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Subsurface Drainage Structures – Construction and Maintenance
Published in G.L. Sivakumar Babu, Prithvi S. Kandhal, Nivedya Mandankara Kottayi, Rajib Basu Mallick, Amirthalingam Veeraragavan, Pavement Drainage, 2019
G.L. Sivakumar Babu, Prithvi S. Kandhal, Nivedya Mandankara Kottayi, Rajib Basu Mallick, Amirthalingam Veeraragavan
Criteria for the design of the geotextile layer includes soil retention, permeability, clogging, survivability and endurance. Typical successful geotextile is nonwoven (needle punched, polypropylene, stapled fiber) geotextile with a weight/area of 350 gm/m2 and it is assumed to have no contribution of the structural design.
Development of recycled geotextiles towards circular economy
Published in Cândida Vilarinho, Fernando Castro, Margarida Gonçalves, Ana Luísa Fernando, Wastes: Solutions, Treatments and Opportunities III, 2019
J.R. Carneiro, F. Almeida, M.L. Lopes
Geotextiles are polymeric materials (most often synthetic) commonly used in civil and environmental engineering applications. These materials can perform many different functions, such as separation, protection, drainage, filtration or reinforcement (Fig. 1). Due to their high versatility, high efficiency, relative low cost and ease of installation, geotextiles can be applied, for example, in roads, railways, waste landfills, embankments, stabilisation of slopes, erosion control or coastal protection structures. Polypropylene, polyethylene, polyesters and polyamides are the most common polymers used for manufacturing geotextiles. Chemical additives, such as antioxidants and/or ultraviolet (UV) stabilisers are often added to the base polymers of the geotextiles. The polymeric mixtures are converted into filaments, fibres or strips, which are used as components to produce woven or nonwoven geotextiles (Fig. 2).
Effect of randomly distributed jute fibers on design of soil subgrade
Published in Alka Mahajan, B.A. Modi, Parul Patel, Technology Drivers: Engine for Growth, 2018
H. M. Rangwala, H.M. Kamplimath, A. Kanara, M. Ratlami, M. Kothari, M. Khatri
Ground improvement has been the primary application of many geotechnical construction techniques, permitting construction on weak soils by changing their characteristics. Soil mixing increases shear strength and reduces the compressibility and permeability of soft soils. Rigid inclusions reduce settlement and increase the bearing capacity of weak underlying stratum. At present, synthetic geotextiles are extensively used throughout the world for the protection of the banks and beds of waterways, strengthening of roads, stabilization of embankments, management of slopes, consolidation of soft soil, and other soil-related engineering applications. Geotextiles are a type of technical textile that are used in or on soil to improve its behavior and performance. Geotextiles were first developed in developed countries by making use of man-made polymers. Naturally available materials can also be used in the improvement of soil properties, for example bamboo fiber, coir fiber, and jute fiber.
Evaluating aqaba marine sand geotextile interface shear strength
Published in International Journal of Geotechnical Engineering, 2020
Omar Al Hattamleh, Samer Rabab’Ah, Hussein Aldeeky, Husam Al Qablan
Interface shear strength is a critical factor in the design of many structures involving geotextiles (Hatami and Esmaili 2015; Vieira, Lopes, and Caldeira 2015; Wang et al. 2016; Punetha, Mohanty, and Samanta 2017; Anubhav and Wu. 2015; Dixon and Jones 2005; Bergado et al. 2006; Aldeeky, Al Hattamleh, and Alfoul 2016; Brahim et al. 2016). Extensive geotextile reinforcing of soil is increasingly desired to improve the performance of the earth structure under various soil conditions. Consequently, the use of geotextiles is frequently adopted in reinforced earth retaining walls, embankments, slopes, and foundation beds due to its superiority in active seismic regions. Moreover, low-volume roads, which make up roughly two-thirds of all the roads worldwide, or almost 30 million kilometres of roads, represent one of the biggest fields for the utilization of geotextiles (Keller 2016). Geotextiles have been used for subgrade separation and stabilization over very soft soils, or to reduce the thickness of aggregate placed over moderately soft soils. High-strength woven polypropylene geotextiles are commonly used in geosynthetic-reinforced soil bridge abutments, reducing the cost up to 60% compared to conventional bridge construction (Adams et al. 2011; Keller 2016).
Bearing capacity performance of soft cohesive soil treated by kenaf limited life geotextile
Published in Marine Georesources & Geotechnology, 2020
Ahmad Safuan A Rashid, Mohammad Gharehzadeh Shirazi, Ramli Nazir, Hisham Mohamad, Fauzan Sahdi, Suksun Horpibulsuk
A geotextile is typically defined as any permeable textile material used to increase soil stability, provide erosion control or aid in drainage. Geotextiles are usually made from a synthetic polymer such as polypropylene, polyester, polyethylene and polyamides. Geotextiles can be woven, knitted or non-woven. Varying polymers and manufacturing processes result in an array of geotextiles suitable for a variety of civil construction applications. Non-woven geotextiles resemble felt and provide planar water flow. They are commonly known as filter fabrics. Typical applications for non-woven geotextiles include aggregate drains, asphalt pavement overlays and erosion control (Koerner 2016; Saba, Paridah, and Jawaid 2015).
Biogeocomposite material and its heavy metal adsorption potential from aqueous solutions
Published in International Journal of Sustainable Engineering, 2018
Geetha Varma. V, Anil Kumar Misra, Amit Srivastava
Geotextiles have been defined as woven, nonwoven or knitted fabrics having application in civil engineering, such as interfacing of the fabric with soil to give reinforced structures. Nonwoven Geotextile Fabrics are highly water permeable and have a random, three-dimensional pore structure. Geotextile material which is non woven and made of polypropylene fabric was used to support the absorption process here. For dynamic mode studies, it is cut and stitched into a cylindrical form so that it exactly fit into the column structure. The properties of the geotextile material used here are given in Table 1.