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Glass fiber geogrid plays an important role in municipal reconstruction

Author: Hengke Shandong HuaSu Engineering Co., Ltd Time: September 26, 2020 11:11 Visits: second
Description: glass fiber geogrid is a widely used reinforcement material in municipal reconstruction, first-class highway and expressway reconstruction, which can effectively reduce pavement settlement and cracks. The main components of glass fiber are: silica, which is an inorganic material, with stable physical and chemical properties, high strength, high modulus, high wear resistance, excellent cold resistance and no long-term creep; good thermal stability; mesh structure can lock and limit polymerization; improve the bearing capacity of asphalt mixture.
 Glass fiber geogrid

Glass fiber geogrid It plays an important role in municipal reconstruction

Glass fiber geogrid is widely used in municipal reconstruction, first-class highway and expressway reconstruction, which can effectively reduce pavement settlement and cracks. The main components of glass fiber are: silica, which is an inorganic material, with stable physical and chemical properties, high strength, high modulus, high wear resistance, excellent cold resistance and no long-term creep; good thermal stability; mesh structure can lock and limit polymerization; improve the bearing capacity of asphalt mixture. Because the surface is coated with special modified asphalt, it has double composite properties, which greatly improves the wear resistance and shear resistance of geogrid.

Glass fiber grid is sometimes combined with self-adhesive pressure-sensitive adhesive and surface asphalt impregnation treatment to make the grid closely combined with asphalt pavement. Due to the increase of the interlocking force between soil and stone in geogrid, the friction coefficient between them increases significantly (up to 0.8 ~ 10). The strong friction bite force between Geogrid and soil increases the pull-out resistance of geogrid embedded in soil, which is a good reinforcement material. At the same time, geogrid is a kind of light-weight and flexible plastic flat mesh material, which is easy to cut and connect on site, and can also be lapped and lapped, so the construction is simple.
 Construction of glass fiber geogrid
Based on the study of mechanical behavior and failure mechanism of geogrid reinforced dam slope, the matching relationship between Geogrid and geogrid is analyzed
The influence of dam deformation and grid parameters on the effect of grid reinforcement are studied
(1) The results show that the development of horizontal displacement of dam slope is obviously limited after laying glass fiber geogrid symmetrically in horizontal direction; the variation law of vertical displacement of dam body before and after adding geogrid is consistent, and reinforcement is adopted
The vertical displacement of the rear was significantly reduced.
 Quotation of glass fiber geogrid
(2) The internal force distribution of each layer of geogrid is different, only the lower part of geogrid has been reinforced.
The effect of soil can shorten the length of the lower grid, but the effect of the middle grid is better, and the internal force is distributed almost along the whole length of the grid;
(3) After the geogrid is laid, the plastic shear strain on the top of the dam is significantly reduced, and the high plastic shear strain zone is transferred from the dam near the dam crest to the shallow layer of the dam slope surface.
(4) The reinforcement effect of geogrid is related to the connection mode, length, spacing and elastic modulus of geogrid. When the end of the mesh bar is hinged, the displacement is very small because the concrete block limits its displacement
Because there is no concrete block constraint, the displacement is large, so the hinge effect is good;
(5) With the increase of mesh length, the permanent displacement decreases. When the mesh length exceeds a certain length of the potential sliding surface, the effect of increasing the mesh length on the permanent displacement is not obvious.
(6) The selection of geogrid with high modulus and proper elongation has obvious effect on reducing the displacement of dam crest and improving the stability of dam body.