JOURNAL BROWSE
Search
Advanced SearchSearch Tips
Damage of Overlaid Concrete Structures Subjected In Thermally Transient Condition by Rainfall
facebook(new window)  Pirnt(new window) E-mail(new window) Excel Download
 Title & Authors
Damage of Overlaid Concrete Structures Subjected In Thermally Transient Condition by Rainfall
;;
  PDF(new window)
 Abstract
The failure phenomenon of overlaid concrete structures, such as surface crack and peel-off failure in the contact zone, was investigated due to temperature shock(rainfall). To investigate this failure phenomenon, the surface tensile stress, and the shear stress, the vertical tensile stress in the contact zone were analysed using the non-linear stress-strain relationship of material such as strain-hardening- and strain-softening diagrams. Rainfall intensity, overlay thickness and overlay material were the main variables in the analyses. It is assumed that the initial temperature of overlaid concrete structures was heated up to 55 by the solar heat. With a rain temperature 10 and the rainfall intensity of nR=1/a, tR=10min, 60min, the stress states of overlaid concrete structures were calculated. The result shows that only fictitious cracks occurred in the overlay surface and no shear bond failure occurred in the contact zone. The vortical tensile stress increasing with overlay thickness was proved to be the cause of peel-off failure in the contact zone. The formulae for relationship between the vertical tensile stress and overlay thickness, material properties were derived. Using this formulae, it is possible to select proper material and overlay thickness to prevent failure in the contact zone due to temperature shock caused by rainfall.
 Keywords
overlaid concrete structures;temperature shock;non linear stress-strain relationship;strain-softening;peel-off;
 Language
Korean
 Cited by
 References
1.
Conduction of Heat in Solids, 1973.

2.
Uber das Kuhlen von Beton, 1961.

3.
Kunststoff, 1980. vol.70. pp.156-161

4.
Betonwerk+FertigteilTechnik, 1979. pp.753-756

5.
Dissertation EPF Lausanne, 1988.

6.
Dissertation der TU Munchen, 1984.

7.
DAfStb, 1994. pp.267-281

8.
Zement und Beton, 1983. vol.28. pp.19-26

9.
Betonwerk+Fertigteil-Technik, 1973. pp.482-483

10.
Forschung StraBenbau und StraBenverkehrstechnik, 1981.

11.
Adhesion between Polymers and Concrete(ISAP 86), 0000. pp.707-718

12.
Fracture Mechanics of Concrete, 1983. pp.223-249

13.
International Conference on Fracture and Damage of Concrete and Rock, 1988.

14.
RILEM Bulletin, 1996. 30, pp.95-97

15.
Dissertation der RWTH Aachen, 1989. vol.8.

16.
Lexikon der Physik, 1969.

17.
Proceeding of the Korea Concrete Institute, 1998. vol.10. 4, pp.145-151