아라미드 섬유강화 및 고무조성에 따른 콘크리트 도킹호스의 파열압력과 내마모도 특성

Characteristics of Burst Pressure and Abrasion Resistance of Concrete Hose with Aramid Fiber Reinforcement and Rubber Composition

A concrete docking hose of pump car's boom pipe line have been used in many construction sites. They are long structures with continuous cornering, similar to a trunk of the elephant, characterized by a very high pressure resistance of 20MPa. They need flexible materials and structure in order to move the hose smoothy. But commercial concrete hose is hard to handle and heavy owing to adaption of steel reinforcement. In this study, it is tried an experimental approach to the characteristic of inner rubber layer and abrasion resistance. Also, we are investigated the bursting pressure according to the reinforcement of the hose and propose the usefulness of the hose reinforced with high strengthened aramid fiber.