A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Experimental Investigations on Effect of Geocell, Waste Tire Chips, and Geocell–Tire Chips on Foundation Reinforcement
Model tests were conducted for sand foundations reinforced by geocells, waste tire chips, and geocell–tire chips. Three factors related to the foundation performance are mainly examined in the current study: the embedded depth of the first layer of the geocells, the vertical spacing of geocell layers, and the content of waste tire chips. The experimental results indicate that, for a geocell-reinforced foundation, the optimal value of the vertical spacing and embedding depth is 0.2 time the footing width. The bearing capacity of the tire chips-reinforced foundation increases with the tire chips content when this content is within 8% and then decreases as the content of the tire chips increases. The optimal content of the tire chips is found to be approximately 8% by weight of the sand mixture. The performance of the geocell–tire chips composite reinforcement is superior to that of the reinforcement with only geocells. The vertical and lateral displacements of the composite-reinforced foundation are reduced remarkably and distributed more evenly. For instance, the vertical displacement under 2.5 MPa load is only 16 mm. The earth pressure of the composite foundation is significantly reduced as well. The discrepancy in the stress of the sand foundation and the reinforced foundation will be less obvious as the foundation depth increases. The diffusion effect of the reinforcement materials on the stress is mainly distributed in the vicinity of the reinforcement, with little influence on the part far away from the reinforcement materials.
Experimental Investigations on Effect of Geocell, Waste Tire Chips, and Geocell–Tire Chips on Foundation Reinforcement
Model tests were conducted for sand foundations reinforced by geocells, waste tire chips, and geocell–tire chips. Three factors related to the foundation performance are mainly examined in the current study: the embedded depth of the first layer of the geocells, the vertical spacing of geocell layers, and the content of waste tire chips. The experimental results indicate that, for a geocell-reinforced foundation, the optimal value of the vertical spacing and embedding depth is 0.2 time the footing width. The bearing capacity of the tire chips-reinforced foundation increases with the tire chips content when this content is within 8% and then decreases as the content of the tire chips increases. The optimal content of the tire chips is found to be approximately 8% by weight of the sand mixture. The performance of the geocell–tire chips composite reinforcement is superior to that of the reinforcement with only geocells. The vertical and lateral displacements of the composite-reinforced foundation are reduced remarkably and distributed more evenly. For instance, the vertical displacement under 2.5 MPa load is only 16 mm. The earth pressure of the composite foundation is significantly reduced as well. The discrepancy in the stress of the sand foundation and the reinforced foundation will be less obvious as the foundation depth increases. The diffusion effect of the reinforcement materials on the stress is mainly distributed in the vicinity of the reinforcement, with little influence on the part far away from the reinforcement materials.
Experimental Investigations on Effect of Geocell, Waste Tire Chips, and Geocell–Tire Chips on Foundation Reinforcement
2019-09-24
Article (Journal)
Electronic Resource
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