Performance of geosynthetic cementitious composite mat and vetiver on soil erosion control

Likitlersuang, Suched; Kounyou, Kittikhun; Prasetyaningtiyas, Gayuh Aji

doi:10.1007/s11629-019-5926-5

Cited by 31 publications

(13 citation statements)

References 35 publications

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“…Soil bioengineering has been considered an environmentally friendly and cost‐effective approach for shallow soil stabilisation and soil erosion control. The presence of roots with different classes of diameter in a soil matrix can increase soil shear strength, improve slope stability, and control soil erosion through mechanical and hydrological reinforcements (Boldrin et al, 2017; Eab et al, 2014; Kamchoom et al, 2014; Likitlersuang et al, 2017; Likitlersuang et al, 2020; Nguyen et al, 2019; Nguyen et al, 2020; Wang et al, 2021). Root systems provide hydrological reinforcement by increasing soil suction through water uptake and transpiration (Kamchoom & Leung, 2018; Leung et al, 2015; Simon & Collison, 2002).…”

Section: Introductionmentioning

confidence: 99%

Root biomechanical properties of Chrysopogon zizanioides and Chrysopogon nemoralis for soil reinforcement and slope stabilisation

et al. 2021

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Plant root reinforcement in soil bioengineering has gained increasing interest as a means of sustainable and environmentally friendly soil reinforcement and stabilisation. While Chrysopogon zizanioides is widely distributed in tropical regions worldwide and has been advocated for use in slope stabilisation and soil erosion control, C. nemoralis is normally distributed in mountainous areas in Southeast Asian countries, and its potential to reinforce soil has rarely been explored in the soil bioengineering literature. With the importance of root properties in soil bioengineering, this study was carried out to provide a comprehensive dataset of root biomechanical properties, morphological traits, and root reinforcement of these two contrasting vetiver species. A series of experiments, including root observation with a rhizobox system, uniaxial tensile test, and direct shear test, was performed. Results showed that Young's modulus and diameter of C. nemoralis roots were almost 1.4‐ and 1.3‐times greater than those of C. zizanioides roots (p < 0.05). By contrast, no significant difference between the two vetiver species was observed in terms of tensile strength, 'side' root area ratio (RARS), and root orientation (p > 0.05). The diameter–strength (R2 = 0.55–0.56, p < 0.05) and diameter–modulus relationships (R2 = 0.51–0.6, p < 0.05) of both species were consistent with negative power‐law models. Conversely, their diameter–orientation relationship followed a linear model (R2 = 0.85–0.89; p > 0.05). The soil shear strength in terms of cohesion greatly increased in the presence of the roots of C. nemoralis (Δc = 4.9 kPa) and C. zizanioides (Δc = 4.4 kPa). Therefore, C. nemoralis could be an alternative to C. zizanioides in soil bioengineering applications.

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Section: Introductionmentioning

confidence: 99%

Root biomechanical properties of Chrysopogon zizanioides and Chrysopogon nemoralis for soil reinforcement and slope stabilisation

et al. 2021

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“…A number of physical and numerical models were developed to investigate the stability of root-reinforced slopes under artificial rainfall infiltration (Likitlersuang et al 2017(Likitlersuang et al , 2020Nguyen et al 2020). Ngo et al (2019) conducted physical modeling tests to study the performance of a novel geosynthetic cementitious composite mat on sandy soil slopes under seepage conditions.…”

Section: Introductionmentioning

confidence: 99%

“…The centrifuge models showed that the root bundle improved the slope stability by reducing the rainwater infiltration into the ground, delaying the increase in the groundwater table and increasing the shear strength of the slope soil (Eab et al 2014(Eab et al , 2015. Numerical models were established to validate the physical modeling tests (Likitlersuang et al 2017(Likitlersuang et al , 2020.…”

Section: Introductionmentioning

confidence: 99%

The use of geocell as soil stabilization and soil erosion countermeasures

Song

et al. 2021

Geomatics, Natural Hazards and Risk

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This work proposed a composite soil reinforcement method to support the vegetation growth and improve slope stability using geocell structures and wheat straws. Twelve physical models were developed for assessing rainfall intensities, slope steepness and geocell sizes on the soil erosion. The results showed that: (1) the geocell reinforced slopes maintained a good integrity, but the bare slope showed horizontal cracks; (2) the soil erosion was less than 40 g and more than 4000 g under the 50 mm/h and 100 mm/h rainfall intensities; the largest slope displacement was 2.5 mm and 7.5 mm, respectively; (3) the steep slopes showed a largest soil erosion of 5000 g and largest displacement of 8 cm, compared to 4500 g and 5.5 cm for gentle slopes; soil water contents were 40% and 30% for the steep and gentle slopes; (4) the measured soil erosion under the 100 mm/h rainfall was 4000 g and 5000 g for the small and large geocell reinforced slopes; the displacement of small geocell reinforced slopes were typically 1-2.5 cm smaller than large geocell reinforced slopes. It is concluded that the small geocell reinforced slope at a small inclination and low rainfall intensity has the best stability.

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“…In this experiment, planting was performed in the spring suitable for growth to ensure the growth period. As the effects of vetiver grass on soil and water conservation are evident, it is considered suitable for use on slopes and river banks to prevent soil erosion [27,28].…”

Section: Study Sitementioning

confidence: 99%

Functionality Optimizing Study On Coal-bearing Soil Ecological Substrates

Huang

Zheng

2022

Preprint

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Ecological restoration is of profound significance for protecting the ecology and engineering safety of coal-bearing soil (CBS) areas. However, the formulations of CBS ecological substrates have rarely been explored. The objective of this study was therefore to evaluate the effects of the CBS:soil ratio (1000:0 g, 750:250 g, 500:500 g, 250:750 g), fly ash content (0, 50 g·kg− 1, 100 g·kg− 1, 150 g·kg− 1), maize straw content (0, 20 g·kg− 1, 40 g·kg− 1, 60 g·kg− 1), and expanded polystyrene (EPS) content (0, 3 g·kg− 1,6 g·kg− 1, 9 g·kg− 1) in an orthogonal design to optimize an ecological substrate according to various physicochemical, nutrient content, mechanical, and vegetation parameters. The results indicated that the CBS:soil ratio had significant effects on the nutrient content and vegetation growth parameters; fly ash dramatically improved the mechanical parameters (shear strength, cohesion, and internal friction angle); maize straw significantly affected the physical parameters and improved the substrate nutrient content; and EPS was the most beneficial to the vegetation germination ratio. A CBS:soil ratio of 1:1 (500:500 g), fly ash content of 100 g·kg− 1, maize straw content of 50 g·kg− 1, and EPS content of 6 g·kg− 1 were determined to produce the optimal mix for the ecological restoration of CBS. The conclusions of this research provide theoretical and practical guidance for the ecological restoration and stabilization protection of CBS slopes.

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Performance of geosynthetic cementitious composite mat and vetiver on soil erosion control

Cited by 31 publications

References 35 publications

Root biomechanical properties of Chrysopogon zizanioides and Chrysopogon nemoralis for soil reinforcement and slope stabilisation

Root biomechanical properties of Chrysopogon zizanioides and Chrysopogon nemoralis for soil reinforcement and slope stabilisation

The use of geocell as soil stabilization and soil erosion countermeasures

Functionality Optimizing Study On Coal-bearing Soil Ecological Substrates

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