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CONCRETE CONVEYING PIPE
To provide a concrete conveying pipe not provided with a metal pipe, the concrete conveying pipe having excellent conveying performance, being light, and excellent in safety.SOLUTION: A concrete conveying pipe 10 not provided with a metal pipe, has a cylindrical body 1 made from a resin, in which a coefficient of dynamic friction on an inner surface of the cylindrical body is 0.07-0.15, the cylindrical body does not cause explosion or leakage in a water pressure resistance test of 25 MPa, and permeability per a specimen having a thickness of 2 mm of the cylindrical body is 10% or more.SELECTED DRAWING: Figure 1
【課題】金属管を有しないコンクリート圧送管であって、優れた圧送性能を有し、軽く、安全性に優れたコンクリート圧送管を提供する。【解決手段】金属管を備えないコンクリート圧送管１０であって、樹脂からなる円筒体１を有し、該円筒体の内面の動摩擦係数が、０．０７〜０．１５であり、前記円筒体が２５ＭＰａ耐水圧試験において破裂や漏れが発生せず、前記円筒体の２ｍｍ厚試験片当たりの透過率が、１０％以上である、コンクリート圧送管。【選択図】図１
CONCRETE CONVEYING PIPE
To provide a concrete conveying pipe not provided with a metal pipe, the concrete conveying pipe having excellent conveying performance, being light, and excellent in safety.SOLUTION: A concrete conveying pipe 10 not provided with a metal pipe, has a cylindrical body 1 made from a resin, in which a coefficient of dynamic friction on an inner surface of the cylindrical body is 0.07-0.15, the cylindrical body does not cause explosion or leakage in a water pressure resistance test of 25 MPa, and permeability per a specimen having a thickness of 2 mm of the cylindrical body is 10% or more.SELECTED DRAWING: Figure 1
【課題】金属管を有しないコンクリート圧送管であって、優れた圧送性能を有し、軽く、安全性に優れたコンクリート圧送管を提供する。【解決手段】金属管を備えないコンクリート圧送管１０であって、樹脂からなる円筒体１を有し、該円筒体の内面の動摩擦係数が、０．０７〜０．１５であり、前記円筒体が２５ＭＰａ耐水圧試験において破裂や漏れが発生せず、前記円筒体の２ｍｍ厚試験片当たりの透過率が、１０％以上である、コンクリート圧送管。【選択図】図１
CONCRETE CONVEYING PIPE
コンクリート圧送管
SATO KOICHIRO (author) / HARUMI KEIJI (author)
2021-04-22
Patent
Electronic Resource
Japanese