A Review of Shear Resistance of Rockfill Using Large Scale Shear Tests

Year 2019, Volume: 9 Issue: 1, 1647 - 1656, 01.01.2019

Kaveh Dehghanian Sayed Mansoor Zafar Emrah Çaltılı Beste Koçak Dinç Hakan Murat Soysal

Abstract

Earth and rockfill dams, because of their special characteristics compared to concrete dams, are
Abstract: Earth and rockfill dams, because of their special characteristics compared to concrete dams, are widely used in construction throughout the world. Rockfill dams are more flexible, have capacity to absorb
widely used in construction throughout the world. Rockfill dams are more flexible, have capacity to absorb large seismic energy, and adaptability to various foundation conditions. The use of modern earth and rock
large seismic energy, and adaptability to various foundation conditions. The use of modern earth and rock equipment and locally available materials make such dams economical as well. Therefore, improving the
equipment and locally available materials make such dams economical as well. Therefore, improving the knowledge of experts about the design and maintenance of these dams are vital. Different reports of
knowledge of experts about the design and maintenance of these dams are vital. Different reports of settlement and deformation of operating rockfill dams depict the importance of technique improvements
settlement and deformation of operating rockfill dams depict the importance of technique improvements and designing new test apparatus to monitor them.
and designing new test apparatus to monitor them.
The behavior of these materials, specifically their shear strength are not fully understood. Several types of
The behavior of these materials, specifically their shear strength are not fully understood. Several types of laboratory devices have been developed to estimate the strength of these materials. Among these devices,
laboratory devices have been developed to estimate the strength of these materials. Among these devices, direct shear test has been employed most commonly owing to its simplicity and low-cost compared to
direct shear test has been employed most commonly owing to its simplicity and low-cost compared to triaxial and other methods. Traditional laboratory direct shear tests are not appropriate for investigation of
triaxial and other methods. Traditional laboratory direct shear tests are not appropriate for investigation of rockfill materials which have large-sized particles. In this case, laboratory large scale direct shear tests are
rockfill materials which have large-sized particles. In this case, laboratory large scale direct shear tests are required to be performed on these materials. In this paper, a brief review of parameters affecting shear
required to be performed on these materials. In this paper, a brief review of parameters affecting shear resistance of these particles and a history of large scale tests are presented.

Keywords

Shear strength,, direct shear test,, rockfill material,, shear resistance

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