Abstract
Determining the shear strength properties of the soil is a vital step in investigation its stress-strain behavior. Moreover, suction plays a vital role in the shear strength of the unsaturated soil. This paper investigates the influence of the fiber glass on the shear strength parameters of (c-ɸ) soil with different ratios. To achieve this purpose, the samples of (c- ɸ) soil from El-Fardos gardens housing compound, Benha city, Egypt, were prepared at their maximum dry densities with corresponding optimum moisture content. Direct shear box test of 60 x 60 mm under a relentless rate of 1 mm/min was employed with the proposed range of ASTM D 3080. Different fiber glass ratios of 0.1, 0.50 and 1.00 % of soil sample weight were used. The results confirmed that the peak shear strength parameters increased with increasing the fiber ratio.
Highlights
IntroductionThe direct shear tests are used to evaluate the shear strength parameters of geomaterials to define design parameters
In many geotechnical problems, the direct shear tests are used to evaluate the shear strength parameters of geomaterials to define design parameters
The results indicate that the shear strength increases with increasing of normal stress and fiber ratios, Fig. from 10 to 13
Summary
The direct shear tests are used to evaluate the shear strength parameters of geomaterials to define design parameters. Several labs execute direct shear test on sand, clay and (c- ɸ) soil to compute the cohesion and angle of internal friction for engineering design purpose. Olujide et al (2017) studied the direct shear experiments to research the interaction between a preponderantly cohesion less soil and unchanged concrete and the validation of the tangent of two-third of the angle of internal friction angle, unremarkably they assumed in style involving stability of structures with relation to friction. Mohapatra et al (2016) introduced a shot to investigate the dilative behavior of dense sand at 2 different sizes of the direct shear box, i.e. small (60 x 60 x 30) mm and large (305 x 305 x 140) mm.
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