| Title |
An Evaluation of Epoxy Asphalt Mixtures for Long-Span Steel Bridge Deck |
| Authors |
백유진(Baek, Yu Jin) ; 박창우(Park, Chang Woo) ; 김낙석(Kim, Nakseok) |
| DOI |
https://doi.org/10.12652/Ksce.2012.32.6D.579 |
| Keywords |
장경간 강바닥판 교량;에폭시 아스팔트 혼합물;내구성;공용성;양생 long-span steel bridge decks;epoxy asphalt mixtures;durability;performance;curing |
| Abstract |
The main objective of the research is to evaluate the laboratory performances of epoxy asphalt mixtures for long-span steel bridge decks. The aggregate gradations were recommended for field applications. The laboratory performance test results showed that the durability of epoxy asphalt mixtures was more noticeable than that of conventional ones. The structural analysis was conducted using resilient modulus and bond-shear test results. The analysis results revealed that just 9% out of total bond-shear stress was enough for the entire required bond-shear stress in the pavement system. The tensile stresses in the bridge decks were within limits compared to the laboratory test results from the Nanjing Grand Bridge in China. As a result, the laboratory performances of the epoxy asphalt mixtures for long-span steel bridge decks were better than those of conventional asphalt mixtures. However, the laboratory performance tests of epoxy asphalt mixtures for long-span steel bridge decks should be conducted precisely since the strengths of the mixtures are sensitive to the temperatures and curing times. |