Calcium alumina cement lined pipe
    2.
    发明公开
    Calcium alumina cement lined pipe 失效
    矾土钙铝氧化物 - 赭石

    公开(公告)号:EP0690258A1

    公开(公告)日:1996-01-03

    申请号:EP95304658.8

    申请日:1995-07-03

    IPC分类号: F16L58/06

    摘要: Cast iron pipe (12,15) and other elongated hollow articles are lined with a cementitious mortar for certain applications, such as the transmission of potable water or sewage. To improve the resistance to attack from acids and to provide a crack and holiday free cement lining, a calcium alumina cement (22) is used to line the article. A plasticizer such as fireclay is added to the calcium alumina cement prior to its application. The cement lined article is then coated with an asphaltic based coating (26,28) and then cured in a high humidity environment. An epoxy coating (16,18) may be applied to the bell end (10) and spigot end (14) of the pipe before the application of the cement.

    摘要翻译: 铸铁管(12,15)和其他细长的中空制品内衬有一些水泥砂浆,用于某些应用,例如饮用水或污水的传播。 为了提高抗酸性的抵抗力,并提供裂缝和假期的水泥衬里,使用钙铝氧烷水泥(22)将物品排列。 在其应用之前,将钙增粘剂如耐火粘土添加到氧化钙水泥中。 然后用沥青基涂层(26,28)涂覆水泥衬里制品,然后在高湿度环境中固化。 在施加水泥之前,环氧涂层(16,18)可以施加到管的端部(10)和管端(14)。