abstract: this paper presents the results of pullout tests on uniaxial geogrid embedded in silica sand under monotonic and cyclic pullout forces. the new testing device as a recently developed automated pullout test device for soil-geogrid strength and deformation behavior investigation is capable of applying load/displacement controlled monotonic/cyclic forces at different rates/frequencies an...

With the advent of high strength geogrids, the interest of civil engineers in using geosynthetics as reinforcement material in pavement construction has increased. An experimental study is carried out at IIT Delhi to understand the effect of geogrid in unpaved roads. Behavior of composite material, which comprises of Yamuna sand as subgrade and Water Bound Macadam (WBM) as base course is studie...

The geogrid-reinforced soil structures play important roles in the reinforcement applications since 1980s. Generally in design of the geogrid-reinforced soil structures, the soil-geogrid interaction behavior is not directly considered. Instead, the interaction strength is represented by the consolidation drained strength of soil commonly. However, neglecting the effect of compaction and suction...

This research was performed to investigate the behavior of strip footing on geosynthetic reinforced sandy soil and to study the effect of different parameters contributing to their performance using laboratory model tests. The parameters investigated in the study included top layer spacing (u), width of reinforcement (b), vertical spacing between layers (s) and number of reinforcement layers (N...

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...

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, ...

This study investigates the influence of biaxial geogrids on flexural behavior square footing foundations reinforced with glass fiber concrete (GFRC). Experimental research is conducted, involving testing five footings under area loading until failure. The variables considered are number geogrid layers and percentage longitudinal reinforcement. Various parameters including deflection, loads at ...

this paper describes a series of laboratory model tests on strip footings supported on unreinforced and geogrid-reinforced sand with an inside void. the footing is subjected to a combination of static and cyclic loading. the influence of various parameters including the embedment depth of the void, the number of reinforcement layers, and the amplitude of cyclic load were studied. the results sh...

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...