Basic Info.
Application
Retaining Wall, Steep Slop, Dam, Road Base
Function
Anti-slip, Reinforcement
Classification
Plastic Geogrid
Transport Package
Woven Bag
Origin
Laiwu District, Jinan City, Shandong Province, Chi
Product Description
Geogrid is oGeogrid is one of the main geosynthetics.Compared with other geosynthetics, it has unique performance and efficacy.It is often used as reinforcement of reinforced soil structure or composite material.
The polymer of the geogrid will be reoriented with the process of heating and extending, which strengthens the connection between the molecular chains and improves the strength of the geogrid.The elongation is only 10% ~ 15% of the original plate.If carbon black and other anti-aging materials are added to geogrids, they will have better durability such as acid, alkali resistance, corrosion resistance and aging resistance.vne of the main geosynthetics.Compared with other geosynthetics, it has unique performance and efficacy.It is often used as reinforcement of reinforced soil structure or composite material.
Biaxially stretched plastic
It is suitable for all kinds of embankment and subgrade reinforcement, slope protection, tunnel wall reinforcement, large airport, parking lot, wharf freight yard and other permanent bearing foundation reinforcement.
Characteristics of biaxial tensile plastic geogrid:
Increase the bearing capacity of Road (ground) foundation and extend the service life of long road (ground) foundation.
Prevent the road (ground) from collapsing or cracking, and keep the ground beautiful and tidy.
Construction is convenient, time-saving, labor-saving, shorten the construction period, reduce maintenance costs.
Prevent cracks in culverts.
Strengthen soil slope to prevent soil erosion.
Reduce cushion thickness and cost.
Support the stable greening environment of grass planting mat on the slope.
Instead of metal net, it can be used for false roof net in coal mine.
Main points of construction
Construction site:It is required to compact, level and remove sharp protuberances.
Grid laying:On the flat and compacted site, the main stress direction (longitudinal) of the installed and laid grid shall be perpendicular to the axis direction of the embankment, and the laying shall be flat without wrinkles, and the grid shall be tensioned as much as possible.Fixed with dowels and earth rock ballast.The main stress direction of the laid grid is preferably full length without joint.The connection between the breadth and breadth can be manually bound and lapped, and the lap width shall not be less than 10cm.If the grid is set at more than two layers, staggered joints shall be made between layers.After a large area is laid, its straightness shall be adjusted as a whole.After a layer of soil is filled and before rolling, the grid shall be tensioned again with manpower or machines and tools, with even force, so that the grid is in a straight stress state in the soil.
Selection of filler:The filler shall be selected according to the design requirements.It has been proved that all of them can be used as fillers except frozen soil, swamp soil, domestic waste, chalk soil and diatomite.However, the mechanical properties of gravel soil and sand soil are stable and little affected by water content, so they should be selected preferentially.The particle size of filler shall not be greater than 15cm, and the grading of filler shall be controlled to ensure the compaction weight.
Spreading and compaction of filler:When the grid is laid and positioned, it shall be filled and covered in time, and the exposure time shall not exceed 48 hours.The flow operation method of laying and backfilling can also be adopted.First, pave the filler at both ends, fix the grid, and then push it to the middle.The rolling sequence is from both sides to the middle.During rolling, the roller shall not directly contact with the reinforcement, and vehicles are generally not allowed to drive on the uncompacted reinforcement to avoid dislocation of the reinforcement.The compaction degree of each layer is 20-30cm.The degree of compaction must meet the design requirements, which is also the key to the success of reinforced soil engineering.
Waterproof and drainage measures:In reinforced soil engineering, drainage treatment inside and outside the wall must be done well;Foot protection and erosion prevention shall be done well;Filtering and drainage measures shall be set in the soil, and geotextile and permeable pipe (or blind ditch) shall be set if necessary.Drainage shall be conducted in the way of dredging, which shall not be blocked, or there will be hidden danger. Omni-axial reinforcement to granular sub-bases, capping layers & railway
Ballasts in areas of weak or variable soils.
