Effects of temperature variations on the deflections of airfield jointed plain concrete pavements
This paper aims to study the influences of temperature variations on airfield jointed plain concrete pavement (JPCP) deflections. The maximum deflection at the transverse joint (D0j), the maximum deflection at the corner of a slab (D0c), and the deflection basin at the centre of a slab were consider...
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| Format: | Article |
| Language: | English |
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KeAi Communications Co., Ltd.
2018-09-01
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| Series: | International Journal of Transportation Science and Technology |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S204604301830008X |
| _version_ | 1797763156017152000 |
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| author | Hongduo Zhao Lukuan Ma Jiake Zhang |
| author_facet | Hongduo Zhao Lukuan Ma Jiake Zhang |
| author_sort | Hongduo Zhao |
| collection | DOAJ |
| description | This paper aims to study the influences of temperature variations on airfield jointed plain concrete pavement (JPCP) deflections. The maximum deflection at the transverse joint (D0j), the maximum deflection at the corner of a slab (D0c), and the deflection basin at the centre of a slab were considered. The in-situ deflection measurements at three civil airports were conducted over a 24-hour period and numerical simulations for JPCP at a civil airport were performed as well. The results indicate that the temperature change slightly affects the deflection basin at the centre of a slab unless the positive temperature gradient in the slab increases to exceed a certain critical value. But both D0j and D0c are significantly affected by temperature variations. The results of in-situ tests show that D0j (or D0c) is almost stable from 1 pm and 5 pm in a day. At other times of one day, there is a strong negative liner correlation between D0j (or D0c) and the pavement surface temperature during the heating period and the cooling period, respectively. The results of numerical simulations reveal that both D0j and D0c gradually increase with the increase of the average temperature. The results of numerical simulations also suggest that a critical negative/positive temperature gradient exists at the transverse joint while there is a critical positive temperature gradient at the slab corner. Besides, all the critical temperature gradients are seldom affected by the average temperature. When the temperature gradient exceeds the critical value, D0j, D0c and all values of the deflection basin have a strong positive linear correlation with the temperature gradient. Keywords: Jointed plain concrete pavement, Falling weight deflectometer, Numerical simulations, Temperature variations, Deflections |
| first_indexed | 2024-03-12T19:38:29Z |
| format | Article |
| id | doaj.art-899b7865a7074db182edcc0693b8b730 |
| institution | Directory Open Access Journal |
| issn | 2046-0430 |
| language | English |
| last_indexed | 2024-03-12T19:38:29Z |
| publishDate | 2018-09-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | International Journal of Transportation Science and Technology |
| spelling | doaj.art-899b7865a7074db182edcc0693b8b7302023-08-02T04:01:54ZengKeAi Communications Co., Ltd.International Journal of Transportation Science and Technology2046-04302018-09-0173179188Effects of temperature variations on the deflections of airfield jointed plain concrete pavementsHongduo Zhao0Lukuan Ma1Jiake Zhang2Key Laboratory of Road and Traffic Engineering of the Ministry of Education, Tongji University, Shanghai, ChinaCorresponding author.; Key Laboratory of Road and Traffic Engineering of the Ministry of Education, Tongji University, Shanghai, ChinaKey Laboratory of Road and Traffic Engineering of the Ministry of Education, Tongji University, Shanghai, ChinaThis paper aims to study the influences of temperature variations on airfield jointed plain concrete pavement (JPCP) deflections. The maximum deflection at the transverse joint (D0j), the maximum deflection at the corner of a slab (D0c), and the deflection basin at the centre of a slab were considered. The in-situ deflection measurements at three civil airports were conducted over a 24-hour period and numerical simulations for JPCP at a civil airport were performed as well. The results indicate that the temperature change slightly affects the deflection basin at the centre of a slab unless the positive temperature gradient in the slab increases to exceed a certain critical value. But both D0j and D0c are significantly affected by temperature variations. The results of in-situ tests show that D0j (or D0c) is almost stable from 1 pm and 5 pm in a day. At other times of one day, there is a strong negative liner correlation between D0j (or D0c) and the pavement surface temperature during the heating period and the cooling period, respectively. The results of numerical simulations reveal that both D0j and D0c gradually increase with the increase of the average temperature. The results of numerical simulations also suggest that a critical negative/positive temperature gradient exists at the transverse joint while there is a critical positive temperature gradient at the slab corner. Besides, all the critical temperature gradients are seldom affected by the average temperature. When the temperature gradient exceeds the critical value, D0j, D0c and all values of the deflection basin have a strong positive linear correlation with the temperature gradient. Keywords: Jointed plain concrete pavement, Falling weight deflectometer, Numerical simulations, Temperature variations, Deflectionshttp://www.sciencedirect.com/science/article/pii/S204604301830008X |
| spellingShingle | Hongduo Zhao Lukuan Ma Jiake Zhang Effects of temperature variations on the deflections of airfield jointed plain concrete pavements International Journal of Transportation Science and Technology |
| title | Effects of temperature variations on the deflections of airfield jointed plain concrete pavements |
| title_full | Effects of temperature variations on the deflections of airfield jointed plain concrete pavements |
| title_fullStr | Effects of temperature variations on the deflections of airfield jointed plain concrete pavements |
| title_full_unstemmed | Effects of temperature variations on the deflections of airfield jointed plain concrete pavements |
| title_short | Effects of temperature variations on the deflections of airfield jointed plain concrete pavements |
| title_sort | effects of temperature variations on the deflections of airfield jointed plain concrete pavements |
| url | http://www.sciencedirect.com/science/article/pii/S204604301830008X |
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