Long term durability of carbon fiber reinforced polymer (CFRP) systems used to strengthen pre-stressed concrete cylinder pipes (PCCP) and other water transmission structures has been under scrutiny since the CFRP systems were initially implemented for repair of pipelines in 1997. The Metropolitan Water District of Southern California (MWD) studied the effect of water immersion on the long term durability of CFRP samples at the MWD laboratory as a part of their ongoing CFRP research program. The CFRP samples of Tyfo SCH System from Fyfe Co., were prepared at MWD and were submerged in the year of 2000. The tensile testing according to ASTM D 3039 on the aged samples was recently performed to provide long term durability data. The results of this study will assist engineers and pipeline users in determining the applicability of a CFRP system as a long term repair solution.
Tuesday January 19, 2010 9:00am - 9:25am EST
Room 19
