In this paper, an experimental and numerical study was adopted to investigate the effect geogrid soil reinforcement prestressing on the pressure settlement relation of sand bed supporting a strip foundation. The studied parameters include foundation depth and pre-stress ratio for the cases of one and two pre-stressed reinforcement layers. The study reflected that pre-stressing of soil reinforce...

This study introduced at first the background of numerous highway widening projects that have been developed in recent years in China. Using a large ground settlement simulator and a fiber Bragg grating (FBG) strain sensor network system, a large-scale model test, with a similarity ratio of 1:2, was performed to analyze the influence of differential settlement between new and old subgrades on p...

Roads are subjected to vehicle traffics with different loads and velocities. Geogrid reinforcement is of the best methods for road improvement due to the ease of construction, delay in damage development and financial efficiency. This study evaluates pavement response under different loads and velocities, before and after geogrid reinforcement. A finite element software (ABAQUS) is used for num...

large size direct shear tests (i.e.300 x 300mm) were conducted to investigate the interaction between clay reinforced with geogrids embedded in thin layers of sand. test results for the clay, sand, clay-sand, clay-geogrid, sandgeogrid and clay-sand-geogrid are discussed. thin layers of sand including 4, 6, 8, 10, 12 and 14mm were used to increase the interaction between the clay and the geogrid...

The stability of geogrid-reinforced soil structure is closely related to the interface characteristics between geogrid and soil. However, creep behavior soil–geogrid still unrevealed. In this study, using a modified stress-controlled pullout device, influence normal pressure, dry density, water content on compacted loess high-density polyethylene (HDPE) investigated. A three-parameter empirical...

an experimental program was conducted to determine the effects of geosynthetic reinforcement on mitigating reflection cracking in asphalt overlays. the objectives of this study were to asses the effects of geosynthetics inclusion and its placement location on the accumulation of permanent deformation. to simulate an asphalt pavement overlaid on top of a crack in a concrete or asphalt pavement, ...

in this research, failure mechanism, soil deformation and effect of reinforcement below a strip foundation were studied using physical modeling and piv method. for this purpose, a comprehensive set of tests were undertaken on dense and loose sands and different geosynthetic materials such as geotextile and geogrid for soil reinforcing. in each step of loading, digital image of deformed soil was...

In order to investigate the pullout resistance of Horizontal-Vertical reinforcement, a “denti-geogrid” was assembled by bonding “denti-strip” with geogrid and tests were carried out. Subsequently, analytical approaches investigated calculate on basis surface sliding model, Perterson Anderson’s Jewell’s Chai’s proposed stress summation model. Moreover, new index named “scale factor” suggested re...

A three-dimensional numerical analysis of inclined anchors embedded in unreinforced and geogrid-reinforced sand is presented this paper. The pullout forces breakout factors are compared for the reinforced cases. capacity increased when placed below a layer geogrid reinforcement. influence several other parameters, such as stiffness, inclination angle, soil friction embedment ratio, investigated...