“…The bearing ratio of two layered pavement model in unsoaked condition is 9.6% and 15% higher and in soaked condition 38% and 42% higher with treated W1 and W2 coir geotextiles at the interface respectively, in comparison to the two layered pavement model with untreated W1 and W2 coir geotextiles at the interface. Similar observations have been reported by researchers 21,26,35 in their study. Also, the bearing ratio of sand overlying clay with untreated/treated Type W2 woven coir geotextiles at the interface is higher than untreated/treated Type W1 coir geotextiles at the interface.…”
Section: Bearing Ratio Behavior Of Untreated and Treated Woven Coir G...supporting
confidence: 93%
“…This is due to the high tensile elongation, bulk density, mass per unit area of PP net as mentioned in Table 4 and the existence of fibers which are more entangled, hooked, and looped in Type NW2 as compared to Type NW1. 35 Figure 3.Load versus deformation curve for untreated and treated coir geotextiles in unsoaked and soaked condition (a) untreated and treated Type NW1 coir geotextiles in unsoaked condition (b) untreated and treated Type NW2 coir geotextiles in unsoaked condition (c) untreated and treated Type NW1 coir geotextiles in soaked condition (d) untreated and treated Type NW2 coir geotextiles in soaked condition. Thermogravimetric analysis of woven and non woven coir geotextiles.…”
Section: Resultsmentioning
confidence: 99%
“…The SEM images of all the untreated coir geotextiles witness the presence of voids, cracks and other impurities on the fiber surface. 35 These imperfections do not contribute positively to the load bearing capacity of the sand overlying clay model. After treatment, the surface of coir fiber is free from surface debris and the fiber is covered with a layer of unsaturated polyester resin and bitumen emulsion resulting in filling up the voids and cracks.…”
Section: Scanning Electron Micrograph Studymentioning
confidence: 97%
“…Bearing ratio test was used to determine the pavement thickness in accordance with. 35 The required pavement thickness of an unreinforced two layered pavement model and an untreated/treated coir fiber geotextile reinforced two layered pavement model is given in Table 7. It can be observed from Table 7 that the required thickness of two layered pavement models reinforced with untreated coir geotextiles is less in comparison to an unreinforced pavement model.…”
Section: Economic Analysismentioning
confidence: 99%
“…Bearing ratio test was used to determine the pavement thickness in accordance with. 35 The required pavement thickness of an unreinforced two layered pavement model and an untreated/treated coir fiber geotextile reinforced two layered pavement model is given in Table 7.…”
Section: Thermogravimetric Analysis Of Woven and Non Woven Coir Geote...mentioning
The primary objective of this research work is to study the effect of surface treated coir geotextiles on the bearing behaviour of sand overlying clay model with geotextiles at the interface. Two woven and two non woven coir geotextiles were treated with bitumen emulsion and unsaturated polyester resin. The surface morphology and thermal stability were investigated by scanning electron micrograph and simultaneous thermal analyser respectively. The bearing ratio of sand overlying clay increased with treated woven/non woven coir geotextiles at the interface in soaked and unsoaked condition. The bearing ratio was higher for treated/untreated and woven/non woven coir geotextiles at the interface in unsoaked condition as compared to soaked condition. The chemical treatment improved the thermal stability of surface treated coir geotextiles through physical and chemical changes.
“…The bearing ratio of two layered pavement model in unsoaked condition is 9.6% and 15% higher and in soaked condition 38% and 42% higher with treated W1 and W2 coir geotextiles at the interface respectively, in comparison to the two layered pavement model with untreated W1 and W2 coir geotextiles at the interface. Similar observations have been reported by researchers 21,26,35 in their study. Also, the bearing ratio of sand overlying clay with untreated/treated Type W2 woven coir geotextiles at the interface is higher than untreated/treated Type W1 coir geotextiles at the interface.…”
Section: Bearing Ratio Behavior Of Untreated and Treated Woven Coir G...supporting
confidence: 93%
“…This is due to the high tensile elongation, bulk density, mass per unit area of PP net as mentioned in Table 4 and the existence of fibers which are more entangled, hooked, and looped in Type NW2 as compared to Type NW1. 35 Figure 3.Load versus deformation curve for untreated and treated coir geotextiles in unsoaked and soaked condition (a) untreated and treated Type NW1 coir geotextiles in unsoaked condition (b) untreated and treated Type NW2 coir geotextiles in unsoaked condition (c) untreated and treated Type NW1 coir geotextiles in soaked condition (d) untreated and treated Type NW2 coir geotextiles in soaked condition. Thermogravimetric analysis of woven and non woven coir geotextiles.…”
Section: Resultsmentioning
confidence: 99%
“…The SEM images of all the untreated coir geotextiles witness the presence of voids, cracks and other impurities on the fiber surface. 35 These imperfections do not contribute positively to the load bearing capacity of the sand overlying clay model. After treatment, the surface of coir fiber is free from surface debris and the fiber is covered with a layer of unsaturated polyester resin and bitumen emulsion resulting in filling up the voids and cracks.…”
Section: Scanning Electron Micrograph Studymentioning
confidence: 97%
“…Bearing ratio test was used to determine the pavement thickness in accordance with. 35 The required pavement thickness of an unreinforced two layered pavement model and an untreated/treated coir fiber geotextile reinforced two layered pavement model is given in Table 7. It can be observed from Table 7 that the required thickness of two layered pavement models reinforced with untreated coir geotextiles is less in comparison to an unreinforced pavement model.…”
Section: Economic Analysismentioning
confidence: 99%
“…Bearing ratio test was used to determine the pavement thickness in accordance with. 35 The required pavement thickness of an unreinforced two layered pavement model and an untreated/treated coir fiber geotextile reinforced two layered pavement model is given in Table 7.…”
Section: Thermogravimetric Analysis Of Woven and Non Woven Coir Geote...mentioning
The primary objective of this research work is to study the effect of surface treated coir geotextiles on the bearing behaviour of sand overlying clay model with geotextiles at the interface. Two woven and two non woven coir geotextiles were treated with bitumen emulsion and unsaturated polyester resin. The surface morphology and thermal stability were investigated by scanning electron micrograph and simultaneous thermal analyser respectively. The bearing ratio of sand overlying clay increased with treated woven/non woven coir geotextiles at the interface in soaked and unsoaked condition. The bearing ratio was higher for treated/untreated and woven/non woven coir geotextiles at the interface in unsoaked condition as compared to soaked condition. The chemical treatment improved the thermal stability of surface treated coir geotextiles through physical and chemical changes.
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