Geogrid is divided into plastic geogrid, steel-plastic geogrid, glass fiber geogrid and polyester warp knitting polyester geogrid four categories.
Plastic grille
The tensile direction of the polymer net, which has a square or rectangular shape, can be stretched in one direction and two - way.It is extruded through extruded polymer sheets (mostly polypropylene or hdpe), and then directional stretching under heating conditions.The unidirectional tensile grille is only drawn along the length of the plate.The bidirectional tensile grille continues to stretch the grid of unidirectional stretching in a direction perpendicular to its length.
Due to the rearrangement of polymer polymers in the manufacture of plastic geogrid, the bonding force between the molecular chains is strengthened and the purpose of enhancing the strength is achieved.Its elongation rate is only 10% ~ 15% of the original plate.If the anti-aging materials such as carbon black are added to the geotextile grille, it can have good resistance to acid, alkali resistance, corrosion resistance and aging resistance.
Steel plastic earthwork grille
Steel-plastic geogrid with high-strength steel wire (or other fiber), through special processing, with polyethylene (PE), and add other additives, by extrusion compound high strength resistance to stay with it, and we have rough surface embossing, is for the high strength reinforced belt.From this, the single belt is prepared or sandwiched by a certain spacing, and the welding technology of special strengthening adhesion is welded to the contact point, and it is a reinforced soil grate.
Product features:
Large strength and small deformation;
Creep decreases;
Corrosion resistance and long life: the steel plastic earthwork grille is made of plastic material as protective layer, with various auxiliaries to make it anti-aging, oxidizing property, acid, alkali, salt and other bad environment corrosion.Therefore, the steel and plastic earth grate can meet the requirements of all kinds of permanent works for more than 100 years, and the performance is excellent and the dimension stability is good.
Construction convenient and quick, short cycle, low cost, steel-plastic geogrid laying, easy lap, positioning, leveling, avoids overlapping cross, which can effectively shorten project cycle, engineering cost saving of 10% 50%.
The glass fiber
Glass fiber geogrids is fiber glass material, adoption of a certain mesh structure material made of weaving process, to protect the glass fiber, improve the overall performance, after the Shanghai juji process of special geotechnical composite material.Glass fiber is the main ingredient: silicon oxide, inorganic material, its physical and chemical performance is very stable, and has great strength, high modulus, high wear resistance and excellent cold resistance, no long-term creep;Good thermal stability;The reticular structure allows the aggregate to be interlocked and limited;To improve the bearing capacity of asphalt mixture.Because the surface coating has special modified asphalt, it has two heavy compound properties, which greatly improves the abrasion resistance and shear ability of geogrid grate.
Features of glass fiber earthwork grille:
High tensile strength and low elongation - fiberglass earthwork grille is made of fiberglass and has high resistance to deformation, and the fracture elongation is less than 3%.
No long-term creep - as reinforced material, has the long-term load ability to resist deformation under the condition of the creep resistance is extremely important, creep, glass fiber does not happen this ensures that the product can keep for a long time performance.
Thermal stability, fiber glass melting temperature above 1000 ℃, that ensures that the fiberglass geogrid under thermal stability in the paving operation.
The compatibility with asphalt, fiberglass geogrid in the post-treatment process of coating material for asphalt mixture design, each fiber were coated in full, the compatibility with asphalt has the very high, thus ensuring the fiberglass geogrid are produced in the asphalt layer with asphalt mixture segregation, but strong together.
Physical and chemical stability, after special treatment for coating processing, glass fiber geogrids can resist all kinds of physical abrasion, and chemical erosion, also can resist against erosion and climate change, to ensure its performance is not affected.
Aggregate interlock and limitation - because of the network structure of glass fiber earthwork grille, the aggregate of asphalt concrete can run through it, thus forming mechanical locking.Such restrictions hamper the aggregate movement, the asphalt mixture in the load to be able to achieve better compaction state, higher bearing capacity, better load transfer performance and small deformation.
Polyester fiber warp knitting
Noil product introduction
The warp knitting polyester geogrid is a kind of reinforced embankment of new geotechnical base material with high quality, adopt high-strength polyester fiber as raw material, and after the warp knitting direction detection rubberized coating by the special craft processing and become.
Noil product features
The warp knitted polyester grille has high tensile strength, small elongation, corrosion resistance, aging resistance, strong bite force, light weight and drainage.
Noil product use
Road, railway, municipal road and other road soft soil roadbed reinforced, can effectively improve the strength of roadbed, delay the reflection crack of road;2. Reinforcement and isolation of levees and watercourses in water conservancy projects, strengthen the foundation of soft soil, enhance its protective ability and improve the bearing capacity and stability of the foundation;3. Used for embankment slope reinforcement, retaining wall and reinforcement, enhancing the overall strength.
feature
High strength, small creep, suitable for all kinds of environmental soil, can satisfy the high grade highway high wall to use.
