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Effect of asphalt-to-cement ratio on strength of cement asphalt mortar used in high-speed railway
Transport and Communications Science JournalThe ballastless track structure (slab track) structure is commonly used in high-speed railway construction today. For this type of railway structure, the cement asphalt mortar polymer (CAM) layer plays an important role in damping, creating smoothness, reducing noise and ensuring simultaneous operation of the structure.
Lam Nguyen Bao +3 more
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Creep properties of cement and asphalt mortar
Construction and Building Materials, 2014Abstract In order to study the long-term deformation properties of cement and asphalt mortar (CA mortar), the creep properties of CA mortar on different load levels were studied by independently designed creep testing apparatus. The experimental results show that the creep deformation of CA mortar can be divided into the attenuation creep stage in ...
You-jun Xie +4 more
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Performance of cement asphalt mortar with nanomaterials
Advances in Cement Research, 2020Deterioration of the cement asphalt mortar (CAM) cushion in non-ballast slab track can decrease the safety of high-speed railway lines in service. The improvement in the performance of CAM due to the addition of nanosilica was investigated in this study.
Xi Wu, Xing-Lang Fan, Jia-Fei Jiang
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Observation of a network structure in asphalt cements
Proceedings, annual meeting, Electron Microscopy Society of America, 1996Paving asphalts are often judged and selected based on their rheological behavior at prescribed temperatures or aging response. Asphalts are considered as a colloidal mixture, where clusters of polar, aromatic molecules are dispersed in a less polar solvent.
S. J. Rozeveld +3 more
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Viscosity of Asphalt Cements at Intermediate Pressures
Product R&D, 1974A suspended two-piston capillary system for measuring flow of asphalt cements at up to 700 atm is described. The method was used to report the variation in viscosity with pressure on 14 different asphalt cements at 10, 25, and 60 DEG C. The general applicability of the Doolittle exponential relation for the data was demonstrated, and a discussion of ...
H. E. Schweyer, R. W. Lodge
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The influence of water on the oxidation of asphalt cements
Construction and Building Materials, 2014Abstract Two grades of paving asphalt, AC 80-100 and AC 60-70, were studied to determine changes in their physical and chemical properties caused by exposure to water. This experimental study’s primary hypothesis is that the interaction between the water oxygen molecules and asphalt, known as oxidation, changes the asphalt properties, resulting in ...
Jesús Alfredo Hernández Noguera +2 more
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A continuum damage model for asphalt cement and asphalt mastic fatigue
International Journal of Fatigue, 2016Abstract An analytical model is developed for the mechanical degradation of asphalt cement and mastic under repeated loading. The model is derived by applying the strain decomposition principle to consider linear viscoelastic, nonlinear viscoelastic, and damage mechanisms.
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Effects of Additives on the Properties of Asphalt Cement
Journal of Highway and Transportation Research and Development (English Edition), 2007AbstractAsphalt cement is an important part of the asphalt mixture, which is mixed by bitumen, mineral filler and additive, but there are few researches on how can additives improve the properties of asphalt cement effectively. Three kinds of additives are chosen, includes mineral fiber, French PR plast module additives and German duroflex additives ...
Yong-jun Meng, Xiao-ning Zhang
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Effect of Cement on Emulsified Asphalt Mixtures
Journal of Materials Engineering and Performance, 2007Emulsified asphalt mixtures have environmental, economical, and logistical advantages over hot mixtures. However, they have attracted little attention as structural layers due to their inadequate performance and susceptibility to early life damage by rainfall.
Seref Oruc, Fazil Celik, M. Vefa Akpinar
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Workability of Fresh Cement-Asphalt Mastic
Applied Mechanics and Materials, 2013The Cement-Asphalt Mastic (CAM) is combined with emulsified asphalt and cement. It can mix at room temperature manufacturing and construction without heating. This study investigated viscosity, slump, setting time and segregation of fresh Cement-Asphalt Mastic (CAM). These properties help control the quality of Cement-Asphalt Concrete (CAC).
Ming Feng Kuo +3 more
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