For concrete floor slab fiber reinforced resin permanent formwork, construction methods and fiber reinforced resin of concrete floor slab - reinforced concrete composite floor version

摘要

PURPOSE:To makde construction with a light-weight formwork easier by shortening the period of construction and also by raising the durability of floor slabs and the strength of concrete to prevnet cracking by a method in which the floor slab having high strength and light weight is formed by using a permanent formwork serving as a fortifying part integrately with reinforced concrete after placing concrete. CONSTITUTION:A floow slab 2 and plate-shaped ribs 3 set in parallel at a given interval, which are to be set vertically to the surface of the floor slab, are formed integrally with a fibre-reinforced resin. For the ribs 3, a formwork 1 having notches 7 formed from the upper edge of rib for reinforcement is placed between the girders of road bridge, and reinforcing bars 9 are arranged in a latticed form vertically and in parallel with the ribs 3. Concrete 14 is placed into the formwork 1 to form a floor slab by integrating the reinforced concrete with the fibre-reinforced resin formwork 1.