Work

Cemented sand under hollow cylinder multiaxial loading

Year: 2024

Type: article

Abstract: Improvement of granular soils’ mechanical properties can be achieved by the addition of bonding agents. In this research, low amount of Portland cement was added to a sand, and its beneficial shear strengthening effects were evaluated under a range of multiaxial stress paths. The influence of the orientation of the principal axes of stress and strain on the stress–strain response and failure of cemented sand has only been scarcely investigated. Therefore, this experimental investigation reports the results of a series of consolidated drained hollow cylinder torsional tests with constant principal stress path direction, ασ, varying from 0° to 90°. Results were compared with the shear behaviour of the uncemented sand tested under similar loading conditions. Results show that the addition of cement to the sand matrix increases the soil strength for all multiaxial stress path directions. The suitability of two multiaxial strength criteria for reproducing the shape of the failure envelope as a function of the orientation of principal stress axis ασ has also been analysed.

Source: Proceedings of the Institution of Civil Engineers - Ground Improvement

DOI: 10.1680/jgrim.23.00024

Authors: Marina Bellaver Corte, Lucas Festugato, Erdin Ibraim, Andrea Diambra, Nilo Cesar Consoli

Institutions: Universidade Federal do Rio Grande do Sul, Pontifícia Universidade Católica do Rio de Janeiro, University of Bristol

Language: English

Topic: Geotechnical Engineering and Soil Stabilization

Subfield: Civil and Structural Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: green