It can effectively improve the embedded lock, occlusion action of the reinforcement load, the bearing capacity of the foundation and the lateral displacement of the soil, and strengthen the stability of the foundation.
Compared with the traditional grille, it is more powerful, bearing capacity, anti-corrosion, anti-aging, large friction coefficient, uniform eye, convenient construction and long service life.
More adapted to the deep sea homework, embankment reinforcement, fundamentally solves the other materials do stone cage by long-term water erosion caused by the low strength, poor corrosion resistance and short service life and so on.
Can effectively avoid the construction damage caused by the crushing and damage during construction
It is applicable to the road base of various roads, railways and airports.
It is applicable to the large parking lot and terminal depot.
Suitable for railway and highway slope protection.
Applicable culvert enhancement.
It is suitable for the second enhancement of the soil slope after the reinforcement of the unidirectional stretching geogrid, and the soil slope is further enhanced to prevent soil erosion.
Reinforcement of mines and tunnels.
Application
Earthwork grille is suitable for all kinds of embankments and roadbed reinforcement, slope protection and wall reinforcement.The large airport, parking lot, wharf and other permanent bearing foundation reinforcement.
Earthwork grille is used to increase the bearing capacity of road base and prolong the service life of road base.
The earthwork grille is used to prevent the surface of the road from collapsing or causing cracks to keep the ground beautiful and orderly.
Earthwork grille is used for construction convenience, save time, save effort, shorten construction period, reduce maintenance cost.
Earthwork grille is used to prevent culvert from producing cracks.
Earthwork grille is used to enhance soil slope to prevent soil erosion.
Earthwork grille is used to reduce cushion thickness and save cost.
Earthwork grille is used to support the stability of the slope planting MATS
Geogrid Steel Plastic Composite Geogrid,Steel Plastic Geogrids,Steel-Plastic Biaxial Geogrid,Plastic Pp Uniaxial Geogrid ZHEJIANG BOYA COMTECH CO.,LTD , http://www.zjbytx.com
1. Sorghum cultivation or ridge cultivation
This method has good drainage and air circulation, which can reduce the humidity between the plants and is beneficial to wound healing. When irrigating (especially in furrow irrigation), the soft rot bacteria in the water are not easily exposed to the base of the cabbage leaves to avoid infestation. It is also beneficial to promote the development of Chinese cabbage roots and improve the disease resistance of Chinese cabbage.
Second, do a good job of drainage and irrigation after the rain
Water should be drained in time after the rain, so there is no water in the ground. The irrigation should be digested and balanced, and the flood irrigation should be changed to shallow irrigation; the irrigation and string irrigation should be shortened for long ridges. Check carefully before each irrigation, and find that the soft rot strain should be dug out and buried deep. After the pull-out of the plant hole, the soil is covered with lime and then watered.
Third, reduce wound production and promote wound healing
The wounds of cabbage often have mechanical injuries, lacerations, burns, sickness, and insect wounds. These wounds are a good way to invade soft rot bacteria, so try to minimize or avoid the occurrence of wounds. Therefore, after cabbage is closed, it is necessary to minimize unnecessary field operations or field walks, avoid mechanical bruises, and prevent diseases such as pre-virus diseases, downy mildew and leukoplakia, and reduce lesions. When applying fertilizer, pay attention to a certain distance from the root system to avoid burns. Maintain a balanced water supply, avoid soil turbidity and wetness, and cause vegetable leaf physiological rupture; from the seedling stage, it is necessary to timely control pests such as tigers, cabbage caterpillars, and cabbage moths, especially to destroy the mantle. The healing and healing speed of cabbage wounds is related to temperature, humidity and air circulation (mainly oxygen supply). Create conditions of high temperature, low humidity, and air circulation to accelerate wound healing.
Fourth, the prevention of soft rot should be based on prevention
For the prevention and treatment of the disease, it is possible to use the streptomycin sulfate or agricultural streptomycin 1000-1300 times solution; or the neomycin 1300 times solution for spraying; or 50% dexamethasone water 100 times solution; or 70% dikesone wettable powder 800-1000 times liquid; or 60% bactericidal wet powder 500-600 times liquid; or 40% bacterial spirit (CT fungicide) 1 piece (0.5g) plus water 4kg; or Antibacterial agent "401" 500 times solution. Focus on the surface or petiole of the soft rot strain and its surrounding vegetable plants, so that the liquid can flow into the cabbage heart, and the effect is better.
Prevention and cure of Chinese cabbage soft rot
The pathogenic bacteria of Chinese cabbage soft rot are soft rot bacteria, which are ubiquitous in the soil and are transmitted by rainwater and irrigation water. The pathogen can only infect the disease if it is in contact with the cabbage wound. Different varieties of Chinese cabbage have different disease resistance to soft rot, and resistant varieties can be selected for prevention and treatment. In addition, we must do the following measures.
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