A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Seismic performance of mechanically stabilized earth walls with Sand-Crumb rubber backfills of varying proportion
https://orcid.org/0000-0002-8852-2596
Graphical abstract Display Omitted
Highlights Seismic response of mechanically stabilized earth walls have been analysed in the study using shaking table tests. Different proportions of crumb rubber-sand mixtures were used as backfill. Acceleration response of backfill, wall deformation, earth pressure and strain in the geogrid were investigated. Failure mechanism of the model wall due to seismic shaking has also been analysed. A cost-benefit analysis has also been carried out using crumb rubber as partial substitute to backfill sand.
Abstract The applicability of crumb rubber mixed with sand as alternative fill material in mechanically stabilized earth (MSE) walls is investigated in the current study. Shaking table tests have been conducted to analyze the dynamic response of model geogrid reinforced earth walls subjected to three different base input motions. Eight different sand-crumb rubber mixture combinations were used as backfill. The outcomes of this study provide quantitative results on how base excitation amplitudes could influence the seismic behavior of the MSE walls in the presence of sand-rubber backfill. The results have been analyzed in terms of deformation and rotation of the wall, settlement of backfill, acceleration amplification, and earth pressure response. Wall displacement and backfill settlement was found to reduce with the addition of rubber in the sand. The maximum displacement at the top of the wall was found to reduce by 45% at a rubber content of 30% for high peak ground acceleration (PGA) input motion. Two-wedge failure was observed with the failure envelope inclined at an angle of 49° from the vertical. Apart from this, the strain in the geogrid was decreased with an increase in the rubber content. Hence, the rubber content of 30% mixed with sand can be considered an optimum percentage to control the dynamic performance of MSE walls. In the end, a cost-benefit analysis was conducted, and it was found that using rubber as a partial substitute for sand backfill reduces the overall cost of the project. This research will also promote the use of recyclable rubber as a construction material in highway construction.
Seismic performance of mechanically stabilized earth walls with Sand-Crumb rubber backfills of varying proportion
https://orcid.org/0000-0002-8852-2596
Graphical abstract Display Omitted
Highlights Seismic response of mechanically stabilized earth walls have been analysed in the study using shaking table tests. Different proportions of crumb rubber-sand mixtures were used as backfill. Acceleration response of backfill, wall deformation, earth pressure and strain in the geogrid were investigated. Failure mechanism of the model wall due to seismic shaking has also been analysed. A cost-benefit analysis has also been carried out using crumb rubber as partial substitute to backfill sand.
Abstract The applicability of crumb rubber mixed with sand as alternative fill material in mechanically stabilized earth (MSE) walls is investigated in the current study. Shaking table tests have been conducted to analyze the dynamic response of model geogrid reinforced earth walls subjected to three different base input motions. Eight different sand-crumb rubber mixture combinations were used as backfill. The outcomes of this study provide quantitative results on how base excitation amplitudes could influence the seismic behavior of the MSE walls in the presence of sand-rubber backfill. The results have been analyzed in terms of deformation and rotation of the wall, settlement of backfill, acceleration amplification, and earth pressure response. Wall displacement and backfill settlement was found to reduce with the addition of rubber in the sand. The maximum displacement at the top of the wall was found to reduce by 45% at a rubber content of 30% for high peak ground acceleration (PGA) input motion. Two-wedge failure was observed with the failure envelope inclined at an angle of 49° from the vertical. Apart from this, the strain in the geogrid was decreased with an increase in the rubber content. Hence, the rubber content of 30% mixed with sand can be considered an optimum percentage to control the dynamic performance of MSE walls. In the end, a cost-benefit analysis was conducted, and it was found that using rubber as a partial substitute for sand backfill reduces the overall cost of the project. This research will also promote the use of recyclable rubber as a construction material in highway construction.
Seismic performance of mechanically stabilized earth walls with Sand-Crumb rubber backfills of varying proportion
https://orcid.org/0000-0002-8852-2596
Graphical abstract Display Omitted
Highlights Seismic response of mechanically stabilized earth walls have been analysed in the study using shaking table tests. Different proportions of crumb rubber-sand mixtures were used as backfill. Acceleration response of backfill, wall deformation, earth pressure and strain in the geogrid were investigated. Failure mechanism of the model wall due to seismic shaking has also been analysed. A cost-benefit analysis has also been carried out using crumb rubber as partial substitute to backfill sand.
Abstract The applicability of crumb rubber mixed with sand as alternative fill material in mechanically stabilized earth (MSE) walls is investigated in the current study. Shaking table tests have been conducted to analyze the dynamic response of model geogrid reinforced earth walls subjected to three different base input motions. Eight different sand-crumb rubber mixture combinations were used as backfill. The outcomes of this study provide quantitative results on how base excitation amplitudes could influence the seismic behavior of the MSE walls in the presence of sand-rubber backfill. The results have been analyzed in terms of deformation and rotation of the wall, settlement of backfill, acceleration amplification, and earth pressure response. Wall displacement and backfill settlement was found to reduce with the addition of rubber in the sand. The maximum displacement at the top of the wall was found to reduce by 45% at a rubber content of 30% for high peak ground acceleration (PGA) input motion. Two-wedge failure was observed with the failure envelope inclined at an angle of 49° from the vertical. Apart from this, the strain in the geogrid was decreased with an increase in the rubber content. Hence, the rubber content of 30% mixed with sand can be considered an optimum percentage to control the dynamic performance of MSE walls. In the end, a cost-benefit analysis was conducted, and it was found that using rubber as a partial substitute for sand backfill reduces the overall cost of the project. This research will also promote the use of recyclable rubber as a construction material in highway construction.
Seismic performance of mechanically stabilized earth walls with Sand-Crumb rubber backfills of varying proportion
Bandyopadhyay, Tirtha Sathi (author) / Chakrabortty, Pradipta (author) / Hegde, Amarnath (author)
2023-05-06
Article (Journal)
Electronic Resource
English
α , Failure plane angle , C<inf>c</inf> , Coefficient of curvature , C<inf>u</inf> , Uniformity coefficient , CRF , Cost reduction factor , LVDT , Linear variable differential transducer , MSE , Mechanically stabilized earth , PGA , Peak ground acceleration , RMSA , Root mean square acceleration , SP , Poorly graded sand , TDA , Tire-derived aggregates , USCS , Unified soil classification system , Shaking table tests , Geogrid , Crumb rubber , Strain response , Earth pressure
Cement-Modified Backfills for Mechanically Stabilized Earth Walls with Built-In Facing
| British Library Online Contents | 2009
Cement-Modified Backfills for Mechanically Stabilized Earth Walls with Built-In Facing
| Online Contents | 2009
Experimental evaluation of mechanically stabilized earth walls with recycled crumb rubbers
| DOAJ | 2018