Effect of Chemical Corrosion on Properties of SBS Modified Bitumen for Waterproofing Membranes

Abstract:

SBS modified bitumen membrane used in underground engineering and coastal buildings would be corroded by chemical media, which greatly influenced the service life of waterproofing membranes. In this paper, SBS modified bitumen (MB), SBS modified bitumen with stone powder (MBS) and SBS modified bitumen with talc powder (MBT) were corroded by acidic, alkaline, and saline solutions for different time to evaluated the effect of chemical corrosion on the properties of SBS modified bitumen waterproofing membrane. The mass change ratio, low temperature flexibility, softening point and viscosity of SBS modified bitumen were investigated, and Fourier infrared spectroscopy (FTIR) was used to analyze the chemical structural changes of SBS modified bitumen after corrosion. The results showed that the mass of SBS modified bitumen decreased, the low temperature performance decreased, and the softening point increased after corrosion by chemical solutions. The influence of acidic and saline solution was more serious on SBS modified bitumen with fillers, and the properties of MBS has greatest degradation in acidic solution compared with MB and MBT. In alkaline solution, the properties degradation of MBT and MBS was less than that of MB, which indicated that filler could inhibit the alkaline corrosion of SBS modified bitumen. FTIR showed that C=C decreased more in acidic solution, while C=O and S=O of SBS modified bitumen increased significantly after alkaline solution corrosion, which indicated that acidic solution corrosion easily caused SBS degradation, while alkaline solution corrosion was easy to oxidize SBS and bitumen.

• Periodical: Materials Science Forum (Volume 1035)
• Pages: 958-965
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.1035.958
• Online since: June 2021
• Authors: Jiang Ting Li, Xiao Bin Han, San Peng Mao, Gui Tao Zheng, Jian Ying Yu*
• Keywords: Chemical Corrosion, Chemical Structure, Fillers, Modified Bitumen, Physical Properties, Waterproofing Membranes

References

[1] M. Goncalves, J.G. Lopes, J. de Brito. Mechanical performance of lap joins of flat roof waterpooofing membrans subjected to artificial weathering [J]. Experimental Techniques, 2011, 35(3): 21-28.

DOI: 10.1111/j.1747-1567.2009.00598.x

[2] Q Zhou, Q Xu, et al. Experimental study of waterproof membranes on concrete deck: Interface adhesion under influences of critical factors [J]. Materials & Design, 2009, 30(4):1161-1168.

DOI: 10.1016/j.matdes.2008.06.023

[3] F. Mazzotta, C. Lantieri, V. Vignali, A. Simone, G. Dondi, C. Sangiorgi. Performance evaluation of recycled rubber waterproofing bituminous membranes for concrete bridge decks and other surfaces [J]. Construction and Building Materials, 2017,136:524-532.

DOI: 10.1016/j.conbuildmat.2017.01.058

[4] K. Zielinski, M. Babiak, M. Ratajczak, J. Kosno. Impact of chemical and physical modification on thermoplastic characteristics of bitumen [J]. Modern Building Materials, Structures and Techniques, 2017, 172:1297-1304.

DOI: 10.1016/j.proeng.2017.02.159

[5] H. Zhang, J. Yu, H. Wang, L. Xue. Investigation of microstructures and ultraviolet aging properties of organo-montmorillonite/SBS modified bitumen [J]. Materials Chemistry and Physics, 2011, 129(3): 769-776.

DOI: 10.1016/j.matchemphys.2011.04.078

[6] C. Wei, H. Duan, H. Zhang, Z. Chen. Influence of SBS Modifier on Aging Behaviors of SBS-Modified Asphalt [J]. Journal of Materials in Civil Engineering, 2019, 31(9).

DOI: 10.1061/(asce)mt.1943-5533.0002832

[7] D. Kaya, A. Topal, J. Gupta, T. McNally, Aging effects on the composition and thermal properties of styrene-butadiene-styrene (SBS) modified bitumen [J]. Construction and Building Materials, 2020, 235.

DOI: 10.1016/j.conbuildmat.2019.117450

[8] S Xu, W Dan, et al. Effect of Fillers on Aging Properties of LDHs/SBS modified Asphalt Coating [J].Journal of Wuhan University of Technology, 2013, 35(4): 41-44.

[9] N. Baldino, R. Angelico, P. Caputo, D. Gabriele, C.O. Rossi.Effect of high water salinity on the adhesion properties of model bitumen modified with a smart additive[J]. Construction and Building Materials, 2019, 225: 642-648.

DOI: 10.1016/j.conbuildmat.2019.07.138

[10] P. Chaturabong, H.U. Bahia, et al. Effect of moisture on the cohesion of asphalt mastics and bonding with surface of aggregates [J].Road Materials and Pavement Design, 2018,19(3): 741-753.

DOI: 10.1080/14680629.2016.1267659

[11] L. Pang, X. Zhang, S. Wu, Y. Ye, Y. Li. Influence of Water Solute Exposure on the Chemical Evolution and Rheological Properties of Asphalt [J]. Materials, 2018,11(6).

DOI: 10.3390/ma11060983

[12] K. Zhang, W. Li, F. Han, Performance deterioration mechanism and improvement techniques of asphalt mixture in salty and humid environment [J]. Construction and Building Materials 2019, 208: 749-757.

DOI: 10.1016/j.conbuildmat.2019.03.061

[13] H. Zhang, Z. Chen, G. Xu, C. Shi, Physical, rheological and chemical characterization of aging behaviors of thermochromic asphalt binder [J]. Fuel, 2018,211: 850-858.

DOI: 10.1016/j.fuel.2017.09.111