Keywords and Phrases
Bridge Deck; Concrete; Condition Assessment; Ground Penetrating Radar GPR; NDT (Non-Destructive Testing); Portable Seismic Property Analyzer (PSPA)
The Montauk Bridge deck was assessed based on the portable seismic property analyzer and ground penetrating radar data. Based on the analysis of the portable seismic property analyzer data, it was determined that over 65% of bridge conditions were rated serious to poor condition with an average compressive strength of less than 2500 psi; less than 35% of bridge deck conditions were rated fair to good with an average compressive strength over 2500 psi. Based on ground penetrating radar data, it was determined that 72% of the bridge deck was in serious to poor condition, and only 28% of the bridge deck was in fair to good condition. Additionally, the analyses of the ground penetrating radar data indicated possible rebar corrosion in places. For these reasons, it is recommended that the Montauk bridge’s deck be completely replaced.
The August A. Busch bridge deck was also assessed using a portable seismic property analyzer and ground penetrating radar tools. Over 90% of the August A. Busch bridge’s deck was in fair to good condition with an average compressive strength of over 2500 psi. Ground penetrating radar data showed no indication of significant deterioration. the overall bridge deck was determined to be in fair to good condition, and it was recommended that the August A. Busch bridge deck be inspected every 24 months.
Based on the ground penetrating radar data, plan-view maps were generated that showed the cross-section of the bridge deck and the placement steel bars, along with the dimensions of the steel bars’ covers.
The positive active mass (PAM) utilization is of great importance, because it limits the theoretical capacity of the battery. Various differentiating graphite additives were incorporated into the positive paste, in a range of amounts, to study and compare their effects on PAM utilization under a wide range of current rates.
The interpretations of the portable seismic property analyzer data correlated well with the interpretations of the ground penetrating radar assessments of both bridges”--Abstract, page iii.
Anderson, Neil L. (Neil Lennart), 1954-
Rogers, J. David
Torgashov, Evgeniy V.
Alagha, Lana Z.
Geosciences and Geological and Petroleum Engineering
Ph. D. in Geological Engineering
Missouri University of Science and Technology
xvii, 125 pages
© 2021 Samie Ramadan A Hamad, All rights reserved.
Dissertation - Open Access
Hamad, Samie Ramadan A, "Use of portable seismic property analyzer and ground penetrating radar to assess bridge decks" (2021). Doctoral Dissertations. 3056.