CONSTRUCTION METHOD FOR CONCRETE BODY WITH PERVIOUS PARTS AND CONCRETE FORM MADE OF CLOTH FOR THE USE

摘要

PURPOSE:To construct a concrete body with inherent pervious parts easily with less cost by a method wherein mortar is placed into a with pervious parts at the constricted part of the form and the mortar is filled and set therein. CONSTITUTION:A cloth sheet made of a synthetic fibre having a high strength like nylon is built up into a cylindrical bag body 1 and constricted intermittently at the parts wound with small rings of the similar fabric. Besides ring shaped pervious material 3 made with irregularly entangled hard plastic fiber is wound at the constricted parts to form the concrete form made of cloth. The forms are laid side by side on the ground, and mortar or concrete is poured to fill the form using a pump. A cylindrical concrete body 7 with swelled concrete and intermittent constricted parts of sourrounded pervious material 3 is thus obtd. The constricted parts 4 serves as a water path from the rear surface to the front surface.