Open Access
ARTICLE
Effect of Polypropylene Fiber on the Unconfined Compressive Strength of Loess with Different Water Content
Wankui Ni1, Jiaxin Zhong1,2, Haiman Wang1,*
1
College of Geological Engineering and Geomatics, Chang’an University, Xi’an, 710054, China
2
Ningxia Institute of Survey and Monitoring of Land and Resources, Yinchuan, 750002, China
* Corresponding Author: Haiman Wang. Email:
Journal of Renewable Materials 2023, 11(4), 1699-1814. https://doi.org/10.32604/jrm.2022.023805
Received 16 May 2022; Accepted 18 July 2022; Issue published 01 December 2022
Abstract
Fiber-reinforced soils have been of great interest to experimenters for building foundations’strength performance,
time, and economy. This paper investigates the effects of water content and polypropylene fiber dosage and length
on loess’s unconfined compressive strength (UCS) according to the central composite response surface design test
procedure. The water content is 11%–25%, the mass ratio of fiber to soil is 0.1%–0.9%, and the fiber length ranges
from 6–18 mm. The response surface method (RSM) developed full quadratic models of different variables with
response values. After analysis of variance (ANOVA), the mathematical model developed in this study was statistically significant (p ≤ 0.05) and applicable to the optimization process. The optimization results showed that
the optimal water content values, fiber amount, and fiber length were 16.41%, 0.579%, and 14.90 mm, respectively. The unconfined compressive strength of the optimized specimens was increased by 288.017 kPa. The
research results can reference the design and construction of fiber-reinforced soil in practical projects such as road
base engineering and foundation engineering.
Graphical Abstract
Keywords
Cite This Article
Ni, W., Zhong, J., Wang, H. (2023). Effect of Polypropylene Fiber on the Unconfined Compressive Strength of Loess with Different Water Content.
Journal of Renewable Materials, 11(4), 1699–1814.