Results 151 to 160 of about 6,113 (204)

The viscoelastic properties of polymer‐modified asphalts

The Canadian Journal of Chemical Engineering, 2000
AbstractThe linear viscoelastic properties of one family of base asphalts, unmodified or modified by the simple addition of an elastomer or by further in‐situ crosslinking, have been investigated. The time‐temperature superposition principle was shown to be valid for the base as well as for the modified asphalts.
Pierre J. Carreau, Mosto Bousmina, Frank Bonniot   +2 more
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Modifying Complex Additive for Asphalt Binder

Chemistry and Technology of Fuels and Oils, 2016
© 2016 Springer Science+Business Media New York.The effect of modifying complex additives on the physicochemical properties of asphalt is studied. It is shown that complex additives based on cellulose fibers with surfactants adsorbed on their surfaces possess a cross-linking effect and improve the heat and frost resistance of the asphalt binder and its
Galimullin I., Bashkirtseva N., Mukhamatdinov I.   +2 more
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Memory functions in polymer modified asphalts

Journal of Applied Polymer Science, 2007
AbstractThe viscoelastic nonlinear behavior of several base and polymer modified asphalts (PMA) has been studied in step‐strain experiments. The polymers were poly(styrene‐b‐butadiene‐b‐styrene), poly(styrene‐b‐ethylene‐co‐butylene‐b‐styrene), poly(ethylene‐r‐vinylacetate) copolymers, and a linear low density poly(ethylene), which were chosen as ...
POLACCO, GIOVANNI, J. STASTNA, P. MICHALICA, D. BIONDI, M. CANTU', L. ZANZOTTO   +5 more
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Temporary networks in polymer‐modified asphalts

Polymer Engineering & Science, 2004
Abstract The viscosity functions of several polymer‐modified asphalts (PMAs) were studied at different temperatures in steady‐state rate sweep tests. The materials were obtained by mixing different base asphalts with either styrene‐butadiene‐styrene (SBS), ethylene‐vinylacetate (EVA) or reactive ethylene terpolymers (RET).
POLACCO, GIOVANNI, J. STASTNA, Z. VLACHOVICOVA, D. BIONDI, AND L. ZANZOTTO   +4 more
openaire   +2 more sources

Viscosity function in polymer-modified asphalts

Journal of Colloid and Interface Science, 2003
Asphalt is a multidisperse micellar system with rheological behavior resembling that of a low-molecular-weight polymer. Nowadays, asphalt is frequently modified by blending it with various polymers. Such modified asphalt has rheological properties that differ from the properties of the base asphalt.
J, Stastna, L, Zanzotto, O J, Vacin
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Composite Asphalt Binders: Effect of Modified RPE on Asphalt

Journal of Materials in Civil Engineering, 2000
This study prepared and characterized recycled polyethylene (RPE) modified asphalts. The RPE was modified with different copolymers before incorporating into the asphalt. A special morphology was found for this system. The RPE particles are highly swollen by asphalt. This morphology is attributed to physical interactions.
A. A. Yousefi, A. Ait-Kadi, C. Roy
openaire   +1 more source

Outdoor aging of road asphalt and SBS modified asphalt

Frontiers of Chemical Science and Engineering, 2010
The process of performance degradation of road asphalt (RA) is regarded as aging. At present, better understanding of the thermal-oxidative aging of asphalt is achieved and the corresponding method to evaluate this process is developed; meanwhile, photo-oxidative aging (aging in an atmospheric environment, which is referred to as “outdoor aging” in ...
Li Xiang, Juan Tu, Jian Cheng, Guohe Que
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Rheology of asphalts modified with glycidylmethacrylate functionalized polymers

Journal of Colloid and Interface Science, 2004
Asphalt is known to be a colloidal suspension in which asphaltenes are covered by a stabilizing phase of polar resins and form complex micelles that are dispersed in the oily maltenic phase. In order to enhance its mechanical properties (e.g., in road paving), asphalts are often loaded with polymeric materials, thereby obtaining blends that can have ...
POLACCO, GIOVANNI, J. STASTNA, D. BIONDI, F. ANTONELLI, Z. VLACHOVICOVA, AND L. ZANZOTTO   +5 more
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Benzoxazine-modified asphalts

The use of polymers for modification of asphalt is an attempt to prolong the service life and improve the performance of asphalt particularly for road pavement applications. This research aims to study mechanical and thermal properties of asphalt modification by bisphenol A based benzoxazine resin.
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Effect of asphalt modified with polyethylene fiber on asphaltic characteristics

2021
ÖZET Artan traffic hacmi ve buna bağlı olarak artan dingil yükleri, lastik basınçları ve ticari taşıt sayısı yollarda deformasyonlara sebep olmakta ve bu deformasyonlara önleyebilmek için yeni çözüm arayışlarına gidilmelidir. Modifiye bağlayıcılar ve katkılı bitümler kullanmak bu sorunlara getirilen çözümlerden birisidir.
openaire   +1 more source