Минакава Харуна .. .., T. Джираватанасамукуру .. .., Tamon Ueda .. ..

COMPRESSIVE BEHAVIOR OF LOW STRENGTH CONCRETE CONFINED WITH WATER HYACINTH AND JUTE NFRP

This paper presents the results of an experimental study of compressive behavior of
concrete confined by natural fiber reinforced polymer jackets. Previous study shows that concrete which lateral expansion is confined increases compressive strength and ultimate strain
and enhances strength and ductility. Fiber reinforced polymer (FRP) is widely used us external
jacket of confined concrete. FRP having high stiffness such as Carbon-FRP and Glass-FRP is
practically used for seismic reinforcement. However, these FRP composites have high production cost and larger environmental burden. NFRP is expected to be alternate jacket material
with lower cost and more eco-friendly material. This study aims to investigate their mechanical properties of NFRP by coupon tensile test and observe compression strength improvement
of concrete which has two different compressive strength confined with NFRP.

Keywords: compressive strength, Confinement, natural fiber Jute-NFRP Water Hyacinth-NFRP, ограничение, полимер из натурального волокна Водного Гиацинта (NFRP), полимер из натурального волокна Джута (NFRP), прочность