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Copyright of Journal of Dalian University of Technology / Dalian Ligong Daxue Xuebao is the property of Journal of Dalian University of Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Dalian University of Technology / Dalian Ligong Daxue Xuebao is the property of Journal of Dalian University of Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Dalian University of Technology / Dalian Ligong Daxue Xuebao is the property of Journal of Dalian University of Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Aiming at the serious problem of asphalt leakage in OGFC, three different types of OGFC were prepared and their basic performances have compared and analyzed. This paper systematically studies the effect of fiber type and dosage on the asphalt leakage of OGFC. Furthermore, the road performance of OGFC has further analyzed, combined with high temperature rut test and water stability test. Finally, we optimized the type and amount of fiber that had better effect on OGFC performance, which laid a solid foundation for the promotion and application of OGFC. The results show that adding fiber to OGFC can effectively improve the adhesion, high temperature performance, and moisture susceptibility. The amount of fiber should have controlled between 0.3%-0.5%. Among the different fiber OGFC, the OGFC-5 asphalt mixture mixed with polypropylene fiber has the best road performance, followed by cellulose fiber and polyester fiber. Considering the improvement of basic performance and road performance of OGFC, we recommend polypropylene fiber. [ABSTRACT FROM AUTHOR]

Aiming at the problem of large number of the weathered granite existed along the expressway, and to recycle the excavation and meet the social and economic benefits, this paper attempts to improve the properties of weathered granite material which is easy to disintegrate and poorly graded. The lime-fly-ash- cement was used to improve the weathered granite material for the pavement sub-base. Three different mix proportion, the mass ratio of cement: lime: fly-ash: weathered granite is; I (2:4: 16: 78), II (2: 6: 14: 78), IE (2: 8: 12: 78) were tested; And four tests of compaction, strength, dry shrinkage and temperature shrinkage were taken to evaluate the effect of road base course performance of lime-fly-ash-cement stabilized weathered granite material. The tests result shows that the strength decreases first and then keeps stable with the increasing of lime, and keeps stable first and then increases with the increasing of fly-ash. The plan I and II have bigger maximum dry density, the compressive strength and spilt strength of plan I are the biggest, those of plan II are the second. The drying shrinkage of plan I and II is similar, and that of plan III is the worst. The rule of temperature shrinkage is the same to the drying shrinkage rule. According to the experimental result, the best mix proportion scheme is mix proportion I (2:4: 16: 78), which is suitable to the pavement sub-base. [ABSTRACT FROM AUTHOR]

In an effort to study sustainable environmentally friendly pavement, the physical mechanics and road performance of warm-mix asphalt mixtures based on an emulsifying platform were studied via the Marshall design method. The results show that the optimum asphalt content of warm-mix asphalt mixtures is generally higher than that of hot-mix asphalt mixtures by 0.1% to 0.2 %; the values of the stability, bulk specific gravity, air voids, and voids in mineral aggregate do not change significantly; and the number of voids filled with asphalt and the flow value increase a little. The residual stability value of warm-mix asphalt mixtures increases, whereas the freeze-thaw splitting strength decreases. The high-temperature performance and seepage performance of warm-mix asphalt mixtures are similar to those of hot-mix asphalt mixtures. [ABSTRACT FROM AUTHOR]