Grouting Slip Liners: The New Inside Story

by Lindsey Lee, (M.ASCE), Technical Adviser; Halliburton Services Division, Halliburton Co., Houston, TX,


Serial Information: Civil Engineering—ASCE, 1990, Vol. 60, Issue 9, Pg. 78-80


Document Type: Feature article

Abstract:

There are approximately 800,000 miles of water and sewer pipelines in the U.S. that need remedial work. About 2% need work each year, usually due to normal or accidental corrosion. Normal corrosion is defined as that occurring of the 30-50 year life of a pipeline. Accidental corrosion could be due to chemical spills, overburden loads, or improper cleaning. Using slip liners with grout is a widely used method of rehabilitation. The proper grout type and viscosity as well as the installation are critical to a successful rehab. Techniques and problems are described for slip liners used in large diameter pipes, those greater than 36 in. inside diameter. Types of grout, mixing procedures, pressure limits and bulkhead design are outlined. Responsibilities of the designer, contractor and pipe supplier are also suggested. There are currently no applicable codes or standards to govern or regulate grouting combined with slip lining pipe, and case history literature is sparse. Where replacement is necessary, many public agencies are switching to plastic pipes instead of rehabilitating existing pipe. Several new types of pipe made of plastic or plastic derivatives are described.

Subject Headings: Plastic pipes | Grouting | Linings | Rehabilitation | Corrosion | Standards and codes | Case studies

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