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Viscosity Characterization of Asphalt Cement
1973There exists an inherent relationship between the commonly used consistency tests (viscosity at 140 F (60 C), viscosity at 275 F (135C), and penetration at 77 F (25 C)) as applied to asphalt cements used in paving. Based on data accumulated from 84 worldwide crude sources of asphalt, it is shown that the viscosity at 140 F is related to each of the ...
LW Corbett, HE Schweyer
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Demulsification process of asphalt emulsion in fresh cement-asphalt emulsion paste
Materials and Structures, 2014The demulsification process of asphalt emulsion in fresh cement asphalt emulsion (CA) paste was investigated by measuring the viscosity and the particle size distribution of CA paste. The morphology evolution of asphalt droplets was also observed by optical microscope. Superplasticizer was used to adjust different demulsifying speed of asphalt emulsion
Jian Ouyang +3 more
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Effect of Emulsified Asphalt on Temperature Susceptibility of Cement Asphalt Mortar
Advanced Materials Research, 2011Cement asphalt mortar (CA mortar, or CAM) is a composite material with equal presence of cement and asphalt emulsion and acts as a cushion layer in the structure of slab track. In the hardened matrix, asphalt accounts for about 30 vol. %, rendering the properties of CA mortar susceptible to temperature variation.
Yun Hua Zhang, Fa Zhou Wang
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Asphalt Cement Characterization by Thermomechanical Analysis
1991Thermomechanical analysis (TMA) techniques were used to characterize 60 original and aged asphalt cements. The objectives were to find better methods to characterize asphalts at low temperatures, to predict low-temperature cracking potentials, and to develop correlations between thermal properties of asphalts and their field performance for ...
D-Y Lee, BV Enustun, S-S Kim
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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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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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Rheological Behavior of Fresh Cement Asphalt Mortar
Sustainable Construction Materials 2012, 2012Cement asphalt mortar (CA mortar) is the key component in the structure of Shinkansen slab track and serves as the elastic shock-absorber. CA mortar is a composite material with cement and asphalt emulsion and acts as a cushion layer in the structure of slab track.
Zhifei Liu, Jinxiang Hong, Jiaping Liu
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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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Physical Properties of Asphalt Cement Binders
1995Description Leading experts in the field present a unique overview of asphalt cement standards, innovative cement testing apparatus, and pavement performance. 12 comprehensive papers explore such issues as: • New Asphalt Testing Apparatus • Applications for Recommended New Cement Standards ...
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Quality and Durability of Rubberized Asphalt Cement and Warm Rubberized Asphalt Cement
2013This thesis discusses and documents findings from an investigation of performance-based testing of asphalt cement (AC), warm mixed asphalt cement, asphalt rubber (AR), and warm asphalt rubber. A number of control, warm, and asphalt rubber binders from Ontario construction contracts were investigated for their compliance with conventional Superpave ...
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