Effect of natural and synthetic fibers reinforcement on California bearing ratio and tensile strength of clay

Nezhad, Mahdi Ghasemi; Tabarsa, Alireza; Latifi, Nima

doi:10.1016/j.jrmge.2021.01.004

Cited by 25 publications

(4 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Fibre soil stabilisation, also called fibre-reinforced soil (FRS), is a method of improving soil properties by incorporating synthetic or natural fibres into the soil matrix. The addition of fibres improves the mechanical properties of the soil, and makes it more resistant to deformation, cracking, and erosion (Demsie et al, 2023;Medina-Martinez et al, 2022, 2023Nezhad et al, 2021;Vincenzini et al, 2021).…”

Section: Fibre Soil Stabilisationmentioning

confidence: 99%

Review of Subgrade Soil Stabilised with Natural and Synthetic Fibres

Nathen,

Arshad,

Rais

et al. 2024

IOP Conf. Ser.: Earth Environ. Sci.

View full text Add to dashboard Cite

Subgrade soil is an essential component in the design of road structures as it provides lateral support to the roadway. One of the main reasons for pavement failure is subgrade settlement, which leads to a loss of subgrade strength. If the mechanical properties of subsoils are lower than required, a soil stabilisation method may be an option to improve the soil properties of the weak subsoil. Soil stabilisation is one of the techniques for improving poor subsoil, which results in significant improvement in tensile strength, shear strength and bearing capacity of subsoil. Soil stabilisation can be broadly divided into four types: thermal, electrical, mechanical, and chemical. The most common method of improving the physical and mechanical properties of soils is stabilisation with binders such as cement and lime. However, soil stabilisation with conventional methods using cement and lime has become uneconomical in recent years, so an alternative such as fibres may be sought. This review provides a comprehensive comparison of the effectiveness of natural fibres and synthetic fibres in stabilising subgrade soils.

show abstract

Section: Fibre Soil Stabilisationmentioning

confidence: 99%

Review of Subgrade Soil Stabilised with Natural and Synthetic Fibres

Nathen,

Arshad,

Rais

et al. 2024

IOP Conf. Ser.: Earth Environ. Sci.

View full text Add to dashboard Cite

show abstract

“…The increase in strength is directly proportional to the number of fibers used. Additionally, the presence of fiber creates a bridging effect on the shear plane, preventing the sample from cracking and improving its strength [43]. However, an excessive number of these results in reduced strength owing to increased friction of the fibers and reduced soil-fiber interactions [11,20].…”

Section: Unconfined Compressive Strength Of Stabilized Claymentioning

confidence: 99%

Tensile Strength and Durability of Oil Palm Empty Fruit Bunch Fiber in Soft Soil

Arifin¹

2022

GEOMATE

View full text Add to dashboard Cite

Natural fibers are already being used to stabilize the soil. However, the exact mechanism by which natural fibers improve the shear strength of soil is still not clear, and it varies according to the morphology of each fiber. Its durability in the soil is also an important issue in the use of natural fibers for soil stabilization. This study focused on the strength and durability of oil palm empty fruit bunch (OPEFB) fiber as a stabilizing material for soft clay. The durability was determined according to the changes in tensile strength and friction of the soil after a certain period. The clay was obtained from Banyu Hirang in South Kalimantan. The OPEFB fiber was obtained without further treatment from a palm oil processing plant. Tensile, soil-fiber friction, and unconfined compression tests were conducted for mixtures of fiber and soil. Preparations were made for each test with the same duration and conditions (1, 7, 14, 28, and 90 days) in closed and open conditions. The results showed that the average tensile strength of the fiber before use was 101 MPa. This value decreased sharply after 14 days in the soil, leaving a strength of 35.71 MPa in the open condition and 23.89% in the closed condition on the 90th day. The soil-fiber friction increased with increasing time, reaching 0.15 MPa in both conditions from the initial value of 0.06 MPa. The compressive strength of the soil-fiber mixture also increased with time. The corresponding scanning electron microscope results strengthened the findings of this study.

