Exploration of Engineering Design Methods for Cementitious Spray Applied Liner Systems
Publication: Pipelines 2022
ABSTRACT
Over the past decade, cementitious spray applied mortar linings have gained increasing popularity due to their competitive cost structure for large diameter pipe rehabilitation as well as other installation considerations. However, the engineering community, and especially bodies such as ASCE, ASTM, and others, has yet to define a standard design methodology. This paper reviews the increasingly large number of scientific studies that have been conducted to reline existing pipe structures and determine a proper design method. The test data from five different engineering studies is analyzed. The experimental methods of each study are reviewed, and the limitations for each set of data are noted. Straightforward conservative design methodologies are presented and compared to the failure modes for each pipe type based on the material properties of the sprayed liner system and form a consensus on the design method. The results are also compared to a CANDE finite element model.
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Pipelines 2022
Pages: 178 - 187
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Published online: Jul 28, 2022
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