Surface Structuring of Wax in Complex Media
Publication: Journal of Materials in Civil Engineering
Volume 27, Issue 8
Abstract
Investigators over the past 16 years have considered the nature of surface structuring, referred to as bee structures, in bituminous asphalt, commonly identified by atomic force microscopy. Recently it has been suggested that the interaction between nonpolar molecules present in asphalt, including -paraffin waxes, are responsible for these surface microstructures. Several research groups now tend to agree that the interactions between crystallizing -paraffin waxes and the remaining nonwax asphalt molecules are responsible for much of the structuring, including bee-structures. To date, a plausible mechanism to explain the physicochemical manifestation of this type of surface structuring in asphalts has yet to be offered. In this paper a theory is presented that explains the physicochemical nature of surface structuring in asphalts and asphalt fractions based on investigations of simpler material systems reported in the literature pertaining to paraffin and polymer crystallization. Experimental results obtained over the past several years by the writers are presented in support of the theory presented.
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Acknowledgments
The writers gratefully acknowledge the Federal Highway Administration, U. S. DOT, for their financial support, through Contract No. DTFH61-07-D-00005 and DTFH61-07-H-00009.
References
Anderson, D. A., et al. (1994). “Binder characterization and evaluation volume 3: Physical characterization.”, National Research Council, Washington, DC.
Bahia, H. U. (1991). “Low-temperature isothermal physical hardening of asphalt cements.” Ph.D. dissertation-thesis, Civil Engineering Dept., Penn State Univ., University Park, PA.
Bahia, H. U., and Anderson, D. A. (1992). “Physical hardening of paving grade asphalts as related to compositional characteristics.” ACS Div. Fuel Chem. Preprints, 37(3), 1397–1404.
Bassett, D. C., Olley, R. H., and Al Raheil, A. M. (1988). “On isolated lamellae of melt-crystallized polyethylene.” Polymer, 29(9), 1539–1543.
Branthaver, J. F., et al. (1993). “Binder characterization and evaluation volume 2: Chemistry.”, National Research Council, Washington, DC.
Claudy, P., Letoffe, J. M., Rondelez, F., Germanaud, L., King, G. N., and Planche, J. P. (1992). “A new interpretation of time-dependent physical hardening in asphalt based on DSC and optical thermoanalysis.” ACS Div. Fuel Chem. Preprints, 37(3), 1408–1426.
De Moraes, M. B., Pereira, R. B., Simão, R. A., and Leite, L. F. M. (2010). “High temperature AFM study of CAP 30/45 pen grade bitumen.” J. Microsc., 239(1), 46–53.
Dorset, D. L., et al. (1990). “Why do polyethylene crystals have sectors.” Proc. Natl. Acad. Sci. USA, 87(5), 1696–1700.
Dorset, D. L., Alamo, R. G., and Mandelkern, L. (1993). “Surface order and sectorization of polymethylene lamellae.” Macromolecules, 26(12), 3143–3146.
Fazaeli, H., Behbahani, H., Amini, A. A., Rahmani, J., and Yadollahi, G. (2012). “High and low temperature properties of FT-paraffin-modified bitumen.” Adv. Mater. Sci. Eng., 2012, 1–7.
Guenthner, A. J., and Kyu, T. (2000). “Formation of banded textures in liquid crystalline polymers with extended curvature elasticity.” Macromolecules, 33(12), 4463–4471.
Iwata, T., Doi, Y., Isono, K., and Yoshida, Y. (2001). “Morphology and enzymatic degradation of solution-grown single crystals of poly(ethylene succinate).” Macromolecules, 34(21), 7343–7348.
Kringos, N., Schmets, A., Scarpas, A., and Pauli, T. (2011). “Towards an understanding of the self-healing capacity of asphaltic mixtures.” Heron, 56(1/2), 45–74.
Kyu, T., Mehta, R., and Chin, H.-W. (2000). “Spatiotemporal growth of faceted and curved single crystals.” Phys. Rev. E, 61(4), 4161–4170.
Liessmann, G., Schmidt, W., and Reiffarth, S. (1995). “Recommended thermophysical data, data compilation of the saechsische olefinwerke boehlen (Germany, 1995).” 〈http://www.infotherm.com/servlet/infothermSearch〉 (Mar. 18, 2014).
Loeber, L., Sutton, O., Morel, J., Valleton, J.-M., and Muller, G. (1996). “New direct observation of asphalts and asphalt binders by scanning electron microscopy and atomic force microscopy.” J. Microsc., 182(1), 32–39.
