Extrusion of ECC-Material

An extrusion process especially designed for extrusion of pipes made from fiber reinforced cementitious materials has been developed at Department of Structural Engineering and Materials at the Technical University of Denmark. Engineered Cementitious Composite (ECC) materials have been developed in recent years at Department of Civil and Envirionmental Engineering, University of Michigan. These materials have been developed with the special aim of producing high performance, strain hardening materials with low volume concentrations of short fibers in a cementitious material. ECC material specimens have until now been produced by traditional casting processes. In the present paper results from a recent collaborative research project are documented demonstrating that ECC materials can be extruded in the process referred to above. The paper briefly describes the extrusion process, along with the engineering concepts of ECC materials. Typical mechanical properties of extruded ECC materials are presented, discussed and compared to properties of traditional ECC materials.