Experimental Study on the Mechanical Deformation Characteristics and Soil Water Characteristics of Waste Fiber Reinforced Loess

  • Chu Feng ,
  • Wu Yunchao ,
  • Zhang Honggang ,
  • Chen Ting
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  • 1. College of Urban Planning and Municipal Engineering, Xi'an Polytechnic University, Xi'an 710048, P.R. China;
    2. China Coal Engineering Ecological Environment Technology Co., Ltd., Beijing 100013, P.R. China

Received date: 2024-07-09

  Online published: 2025-05-06

Abstract

Waste vinylon fiber and polyester fiber were added to loess in a certain proportion to form fiber reinforced loess. The deformation and suction of vinylon fiber reinforced loess, polyester fiber reinforced loess and plain loess under vertical load are measured with unsaturated soil consolidation meter under different water content. The yield characteristics of fiber reinforced loess and soil water characteristics under vertical load were systematically analyzed. The test results show that the yield stress of fiber reinforced loess and plain loess decreases with the increase of water content. Under the same water content, the yield stress of the Loess reinforced with vinylon fiber is greater than that of the Loess reinforced with polyester fiber. The initial suction of fiber reinforced loess is larger than that of plain loess. Under the same water content, the initial suction of the Loess reinforced with vinylon fiber is larger than that of the Loess reinforced with polyester fiber. Under the action of vertical load, the suction of plain loess gradually decreases with the increase of vertical load. With the increase of the vertical load, the suction of the Loess reinforced with vinylon fiber increases first and then becomes stable. With the increase of the vertical load, the suction of polyester fiber reinforced loess shows a trend of gentle stability at first and then gradually decreasing. The suction critical load of fiber reinforced loess decreases with the increase of water content.

Cite this article

Chu Feng , Wu Yunchao , Zhang Honggang , Chen Ting . Experimental Study on the Mechanical Deformation Characteristics and Soil Water Characteristics of Waste Fiber Reinforced Loess[J]. Chinese Journal of Underground Space and Engineering, 2025 , 21(2) : 472 -480 . DOI: 10.20174/j.JUSE.2025.02.13

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