A Liquid Cement‐Calcite Pipe‐Coating Process

Abstract

Since 1964, the Philadelphia Water Department has been engaged in research to develop an economical pipe coating process for small diameter mains. This article presents a progress report of a continuing study of the modifications of the basic McCauley process of lining by calcium carbonate precipitation.

Replacement of Water Distribution Mains

“…limited space, and many interferences with other underground utilities, cleaning and mortar lining of mains as small as 6 in. has been found to be more economical than main replacement.P: 14 In less restricted locations, an 8-in. main is commonly found to be as small a size as is economical to clean and line.…”