01088416

Component

Several relatively newly constructed concrete pavements located in Indiana have experienced deterioration of both longitudinal and transverse joints. The results obtained from the preliminary research suggested that the observed damage of concrete in vicinity of joints was caused by freeze-thaw action. The present study was undertaken in attempt to relate the field conditions (observed extent of joints damage) and laboratory determined (using modified ASTM C 666 method) freeze-thaw resistance to air-void parameters (using ASTM C 457) of concrete extracted from the same pavements. It was concluded that the air content (either total or entrained) is not a reliable indicator of freeze-thaw resistance of neither field nor laboratory concrete. In contrast, other air-void system parameters (void frequency, specific surface and spacing factor) appeared to correlate well with both field and laboratory observations. However, the critical values of void frequency and spacing factor were found to be much more stringent for laboratory than for field exposure conditions. This implies that the accelerated (ASTM C 666-type) freeze-thaw test does not provide a good prediction of the actual field performance.

01084478

08-3029

English

14p

2008

Transportation Research Board 87th Annual Meeting

DVD

Figures; Photos; References (10) ; Tables (1)

Air voids; Asphalt concrete pavements; Concrete; Concrete pavements; Field tests; Freeze thaw durability; Laboratory tests; Resistance tests; Thermal properties; Transverse joints

Highways; Materials; I32: Concrete

Transportation Research Board Annual Meeting 2008 Paper #08-3029

TRIS, TRB

Jan 29 2008 5:31PM