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Examinando por Autor "YASNA IVETTE BARRA RODRÍGUEZ"

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    USE OF CARBON AND BASALT FIBERS WITH ADHESIVES TO IMPROVE PHYSICAL AND MECHANICAL PROPERTIES OF PLYWOOD
    (Applied Sciences-Basel, 2022)
    CAMILA ALINE OPAZO CARLSSON
    ;
    YASNA IVETTE BARRA RODRÍGUEZ
    ;
    BORIS ESTEBAN MOYA ROJAS
    ;
    MARCELA ALEJANDRA VIDAL VEGA
    ;
    ALEXANDER IGOR OPAZO VEGA
    ;
    MARIO ANTONIO NÚÑEZ DECAP
    CURRENTLY, WOOD IS PRESENTED AS AN ALTERNATIVE TO TRADITIONAL BUILDING MATERIALS AND TO MITIGATE CLIMATE CHANGE. CHILE IS ONE OF THE EIGHT LARGEST WOOD PRODUCERS IN THE WORLD; THEREFORE, WOOD-BASED PRODUCTS ARE AN EASILY ACCESSIBLE RESOURCE. THE AIM OF THIS RESEARCH IS TO REINFORCE AT LABORATORY SCALE PLYWOOD PANELS WITH BASALT AND CARBON ENGINEER FIBERS USING EPOXY RESIN AND POLYVINYL ACETATE AS AN ADHESIVE SYSTEM TO IMPROVE THEIR PHYSICAL AND MECHANICAL PROPERTIES. THREE-POINT STATIC BENDING AND JANKA HARDNESS TESTS WERE CARRIED OUT. THE RESULTS SHOWED A BETTER PERFORMANCE IN THE REINFORCED BOARDS, WHICH SHOWED AN INCREASE IN MODULUS OF ELASTICITY (MOE) AND MODULUS OF RUPTURE (MOR) PROPERTIES IN THE PARALLEL DIRECTION OF ABOUT 48.2% AND 52.8%, RESPECTIVELY. ADDITIONALLY, FOR THE PERPENDICULAR DIRECTION, THERE WAS AN INCREASE OF 52.0% AND 102.9%, RESPECTIVELY. ON THE OTHER HAND, THE FIBER REINFORCED POLYMER (FRP) PLYWOOD PANELS SHOWED AN INCREASE OF AT LEAST 37% ON THE JANKA HARDNESS PROPERTY, OBTAINING HIGHER RESULTS WITH THE POLYVINYL ACETATE (PVA) ADHESIVE. FINALLY, FRP?PLYWOOD, PVA?BF AND PVA?CF MAY BE A NEW OPTION FOR COMPOSITE WOOD MATERIALS, WITH THEIR DUCTILE BEHAVIOR AND SUPERIOR MECHANICAL PROPERTIES, ESPECIALLY IN THE PERPENDICULAR DIRECTION, WHERE THE INCREASES WERE GREATER THAN THOSE SHOWN IN UNREINFORCED PLYWOOD.

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