Development and Use of Flowable Calcium Aluminate Mortars in Sewer Environments

A recent trend of using calcium aluminate mortars in the rehabilitation of waste water structures is partly based on its high resistance in this aggressive environment. Additionally, its rapid strength development is of benefit for remediation works where construction is restricted to a short time window, based on cyclic wastewater flow. This paper describes the development and initial testing of a flowable calcium aluminate mortar and discusses its use in the form and pour style structural remediation of a deteriorated trunk sewer structures.