Article
Materials Science, Textiles
Mohit Arora, R. K. Dutta, D. K. Soni
Summary: The study examined the bearing ratio behavior of sand overlying silty sandy with treated coir geotextiles under unsoaked and soaked conditions. It was found that the treated coir geotextiles showed better performance in unsoaked conditions, with the best results achieved when both woven/non-woven geotextiles were treated with sodium hydroxide followed by potassium permanganate.
JOURNAL OF NATURAL FIBERS
(2021)
Article
Engineering, Geological
Meenakshi Singh, Ashutosh Trivedi, Sanjay Kumar Shukla
Summary: The common cause of failure for unpaved roads is related to undesirable ruts and deformations. The use of geosynthetic reinforcement is a solution to this problem, but research in this area is limited. This study investigated the effect of geosynthetic reinforcement on the deformation of unpaved roads through wheel load tests. The results showed that the inclusion of geosynthetic reinforcement significantly improved the stability and rutting resistance of the road surface.
GEOTEXTILES AND GEOMEMBRANES
(2022)
Article
Materials Science, Textiles
Vivek, Mohammad Shafi Mir, Rakesh Sehgal
Summary: This study uses the finite element method to analyze the ultimate bearing capacity of an unpaved road model under unsoaked and soaked conditions. By using ABACUS software, the numerical simulation reveals the variation in stresses, displacement pattern, and bearing capacity with the inclusion of untreated and treated coir geotextiles. Further validation through experimental research is recommended.
JOURNAL OF NATURAL FIBERS
(2022)
Article
Engineering, Geological
H. M. G. Eldesouky, R. W. I. Brachman
Summary: A new general method is proposed to calculate local strains in geomembranes under vertical pressure from their deformed shape caused by coarse gravel particles. The method takes into account lateral displacements in addition to vertical displacements and uses a thin plate model with three-dimensional displacements. Vertical and lateral displacements are related by large-strain-displacement relationships and compatibility of strains, and normal and shear strains are calculated using Airy's stress function and a linear elastic constitutive law. Bending and torsional strains are also considered to find strains on the top and bottom surfaces. The method is validated using known displacements and strains from finite element analysis, and applied to a physical test on a geomembrane.
GEOTEXTILES AND GEOMEMBRANES
(2023)
Article
Construction & Building Technology
Priya Jaswal, Vivek
Summary: Traffic loading is one of the most important and complex factors affecting the functional performance of unpaved roads. This study demonstrates the beneficial effect of reinforcing coir geotextiles on the load-deformation behavior of unpaved road models. The inclusion of treated coir geotextiles has been found to increase the bearing capacity and eliminate the need for a rigorous base course in unpaved roads. The lateral confinement of soil particles by geotextiles is identified as the primary reinforcement mechanism.
INTERNATIONAL JOURNAL OF PAVEMENT RESEARCH AND TECHNOLOGY
(2023)
Article
Chemistry, Physical
Konrad Malicki, Jaroslaw Gorszczyk, Zuzana Dimitrovova
Summary: This paper presents the results of laboratory tests on the effect of recycled geogrid on the bearing capacity of soils, showing that recycled geogrid can improve the bearing capacity of pavement subgrade. The shape of geogrid cuttings and the type of soil affect the level of improvement in road and rail subgrade stability.
Article
Engineering, Multidisciplinary
Kareem Othman, Hassan Abdelwahab
Summary: The study aims to provide artificial neural network (ANN) prediction models for efficiently estimating the CBR value of subgrade soil in Egypt. Deep neural networks outperform shallow ANNs, and compared to traditional multiple linear regression (MLR) models, ANNs demonstrate better performance and produce highly accurate predictions.
AIN SHAMS ENGINEERING JOURNAL
(2023)
Article
Engineering, Geological
Jiying Fan, R. Kerry Rowe
Summary: Experiments were conducted to measure the short-term tensile strains in a 1.5 mm thick high-density polyethylene geomembrane overlain by tailings. Different subgrade conditions and nonwoven geotextiles were evaluated, and it was found that all the indentations in the geomembrane were due to subgrade conditions. A suitable fraction of sand particles in the subgrade could minimize the tensile strains. The SM subgrade prepared at the optimum water content of 11% showed minimal indentation and therefore could achieve a very long service life of the geomembrane.
CANADIAN GEOTECHNICAL JOURNAL
(2023)
Article
Engineering, Geological
Jiying Fan, R. Kerry Rowe
Summary: Experiments were conducted to quantify short-term tensile strains induced in a high-density polyethylene geomembrane overlain by tailings. It was found that using a subgrade with an adequate fraction of sand size particles can minimize the tensile strains, and using geotextiles can further reduce the strains.
CANADIAN GEOTECHNICAL JOURNAL
(2022)
Article
Engineering, Geological
Shubham A. Kalore, G. L. Sivakumar Babu
Summary: This paper proposes a design criterion for the hydraulic conductivity requirements of a filter and validates the developed model through experimental evaluations. The model is applicable for both saturated and partially saturated conditions and offers an improvement in the design standards and guidelines for protective filters.
GEOTEXTILES AND GEOMEMBRANES
(2022)
Article
Engineering, Geological
Md Wasif Zaman, Jie Han, Xiong Zhang
Summary: This study investigated the wettability of three different types of geotextiles (wicking woven, non-wicking woven, and nonwoven) and found that the wicking woven geotextile had a lower contact angle and faster water penetration compared to the other two types of geotextiles.
GEOTEXTILES AND GEOMEMBRANES
(2022)
Article
Engineering, Geological
M. W. Khan, A. R. Dawson, A. M. Marshall
Summary: This paper presents the results from GR filtration tests with different types of soils under dynamic loading conditions, using four non-woven geotextiles. The tests show that dynamic loading increases soil migration within the soil and the quantity of soil passing through the geotextiles. The authors suggest improvements to filter retention design criteria, taking into account the internal stability of soils under dynamic loading.
GEOTEXTILES AND GEOMEMBRANES
(2022)
Article
Geosciences, Multidisciplinary
Longxi Cao, Yi Wang, Can Liu
Summary: Road-related soil erosion is a significant issue that can be properly evaluated using terrestrial laser scanning. The study in Southeast China found that soil losses from unpaved roads were closely related to segment length, gradient, and upstream flow area. Predictive models based on gradient and distance were effective in estimating erosion risk along roads.
Article
Engineering, Geological
S. T. Kadhim, R. L. Parsons, J. Han
Summary: Geotextile encasement can enhance the axial capacity and reduce deformations of individual sand columns. Smaller diameter GESaCs exhibit higher axial pressure capacities, and GESaCs with smaller length to diameter ratios have higher axial capacities. Columns in loose sand show lower radial and axial strains compared to those in air.
GEOSYNTHETICS INTERNATIONAL
(2022)
Article
Materials Science, Textiles
Vivek, Mohammad Shafi Mir, Rakesh Sehgal
Summary: This study investigated the modulus of resilience of unpaved roads reinforced with untreated/treated woven/non-woven coir geotextiles. Models reinforced with untreated/treated woven coir geotextiles performed better, especially in unsoaked conditions.
JOURNAL OF NATURAL FIBERS
(2022)
