Investigation of warm mix epoxy asphalt compaction with gyratory compactor and charge coupled photoelectric imaging

Huang, Qibo; Qian, Zhendong; Yang, Yuming; Zheng, Dezhi

doi:10.1016/j.conbuildmat.2020.121506

Cited by 11 publications

(2 citation statements)

References 31 publications

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“…It has been generally agreed that the optimum viscosity of EA has to be between 2 Pa•s and 3 Pa•s when it comes to the pavement compaction [20,36,79,122]. Viscosity ranging from 100 Pa•s to 200 Pa•s•for epoxy asphalt mastic was recommended for compaction of warm-mixed EAM based on the compactability analysis [126]. erefore, pot life or working life, defined as the length of time for viscosity of EA to increase up to 3 Pa•s [56,68], has been widely used in the EA pavement construction practices since the viscosity of EA has a significant effect on its workability [79].…”

Section: Viscositymentioning

confidence: 99%

Application of Epoxy‐Asphalt Composite in Asphalt Paving Industry: A Review with Emphasis on Physicochemical Properties and Pavement Performances

Chen

Hossiney

Yang

et al. 2021

Advances in Materials Science and Engineering

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One of the failure mechanisms associated with asphalt paving layers, especially on steel deck bridges, is large permanent deformation, which adversely affects its long-term performance in service. Thus, epoxy resin was introduced in asphalt paving industry to tackle permanent deformation of asphalt mixtures due to its thermosetting nature. In this review, epoxy resin as a dominant component of the epoxy-asphalt composite system was first considered, followed by a discussion on its curing methods and curing mechanism. Furthermore, the physicochemical property and mechanical performance of epoxy asphalt and epoxy asphalt mixture were thoroughly examined. Crosslink density of epoxy asphalt dictates its viscosity and thus the allowable construction time. Phase separation and dispersion of asphalt particles in the epoxy matrix was observed for epoxy-asphalt composite, and it showed superior elastic behavior and deformation resistance capability when compared with conventional asphalt materials. Furthermore, epoxy asphalt mixture exhibited significantly higher compressive strength, much better rutting resistance, and superior durability and water resistance properties. However, its low-temperature cracking resistance was slightly compromised.

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Section: Viscositymentioning

confidence: 99%

Application of Epoxy‐Asphalt Composite in Asphalt Paving Industry: A Review with Emphasis on Physicochemical Properties and Pavement Performances

Chen

Hossiney

Yang

et al. 2021

Advances in Materials Science and Engineering

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“…A lot of research has been done on the mechanical properties of asphalt concrete and SBDP [8][9][10][11][12][13]. At present, the research of SBDP mainly focuses on its mechanical properties.…”

Section: Introductionmentioning

confidence: 99%

Dynamic Response of Multitower Suspension Bridge Deck Pavement under Random Vehicle Load

Zhang

Chen

Liu

et al. 2021

Advances in Materials Science and Engineering

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Recently, the multitower suspension bridge has been widely used in long-span bridge construction. However, the dynamic response of the deck and pavement system of the multitower suspension bridge under random vehicle load is still not clear, which is of great significance to steel-bridge deck pavement (SBDP) design and construction. To reveal the mechanical mechanism of the steel-bridge deck pavement of the multitower suspension bridge under traffic load, this paper analyzed the mechanical response of the pavement based on case study through the multiscale numerical approach and experimental program. Firstly, considering the full-bridge effect of the multitower suspension bridge, the finite element model (FEM) of the SBDP composite structure was established to obtain key girder segments. Secondly, the influences of pavement layer, bending moment and torque, random traffic flow, and bridge structure on the stress of the girder segment were analyzed. Thirdly, the mechanical response of the pavement layer to the orthotropic plate under random vehicle load was studied. Finally, a full-scale model of the experimental program was established to verify the numerical results. Results show that (1) the pavement layer reduced the stress of the steel-box girder roof by about 10%. In the case of adverse bending moment and torque, the longitudinal and transverse stresses of the pavement layer were mainly concentrated in the stress concentration area near the suspender. Under the action of the random vehicle flow, the stress response of the pavement layer was increased by 40% compared with that under standard load. (2) Three-tower and two-span bridge structures have a great influence on the vertical deformation of the pavement layer under the action of vehicle load. Thus, the pavement material needs to have great deformation capacity. (3) The full-bridge effect has a significant influence on the longitudinal stress of the local orthotropic plate, but a small influence on the transverse stress. (4) There is a good correlation between the experimental measurement results of the full-size model and that of the numerical model. The research results can provide guidance for SBDP design and construction of the multitower suspension bridge.

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Investigation on segregation characteristics of thermosetting epoxy asphalt mixture during the compaction

Liu

Qian

Yang

et al. 2022

Construction and Building Materials

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Investigation of warm mix epoxy asphalt compaction with gyratory compactor and charge coupled photoelectric imaging

Cited by 11 publications

References 31 publications

Application of Epoxy‐Asphalt Composite in Asphalt Paving Industry: A Review with Emphasis on Physicochemical Properties and Pavement Performances

Application of Epoxy‐Asphalt Composite in Asphalt Paving Industry: A Review with Emphasis on Physicochemical Properties and Pavement Performances

Dynamic Response of Multitower Suspension Bridge Deck Pavement under Random Vehicle Load

Investigation on segregation characteristics of thermosetting epoxy asphalt mixture during the compaction

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