A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Strength Enhancement of Geogrid Reinforced Marginal Backfill Materials in Triaxial Condition
To overcome the dearth of natural sand, usage of the marginal fills has become inevitable in mechanically stabilized earth walls. The paper investigates the suitability of two waste materials, namely, steel slag and construction and demolition waste (CDW) for backfill applications. A series of strain-controlled static triaxial tests were conducted on geogrid reinforced sand, slag, and CDW at 70% relative density. Test results reveal that the performance of both the fill materials was found to be superior than the conventional fill material sand. Slag found to have the maximum shear strength, whereas CDW sustained higher strain at failure. Geogrid reinforcement increased the apparent cohesion of the materials without significantly affecting the friction angle. The geogrid found to enhance the peak shear strength of the slag by 2.5 times. The experimentally obtained stress–strain response was further approximated using the Duncan-Chang hyperbolic model, which effectively captured the non-linear shear behavior of geogrid reinforced materials.
Strength Enhancement of Geogrid Reinforced Marginal Backfill Materials in Triaxial Condition
To overcome the dearth of natural sand, usage of the marginal fills has become inevitable in mechanically stabilized earth walls. The paper investigates the suitability of two waste materials, namely, steel slag and construction and demolition waste (CDW) for backfill applications. A series of strain-controlled static triaxial tests were conducted on geogrid reinforced sand, slag, and CDW at 70% relative density. Test results reveal that the performance of both the fill materials was found to be superior than the conventional fill material sand. Slag found to have the maximum shear strength, whereas CDW sustained higher strain at failure. Geogrid reinforcement increased the apparent cohesion of the materials without significantly affecting the friction angle. The geogrid found to enhance the peak shear strength of the slag by 2.5 times. The experimentally obtained stress–strain response was further approximated using the Duncan-Chang hyperbolic model, which effectively captured the non-linear shear behavior of geogrid reinforced materials.
Strength Enhancement of Geogrid Reinforced Marginal Backfill Materials in Triaxial Condition
Sarkar, S. (author) / Hegde, A. (author)
Geo-Congress 2022 ; 2022 ; Charlotte, North Carolina
Geo-Congress 2022 ; 467-476
2022-03-17
Conference paper
Electronic Resource
English
Strength Enhancement of Geogrid Reinforced Marginal Backfill Materials in Triaxial Condition
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