show abstract

“…Polyester fbers of length 70 mm were mixed in soil according to [28] and used as random reinforcement in amounts of 0.5%, 1.0%, and 1.5%. On the other hand [31], the infuence of natural fbers as well as synthetic polyester (PET) fbers on the strength behavior of clayey soil was experimentally investigated with various fber contents (0.5%, 1%, and 2%) and lengths of 2.5 mm, 5 mm, and 7.5 mm.…”

Section: Introductionmentioning

confidence: 99%

“…Generally, some researchers used a higher fber length (such as 70 mm) [28], and some others used a lower length (2.5 mm-7.5 mm and 15 mm) [17,31]. To fll those gaps, this investigation was uniquely designed to stabilize the weak subgrade soil with NSF in diferent aspect ratios and dosages.…”

Section: Introductionmentioning

confidence: 99%

NSF (Nylon Synthetic Fiber) Effectiveness in Stabilizing Weak Subgrade Soil: An Experimental Investigation

Demsie,

Beyene,

Lemma

et al. 2023

Advances in Civil Engineering

View full text Add to dashboard Cite

Improvement in subgrade soil has always been an area of concern for highway and geotechnical engineers. Weak subgrade soil results in a greater thickness of the pavement layer, which increases the cost of pavement construction. It further leads to large deformations, which in turn cause continuous deterioration of the paved surface. To solve this problem, various engineering solutions and soil improvement mechanisms were previously proposed. This study was designed to investigate the stabilization of weak subgrade soil with nylon synthetic fiber (NSF) in a compromising combination. Previously, some investigations used a lower fiber content with a higher fiber length, whereas others used a lower fiber length with a higher fiber content. However, this investigation was uniquely designed to stabilize weak subgrade soil with the consideration of appropriate fiber length (10 mm and 20 mm) and content (0.5%, 1%, 1.5%, and 2.5%). The engineering properties of the soil, the effect of NSF on weak subgrade soil, various fiber content and aspect ratios, and the optimum content and critical fiber aspect ratio were investigated in a laboratory. The effect of fibers on compaction, CBR values, and CBR swell values has also been studied. Laboratory results on the modified compaction tests showed that maximum dry density (MDD) was increased with the increment of fiber content, whereas optimum moisture content (OMC) remained constant. The soaked CBR and CBR swell values of natural soil were 1.80% and 8.95%, respectively. Due to reinforcement, the percentage increase in soaked CBR value at the optimum NSF content is 265.3, 310.0, 282.8, and 342.2 for aspect ratios of 33.33, 66.67, 25, and 50, respectively, with reference to natural soil. Also, the percentage decrease in swelling is 34.7, 52.75, 43.55, and 36.9, respectively. Moreover, the CBR value increases with the increase in aspect ratio by keeping the diameter constant and decreases with the increase in aspect ratio by keeping the length constant. It was also observed that increasing the length and diameter of NSF further increased the CBR value of reinforced soil. This increment was substantial at a fiber content of 1.5% for an aspect ratio of 50 (length = 20 mm, diameter = 0.4 mm). There was also a decrease in the CBR swelling value with an increase in fiber content. Finally, this investigation concluded that the use of NSF is a solution to weak soils with regard to moisture and performance problems.

show abstract

Effect of natural and synthetic fibers reinforcement on California bearing ratio and tensile strength of clay

Cited by 25 publications

References 33 publications

Review of Subgrade Soil Stabilised with Natural and Synthetic Fibres

Review of Subgrade Soil Stabilised with Natural and Synthetic Fibres

Tensile Strength and Durability of Oil Palm Empty Fruit Bunch Fiber in Soft Soil

NSF (Nylon Synthetic Fiber) Effectiveness in Stabilizing Weak Subgrade Soil: An Experimental Investigation

Contact Info

Product

Resources

About