Title:
Preliminary Evaluation of Slurry Waterproofing Materials on FRP Durability
Author(s):
Kiel J. Von Feldt and Charles W. Dolan
Publication:
Symposium Paper
Volume:
275
Issue:
Appears on pages(s):
1-16
Keywords:
CFRP, waterproof, slurry, strength, durability
DOI:
10.14359/51682425
Date:
3/1/2011
Abstract:
This paper examines the pre-application of a waterproofing slurry overlay on the performance of bonded CFRP strengthening systems. Overall, the waterproofed specimens experienced an undesirable bond failure between the adhesive and waterproofing coating and/or concrete substrate and less flexural capacity compared to the control specimen with only the CFRP composite. The control performed at a higher strength and resulted with concrete substrate failure. Due to the influence of moisture during the waterproofing slurry system application, further experimentation was performed to isolate the effect of moisture in the concrete specimens and its effects on the adhesive component as a performance factor. The moisture tests resulted in bond failures and lower strength capacities. The waterproofing application was altered relative to the manufacturer’s recommendations to accommodate an on-site construction protocol. Future research will vary curing time, active waterproofing compound, and on-site construction prior to applying the CFRP composite system to further improve performance.