| 摘要 |
PURPOSE:To provide functions at the same time satisfactory for the pressure- resistant strength on injecting a hardening agent into a cylinder, for filtering and molding, by covering the cylinder with a wire mesh, in a pipe having a cloth cylinder at the outer peripheral face for a bored precast pile bore hole. CONSTITUTION:A cloth cylinder 2 is applied on the outer peripheral face of a pile 3 and attached at the upper and lower ends thereof. And the outer peripheral face is covered with a wire mesh 1. In this way, when a hardening agent is injected in the cloth cylinder to expand it, it can be rapidly and well formed and also the bearing force of the pile can be increased. |
