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Title |
Concrete Pavement Expansion due to Alkali-Aggregate Reaction and Damage Prevention of Bridges
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Authors |
우정원(Jeong-Won Woo) ; 임성순(Sung-Soon Yhim) |
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DOI |
https://doi.org/10.11112/jksmi.2017.21.5.067 |
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Keywords |
알칼리-골재반응 ; 콘크리트 포장 팽창 ; 교대 변위 ; 교량 손상 Alkali-Aggregate Reaction ; Concrete pavement expansion ; Abutment displacement ; Bridge damage |
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Abstract |
The concrete pavement slabs that suffer expansion due to the Alkali-Aggregate Reaction(AAR) increase and the increase consequently causes unexpected displacement of bridge abutment. As the expansion due to the AAR is greater than that due to the temperature change, lethal load can act on bridge abutment. Therefore appropriate preventive measures may be necessary. The degree of expansion by AAR depends on the severity of AAR and geometry condition of concrete pavement and road structure. In order to prevent damage to bridge, it is effective to release the expansion force of the concrete. It would be advantageous to replace the concrete pavement with asphalt for a long section of concrete pavement.
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