Investigation of microscopic air void structure of anti-freezing asphalt pavement with X-ray CT and MIP
In: Construction and Building Materials, Jg. 178 (2018-07-01), S. 473-483
Online
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Zugriff:
The dissolution of snowmelt agent Mafilon (MFL) causes complicated modifications in the pore structure of anti-freezing asphalt mixtures. In this research, X-ray computed tomography (X-ray CT) and mercury intrusion porosimetry (MIP) were employed to study the effects of salt content, soaking time and freeze-thaw cycle on the pore characteristics. The results indicate that the air void content increases dramatically with the salt content, water bath time and freeze-thaw cycles. The loss of MFL alters gradually from the capillary action to dissolution action. The totality of pores was increased by 35.5% after four freeze-thaw cycles and the increase most concentrated in the mesopores (0.2–0.6 mm). The freeze-thaw action increases the size and number of pores, leading to the accelerated dissolution of MFL, while the modification of pores and dissolution of MFL in turn intensify the freeze-thaw damage.
Titel: |
Investigation of microscopic air void structure of anti-freezing asphalt pavement with X-ray CT and MIP
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Autor/in / Beteiligte Person: | Liu, Song ; Wang, Caoyuan ; Wu, Shuyin ; Yang, Jun ; Yang, Ruochong ; Zhu, Jipeng |
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Zeitschrift: | Construction and Building Materials, Jg. 178 (2018-07-01), S. 473-483 |
Veröffentlichung: | Elsevier BV, 2018 |
Medientyp: | unknown |
ISSN: | 0950-0618 (print) |
DOI: | 10.1016/j.conbuildmat.2018.05.185 |
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