Study on the impact of a biopolymer-fiber combination on soil reinforcement

Abstract

Due to environmental concerns, the search for eco-friendly and efficient soil reinforcement has become urgent in recent. In this paper, the low-carbon and environment-friendly materials biopolymer and fibers were used for soil reinforcement. Direct shear tests were carried out to determine the reinforcement effect, results show that the shear strength of soil increases first and then decreases with the increase of fiber content, it reaches to the peak value at the content of 0.5%. Biopolymer increases soil shear stregnth and 0.5% content presents most effective strengthening effect. When biopolymer and fibers are mixed into soil, it show better reinforced effect than the sum of individual efforts.