Title:
Concrete Pressure Pipe in Sulfate Soils
Author(s):
Robert E. Bald
Publication:
Concrete International
Volume:
10
Issue:
11
Appears on pages(s):
47-51
Keywords:
concrete pipes; prestressed concrete; sulfate resistance; sulfate-resisting cements; sulfate soils; Materials Research
DOI:
Date:
11/1/1988
Abstract:
The usually accepted criteria for use of Type II or Type V cement in sulfate soils are largely based on experience with cast-in-place structures that have exposed evaporative surfaces. The author contends that these criteria are far too conservative for the various types of AWWA concrete pressure pipes. It is suggested that these pipes will withstand attack by sulfates in the surrounding soil when the concrete is made with Type I cement or the mortar coating with Type II and with specified limits on absorption. Examples of long-term installations to support this thesis are cited.