When granular particles are compacted over these grids, they partially penetrate
And project through the apertures to create a strong and positive interlock.The
Load dispersal effect from the interlocking mechanism increases shearing resistance
Within the soil, improving compaction and allowing the sub base thickness to be
Decreased, ultimately reducing construction time and costs.Construction technology
First, the subgrade slope line shall be set out accurately.In order to ensure the subgrade width, each side shall be widened by 0.5m.After the foundation soil is leveled, it shall be tamped by 12t vibrating roller, 25t or above tire roller or 2.5t rammer.The uneven place shall be leveled manually (no thin layer shall be pasted and leveled).
Lay 0.3m thick medium (coarse) sand, manually cooperate with mechanical leveling, and static pressure of 25t vibrating roller twice.
When laying geogrid, the bottom surface of geogrid shall be flat and dense.Generally, it shall be laid flat and straight without curling and kinking.Two adjacent geogrids shall be overlapped for 0.2m, and the overlapped part of geogrid shall be connected with No.8 iron wire every 1m horizontally along the subgrade, and fixed on the ground with U-nails every 1.5-2m.
After the first layer of geogrid is paved, the second layer of medium (coarse) sand with a thickness of 0.2m will be filled.The method is as follows:The sand will be transported to the construction site by car and unloaded on one side of the subgrade, and then pushed forward by bulldozer.The first layer of geogrid will be turned up and then filled with medium (coarse) sand with a thickness of 0.1M.It is forbidden to fill and push both sides to the middle.It is forbidden to use various machines without them The geogrid with medium (coarse) sand filling shall be used for passing operation, so as to ensure the geogrid is flat, without bulge and wrinkle.After the second layer of medium (coarse) sand is flat, the horizontal measurement shall be carried out to prevent uneven filling thickness.After the leveling is correct, the 25t vibration roller shall be used for static pressing twice.
The construction method of the second layer of geogrid is the same as that of the first layer.At last, fill 0.3m medium (coarse) sand.The filling method is the same as that of the first layer.After static pressing twice with 25t roller, the subgrade base reinforcement will be completed.
After the third layer of medium (coarse) sand is rolled, two geogrids shall be laid on both sides of the slope longitudinally along the line, with an overlap of 0.16m, and connected in the same way.Then the earthwork construction shall be started, and the geogrid shall be laid for slope protection.The laid sideline must be measured for each layer, and each side shall ensure that the geogrid is buried 0.10m in the slope after the slope renovation.
When the slope geogrid is filled with two layers of soil, i.E.0.8m thick, a layer of geogrid shall be laid on both sides at the same time, and so on, until it is laid under the soil on the shoulder surface.
After the subgrade is filled, the slope shall be repaired in time, and the dry rubble protection shall be carried out at the toe of the slope.In addition to widening 0.3m on each side of the subgrade, 1.5% of the settlement shall be reserved.Construction precautions
The paving surface of the geogrid shall be relatively flat.After the paving layer passes the acceptance, in order to prevent the longitudinal deflection, first draw a white line or hanging line in the paving layer according to the width, and then start the paving.Then fix the end of the geogrid with iron nails (8 nails per meter wide, fixed at a uniform distance).After fixing the end of the geogrid, slowly pull the geogrid forward with the paver, and manually pave the geogrid every 10 meters long Tension and straighten once, until one roll of grid is paved, and then pave the next roll.The operation is the same as before.After one roll of grid is paved, use 6t-10t roller to roll once from the starting point to the forward direction.(for example, steel roller is suitable for paving on the middle surface layer and leveling layer, and rubber roller is suitable for paving directly on the concrete pavement.) joint paving:Take roll length as the unit In order to pave the section length, after the section length that should be paved with grid is full, check the paving quality as a whole, and then pave the next section.When the next section is paved, the overlapping length of grid and grid can be 10-15cm, fixed with nails or wooden wedges, and then pave the second section in the forward direction, and so on.The operation requirements are the same as before.
Address:
Ruixiang Road West, Renhuayuan Industrial Park, Laiwu District, Jinan City, Shandong Province
Business Type:
Trading Company
Business Range:
Construction & Decoration, Light Industry & Daily Use, Manufacturing & Processing Machinery, Metallurgy, Mineral & Energy, Security & Protection, Textile, Transportation
Management System Certification:
ISO 9001
Company Introduction:
Our company offers variety of products which can meet your multifarious demands. We adhere to the management principles of quot&quality first, customer first and credit-based" Since the establishment of the company and always do our best to satisfy potential needs of our customers.
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