A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Moisture is a primary contributing factor in the long term durability of bridge decks. Moisture measurement techniques were examined and one of the methods, Peltier-type psychrometers, was used to measure bridge deck moisture. Measurements were made at depths of 0.5, 1.5, 3.0 and 4.5 - 5.5 in. Both negative and positive moment regions were instrumented. The degree of saturation at the level of the reinforcing steel was found to be about 90 percent, with little variation over the two month period that measurements were taken. Moisture content fluctuations were greater in the negative moment region than the positive moment region, probably due to a higher degree of tensile cracking in the negative moment region. Moisture fluctuations could lead to increased migration of chloride ions to the reinforcing steel. Measurement of moisture content distributions before and after wetting a bridge deck could be used as an indicator of corrosion protection provided by overlays.
Moisture is a primary contributing factor in the long term durability of bridge decks. Moisture measurement techniques were examined and one of the methods, Peltier-type psychrometers, was used to measure bridge deck moisture. Measurements were made at depths of 0.5, 1.5, 3.0 and 4.5 - 5.5 in. Both negative and positive moment regions were instrumented. The degree of saturation at the level of the reinforcing steel was found to be about 90 percent, with little variation over the two month period that measurements were taken. Moisture content fluctuations were greater in the negative moment region than the positive moment region, probably due to a higher degree of tensile cracking in the negative moment region. Moisture fluctuations could lead to increased migration of chloride ions to the reinforcing steel. Measurement of moisture content distributions before and after wetting a bridge deck could be used as an indicator of corrosion protection provided by overlays.
Bridge Deck Moisture Measurement
D. J. Janssen (author)
1987
19 pages
Report
No indication
English
Construction method of bridge deck slab, bridge deck slab and bridge
| European Patent Office | 2022
CONSTRUCTION METHOD OF BRIDGE DECK SLAB ASSEMBLY FOR BRIDGE DECK SLAB AND BRIDGE DECK SLAB
| European Patent Office | 2018