Search | Korea Science

Kim, Seong-Min;Nam, Jeong-Hee
- International Journal of Highway Engineering
- /
- v.7 no.3 s.25
- /
- pp.79-91
- /
- 2005
The temperature patterns in Portland cement concrete (PCC) pavements were measured and comprehensively analyzed from the beginning of the concrete placement based on the temperature measurement technique developed using innovative and inexpensive temperature measurement sensors. The temperature measurements in PCC pavements were taken at several different locations forvarious slab thicknesses. The concrete temperature patterns in the vertical and longitudinal directions of the pavement were analyzed and the effects of the pavement surface reflectivity, shading, and covering on the concrete temperatures were evaluated. The results of this study showed that the significant differences in the maximum concrete temperatures on the placement day were observed according to the concrete placement time. Since the zero-stress temperature is a function of the maximum concrete temperature on the placement day, the placement time would be an important factor that affects the behavior and performance of concrete pavements. The surface conditions of the pavement, such as the surface color, shading, and covering also affected the temperature patterns in PCC pavements significantly.
PDF

최동욱
- Computational Structural Engineering
- /
- v.9 no.4
- /
- pp.27-29
- /
- 1996
콘크리트보강체 접합면의 응력해석에 있어서, 비교적 얇게 타설되는 폴리머콘크리트 합성보의 온도응력해석에는 Chen방법의 적용이 가능하였다. 그러나 같으 해석방법이 콘크리트도로의 응력해석에는 적용될 수 없었는데, 이는 비교적 두껍게 타설되는 포틀랜드시멘트콘크리트의 건조수축을 예측하기 어려웠고 또한 도로수직단면이 균등한 온도변화를 받지 않기 때문이었다. 보강콘크리트도로에서 접합면의 응력집중에 의한 박리현상이 국내에서도 발생할 수 있다는 사실을 고려하여 볼 때 이에 관련된 해석기법이 개발되어야 할 필요가 있다고 사료된다.
PDF