Mechanical characteristics of non-cohesive soil improved by fibre and cement addition
Mechanical characteristics of non-cohesive soil improved by fibre and cement addition
The work aimed to show changes in the mechanical characteristics of gravelly sand characterized by a lack of fines after adding dispersed reinforcement. Tests were conducted on natural non-cohesive soil or improved with a 1.5% cement additive. 18 mm long fibres were used, which were added in amounts of 0.1%, 0.2%, and 0.3% to the dry mass of compacted soil. The gravelly sand was compacted at the optimum water content to the maximum dry density by the Standard Proctor energy. The soil was sheared in triaxial conditions. The addition of fibres changed the sample behaviour on more plastic. The fibre content increases the maximum shear strength but it is obtained at greater relative strain. The cement lightly bound soil failure mode is diagonal through the failure plane, as in the case of semi-brittle material. Whereas the plane of destruction in the soil sample improved with cement and fibre addition is close to horizontal, which signifies that fibre- reinforced material entered its plastic zone.
Katarzyna Zabielska-Adamska; P. Dobrzycki; Mariola Wasil
18th European Conference on Soil Mechanics and Geotechnical Engineering (ECSMGE2024)
E - Environment, water and energy
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