Lovinger, A. J., Lotz, B., David, D. D., and Schumacher, M. (1994). “Morphology and thermal properties of fully syndiotactic polypropylene.” Macromolecules, 27(22), 6603–6611.
Mehta, R., Keawwattana, W., Guenthner, A. L., and Kyu, T. (2004a). “Role of curvature elasticity in sectorization and ripple formation during melt crystallization of polymer single crystals.” Phys. Rev. E, 69(6), 061802.
Mehta, R., Keawwattana, W., and Kyu, T. (2004b). “Growth dynamics of isotactic polypropylene single crystals during isothermal crystallization from a miscible polymeric solvent.” J. Chem. Phys., 120(8), 4024–4031.
Ocko, B. M., et al. (2001). “Positional order and thermal expansion of surface crystalline n-alkane monolayers.” Phys. Rev. E, 63(3), 032602.
Ocko, B. M., Wu, X. Z., Sirota, E. B., Sinha, S. K., Gang, O., and Deutsch, M. (1997). “Surface freezing in chain molecules: Normal alkanes.” Phys. Rev. E, 55(3), 3164–3182.
Pauli, A. T., Farrar, M. J., and Harnsberger, P. M. (2012). “Material property testing of asphalt binders related to thermal cracking in a comparative site pavement performance study.” Proc., RILEM Int. Conf. on Cracking in Pavements, Vol. 1, A Scarpas, N. Kringos, I. Al-Qadi and A. Loizos, eds., Springer, Dordrecht, Netherlands, 233–243.
Pauli, A. T., Grimes, R. W., Beemer, A. G., Turner, T. F., and Branthaver, J. F. (2011). “Morphology of asphalts, asphalt fractions and model wax-doped asphalts studied by atomic force microscopy.” Int. J. Pavement Eng., 12(4), 291–309.
Petersen, J. C., et al. (1994). “Binder characterization and evaluation, volume 4: Test methods.”, National Research Council, Washington, DC.
Prasad, S., Hanne, L., and Dhinojwala, A. (2006). “Surface segregation in polymer blends driven by surface freezing.” Macromolecules, 39(22), 7467–7470.
Robertson, R. E., et al. (2001). “Fundamental properties of asphalts and modified asphalts, volume I: Interpretive report.”, Washington, DC.
Schmets, A., Kringos, N., Pauli, T., Redelius, P., and Scarpas, A. (2010). “On the existence of wax induced phase separation in bitumen.” Int. J. Pavement Eng., 11(6), 555–563.
Sloutskin, E., et al. (2003). “Surface freezing in binary mixtures of chain molecules. I. Alkane mixtures.” Phys. Rev. E, 68(3), 031605.
Sloutskin, E., Sirota, E. B., Kraack, H., Ocko, B. M., and Deutsch, M. (2001). “Surface freezing in n-alkane solutions: The relation to bulk phases.” Phys. Rev. E, 64(3), 031708.
Soenen, H., et al. (2013). “Differential scanning calorimetry applied to bitumen: Results of the RILEM NBM TG1 round robin test.” Multi-scale modeling and characterization of infrastructure materials, Vol. 8, RILEM, Bagneux, France, 311–323.
Tsukruk, V. V., and Reneker, D. H. (1995). “Periodic surface instabilities in stressed polymer solids.” Phys Rev. B, 51(9), 6089–6092.
Wu, X. Z., et al. (1993a). “Surface tension measurements of surface freezing in liquid normal alkanes.” Science, 261(5124), 1018–1020.
Wu, X. Z., Sirota, E. B., Sinha, S. K., Ocko, B. M., and Deutsch, M. (1993b). “Surface crystallization of liquid normal-alkanes.” Phys. Rev. Lett., 70(7), 958–961.
Xu, H., Matkar, R., and Kyu, T. (2005). “Phase-field modeling on morphological landscape of isotactic polystyrene single crystals.” Phys. Rev. E, 72(1), 011804.
Zhou, W., et al. (2000). “Crystallization, melting and morphology of syndiotactic polypropylene fractions. 4. In situ lamellar single crystal growth and melting in different sectors.” Macromolecules, 33(18), 6861–6868.
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© 2014 American Society of Civil Engineers.
History
Received: Aug 27, 2013
Accepted: Jan 14, 2014
Published online: Jan 16, 2014
Discussion open until: Sep 3, 2014
Published in print: Aug 1, 2015
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