Microscopic pore structure of asphalt mixture incorporating with MFL

Abstract

In order to analyze the microstructure of salt anti-freezing asphalt concrete, i e, MFL (Mafilon) modified asphalt concrete, MIP (mercury intrusion porosity) method was used to obtain the data including porosity and pore size distribution in micro scale. Results show that the porosity grows up with the increase of immersion duration and the salt content. During the immersion, the amount of large pores (60–200 μm) grow up gradually and porosity also grows up correspondingly. Even with different immersion duration, most pores’ size distribute is beyond 7000 nm.

Keywords

hot mixture asphalt / salt anti-freezing / porosity / pore size distribution / MIP

References

[1] Liu Q, Erik S, Lvaro G, et al. Induction Heating of Electrically Conductive Porous Asphalt Concrete[J]. Construction and Building Materials, 2010, 24: 1207-1213.

[2] YANG Y, FENG H, ZHANG L.. Design of a Jet Deicing Device for the Winter Service Vehicle[J]. Modern Machinery, 2016, 05: 28-31.

[3] GUAN M, XU Y, LU T, et al. Application of Microwave Heating on Removing Ice on Streets[J]. Journal of Northern Jiaotong University, 2003, 04: 79-83.

[4] Tang Z, Li Z, Hou Z, et al. Influence of Setting of Electrical Conductive Concrete Heating Layer on Effectiveness of Deicing[J]. Journal of Wuhan University of Technology, 2002, 24(2): 45-48.

[5] LI F, WANG Z.. Experiment of Road Performance of Asphalt Mixture with Automatic Long-term Snowmelt Agent[J]. Journal of Highway and Transportation Research and Development, 2012, 03: 7-11.

[6] Sherif Y, Christopher Y T, David F, et al. Conductive Concrete Over Lay for Bridge Deck Deicing: Mixture Proportioning, Optimization, and Properties[J]. ACI Materials Journal, 2000, 97(2): 172-181.

[7] Fu G.. Research on Influence of Snowmelt Agent to Performances of Asphalt and Asphalt Mixture[D]. 2010 Changsha: Changsha University of Science and Technology.

[8] Sun Y.. Study on the Performance of Asphalt Pavement with Snow Melt Salt[D]. 2011 Xi’an: Chang’an University.

[9] Wang K, Nelsen Daniel E, Nixon Wilfrid A. Damaging Effects of Deicing Chemicals on Concrete Materials[J]. Cement & Concrete Composites, 2006, 28(2): 173-188.

[10] Zhang L.. Study on the Durability and Snowmelt Perdurability of Salt Anti-freezing Asphalt Pavement[D]. 2010 Xi’an: Chang’an University.

[11] WANG F, HAN S, ZHANG H, et al. A Study on Application of Salt Anti-freezing Asphalt Mixture[J]. Highway, 2009, 3: 176-179.

[12] Hopstock D M, Zanko L M. Minnesota Taconite as a Microwaveabsorbing Road Aggregate Material for Deicing and Pothole Patching Applications[J]. Northland Transporter, 2004, 3: 3-4.

[13] Di Bella C, Wyrzykowski M, Griffa M, et al. Application of Microstructurally-designed Mortars for Studying Early-age Properties: Microstructure and Mechanical Properties[J]. Cement and Concrete Research, 2015, 78: 234-244.

[14] Kumar R., Bhattacharjee B.. Assessment of Permeation Quality of Concrete Through Mercury Intrusion Porosimetry[J]. Cement and Concrete Research, 2004, 34: 321-328.

[15] Jiang F.. The Study of Micro Pore Characteristics on Different Depth Soft SoilConsolidation by Mercury Intrusion Porosimetry[J]. Science Technology and Engineering, 2011, 31: 7701-7706.

[16] Zhou J., Pan Y., Chen X.. Research Advances in Mercury Porosimetry Study of Pore Structure in Cement-based Materials[J]. Material Review, 2013, 07: 72-75.