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Author: search.filters.author.Mase, Lindung ZalbuinSubject: search.filters.subject.Para rubber

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    Environmental Effects on the Interface Shear Strength of Geomembrane made from Rubber Compound Sheet
    (2025-01-01)
    Chaiyaput, Salisa
    ;
    Liangsunthonsit, Anubud
    ;
    Mase, Lindung Zalbuin
    ;
    Ayawanna, Jiratchaya
    The concept of utilizing a rubber compound sheet (RCS) made from natural materials as a substitute for polymer plastics was investigated. In this study, the functions of RCS as a geomembrane were investigated. Testing on thickness, mass per unit area, tensile strength, and interface shear strength behavior under various environmental conditions or various curing conditions, including air, tap water, and wastewater (acid water (pH 6) and base water (pH 9)) for 90- and 180-curing days, were conducted. It was found that the properties of the RCS geomembrane, such as thickness, mass per unit area, tensile strength, and interface shear strength, were not affected by various curing conditions. The results confirmed that the RCS geomembrane can function as a geomembrane.
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    Feasibility study of using natural para rubber for reinforced embankment
    (2023-12-01)
    Chaiyaput, Salisa
    ;
    Jaroonrat, Pakkapon
    ;
    Liangsunthonsit, Anubud
    ;
    Mase, Lindung Zalbuin
    ;
    Kotkhangphlu, Pornsuda
    This research developed a natural para rubber from rubber tree sap as a biodegradable-reinforced material in geogrid application with the purpose of membrane support, bearing capacity increment, and lateral restraint in embankment construction. Biaxial geogrids with an aperture size of 20 mm × 20 mm were prepared from the ribbed smoked sheet (RSS) made of the coagulated latex sheets, and rubber compound sheet (RCS) made of chemically modified RSS sheet to increase the rubber performance were investigated and compared. The performance of RSS and RCS was evaluated under the actual situation in a field test with an area of 4.5 m-length x 1 m-width with 0.5 m-depth. In each studied area of the reinforced zone, RSS and RCS were separately inserted at 250 and 450 mm from the base of a field test as the 1st and 2nd reinforcement layers, respectively. The load was applied to simulate the traffic load. The RSS- and RCS-reinforced zones in the field test were compared with the non-reinforced zone in terms of settlement and rut depth. The drastic settlement and rut depth were significantly detected in non-reinforced zones compared to the reinforced zones. Meanwhile, higher settlement and rut depth were observed at RSS-reinforced zones compared to the RCS-reinforced zones. The RCS geogrid in this research was successfully applied as a functional biodegradable-reinforced material for embankment construction.