waterproof function, and the geotextile can prevent water infiltration, but the geotextile has poor strength and creep resistance and cannot exert the reinforcement and crack resistance effect. The warp-knitted reinforced coated serotonite overcomes the shortcomings of both. It can effectively deal with pavement cracks and bridge deck and pavement water damage. Warp-knitted reinforced coated geotextile is a mixture of glass fiber and polyester. Its unique combination combines the advantages of glass fiber and polyester fiber-the strength of glass fiber and the flexibility of polyester fiber. It is a structural layer formed by absorbing asphalt materials, which has the physical properties of waterproof, heat resistance and corrosion resistance, and has high tensile strength, low expansion coefficient, good toughness, no long-term creep, and is convenient for construction; it is combined with asphalt mixture The layer significantly improves its resistance to low-temperature shrinkage cracking, high-temperature rutting, fatigue cracking, and delays reflection cracking, thereby prolonging the service life of the pavement.

 

Physicochemical Properties of Warp Knitted Reinforced Coated Geotextile

Test Item		Unit	Indicators
Mass per unit area		G/square meter	≥ 380
polyester cloth		G/square meter	≥ 40
Tensile Strength	Vertical	KN/M	≥70
	Transverse		≥70
Trapezoid tear	Vertical	N	≥ 800
	Transverse		≥ 700
Elongation	Vertical	%	≤4
	Transverse		≤4
This product has been tested: the indicators are qualified, allowed to leave the factory.
Between 20-200KN/M, the vertical and horizontal strength can be combined according to customer requirements, such as 20/50,80/40KN/M, etc;

 

Characteristics of Warp Knitted Reinforced Coated Workcloth

◎ Low elongation, no long-term creep.

Warp knitted reinforced coated cloth does not creep, to ensure that the product can be used for a long time. Good compatibility and high temperature stability, good compatibility with asphalt and asphalt mixture, the melting point of the anti-cracking cloth is above 230 ℃, and its physical and chemical properties are stable at 230 ℃. Therefore, the stability is not affected by hot paving asphalt concrete at 170 ℃:

◎Good chemical stability.

After special treatment, the anti-cracking cloth can prevent all kinds of chemical erosion, resist biological erosion and climate change.

◎ Warp knitted reinforced coated tushie cloth and waterproof coating oil form a waterproof layer, even if the surface layer cracks, can effectively prevent the surface infiltration, to ensure that the base material from water damage.

◎ Warp-knitted reinforced coated geotextile can be crushed and recycled.

 

Application areas

◎ Asphalt concrete overlay

Warp knitted reinforced coated geotextile used in asphalt overlay can effectively reduce the construction time and depth of milling, asphalt overlay thickness should not be less than 4cm, it is recommended to use modified asphalt concrete.

◎ Cement concrete pavement reconstruction

Warp knitted reinforced coated geotextile can be used for cement concrete pavement reconstruction, paving before laying asphalt concrete surface can effectively prevent reflection cracks without setting up the base, especially suitable for urban roads with limited elevation. It is recommended to use modified asphalt concrete with a thickness of not less than 10cm.

◎ Semi-rigid base shrinkage crack position

Semi-rigid base shrinkage cracks are inevitable, in order to improve its performance, the use of warp knitted reinforced coating geotextile repair cracks can delay and prevent the base reflection cracks to the back layer of asphalt construction, to prevent rainwater seepage from the surface layer caused by the grass-roots slurry and accelerate road damage. It is recommended to lay the anti-cracking cloth after the construction of the seal coat and before the paving of the lower layer of asphalt.

◎ Waterproof layer of bridge deck

Warp-knitted reinforced coated geotextile used on the bridge deck can effectively prevent rainwater from seeping down from the bridge deck and causing steel bars in steel plates or concrete slabs to rust and damage the bridge deck.

◎ Old Road Expansion Project

Warp-knitted reinforced coated geotextile is used in the old road extension project for the new and old semi-rigid base and the new and old asphalt layer longitudinal patchwork.

 

Construction Organization Scheme of Warp Knitted Reinforced Coated Workcloth

1. construction progress

Cooperate with the construction unit of the road surface to make the anti-cracking cloth cover in time without affecting the construction progress.

2. construction method

(I) and remove the original road surface: clean the road surface with cleaning tools; Remove the sharp parts on the road surface; For serious cracks and broken parts of the road surface, the broken parts shall be removed, and asphalt concrete or asphalt sand shall be used to repair the original cracks and pits and cover them. The relatively strict surface recesses shall be filled with concrete. The pavement shall be dry and free of dirt, dust and gravel before laying. If there are joints on the original pavement, high-pressure air shall be used to remove sundries (sewage, dust, weeds, grease, etc.) in the joints, and the joints shall be filled with filling materials.

(II) and spraying asphalt adhesive layer: SBS modified asphalt waterproof coating adhesive layer oil can be used as the adhesive layer oil, and its specification and quality shall meet the requirements of Schedules C.3, C.4 and C.5 in the JTJ032-94 of "Technical Specification for Construction of Highway Leaky Sound Pavement. According to the condition of the road surface and the reason of the anti-cracking cloth, the amount of adhesive layer oil should be controlled between 0.9kg/m2 and 1.2kg/m2; When spraying, it is best to use manual operation of the spraying machine. The spraying width of the waterproof layer should be about 5cm ~ 10cm wider than that of the anti-cracking cloth. Spraying should be uniform, and avoid insufficient oil or striped spraying in the sticky layer. The usage of the waterproof layer shall be controlled between 0.9kg/m2 and 1.2kg/m2, and the use of the waterproof layer shall meet the requirements of D.9 in Schedule D of the JTJ032-94 Technical Specification for Construction of Highway Asphalt Pavement. The key process of construction is spraying asphalt tack coat.

(III), laying warp-knitted reinforced coated tusk: smooth without wrinkles, and timely laying (in the state of spraying waterproof layer), laying can be used in-service laying and mechanical laying, the interface should overlap each other about 3cm ~ 8cm, warp-knitted reinforced coated geotextile is laid on the waterproof layer, must wait for the waterproof layer to be completely demulsified before the next process of operation, in the waterproof layer before demulsification, do not all vehicles walk on the anti-proof cloth.

Paving of (IV) and asphalt mixture:

◎ The design of asphalt mixture shall conform to the specification requirements JTJ032-94 in Technical Code for Construction of Highway Asphalt Pavement.

◎ The minimum thickness of asphalt overlay is 4cm.

◎ The mixing, transportation, paving and compaction of asphalt mixture shall comply with the regulations and requirements of Technical Code for Construction of Highway Asphalt Pavement.

3. technical measures

(I), waterproof layer spraying must be uniform, the use of anti-crack cloth temperature should be controlled at 5 degrees Celsius.

After the warp knitted reinforced coated tusset is laid, the wrinkled part shall be treated in time to maintain the smoothness of the material. After the warp knitted reinforced coated tusk is laid, the construction vehicles or social vehicles shall not enter under the condition that the polyester glass fiber anti-cracking cloth will be taken up due to the uncooled oil in the adhesive layer of the waterproof layer. If the situation permits, the paving of the upper asphalt mixture is best carried out every other day.

(II). Strictly control the entry and exit of the transport truck. It is strictly forbidden to turn, brake and dump the corner material of the mixture on the anti-cracking cloth to prevent

(III) and anti-cracking cloth shall not be constructed in rainy days.

4. safety measures

Warp-knitted reinforced coated masonry is made of a mixture of glass fiber and other materials, which is easy to cause irritation to human skin.