Effect of Reinforcement Layout on Soil Strength

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Courtesy of ASTM International

This paper presents the results of a laboratory investigation of the shear strength of soil reinforced with metal strips. The investigations were conducted using a large, specific purpose-built shear box. The effects of reinforcement layout, as well as type of strips and quantity of reinforcement, on soil shear strength at failure were tested. The investigations involved three reinforcement layouts (along the shear surface, across the shear surface, and spread evenly in both directions), two types of strips (smooth, ribbed), and three quantities of reinforcement (strips of different widths). The results indicate the importance of reinforcement layout in soil shear strength enhancement, with strips spaced equally in both directions found to be most effective. Other practical conclusions regarding the effects of type and width of strips on soil strength improvement were also presented.

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