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Volume 18
Issue 14
10.3390/ma18143313
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This is an early access version, the complete PDF, HTML, and XML versions will be available soon.
Article

Experimental Study and Application of TPO Waterproofing Membrane Lapping Process Parameters

by
Keyong Wang
1,
Zhenhua Zang
1,
Jie Li
1,
Zhenyue Shi
1,2,*,
Mingcai Liu
3,
Zhipeng Li
3,
Qingbiao Wang
4,
Yandong Shang
1,
Chenglin Tian
1,
Zifan Jia
1 and
Hui Wang
1
1
School of Resources, Shandong University of Science and Technology, Tai’an 271000, China
2
Laboratory of Rock Burst Prevention Technology and Equipment of Shandong Energy Group Co., Ltd., Ji’nan 250200, China
3
China Railway Construction Investment (Shandong) Dongyang Expressway Co., Ltd., Liaocheng 252299, China
4
Jinan Campus of Shandong Jianzhu University, Ji’nan 250101, China
*
Author to whom correspondence should be addressed.
Materials 2025, 18(14), 3313; https://doi.org/10.3390/ma18143313 (registering DOI)
Submission received: 12 June 2025 / Revised: 7 July 2025 / Accepted: 9 July 2025 / Published: 14 July 2025
(This article belongs to the Special Issue Advances in Material Structural Analysis: Finite Element Analysis and Numerical Modelling)
Versions Notes

Abstract

Taking the TPO waterproofing membrane as an example, this paper studies the influence of temperature, speed and welding pressure on the welding quality of a TPO waterproofing membrane lap area through a peel test and a water impermeability test, determines the optimal construction process, and observes and compares the permeable path through laser confocal microscope. Finally, it is applied to the actual effect test in the project. The results show that the welding pressure test tool for the lap area of the waterproofing membrane is designed to meet the welding work test requirements of various lap areas of the waterproofing membrane. The peel strength increases first and then decreases with the increase in welding temperature, and the optimal construction temperature is 400 °C. The optimal construction speed is 4 m/min; at 400 °C welding temperature, the peel strength increases first and then decreases slightly with the increase in welding pressure. The optimal construction pressure is 14.97 N; under the condition of 0.2 MPa, 30 min to 0.6 MPa, 120 min, the water impermeability test of the overlapping area was qualified. In this paper, the optimal construction technology of a TPO waterproofing membrane is determined, which provides guidance for its application and promotion in engineering.
Keywords: TPO waterproofing membrane; construction technology; peel strength; permeable path; impermeability test TPO waterproofing membrane; construction technology; peel strength; permeable path; impermeability test

Share and Cite

MDPI and ACS Style

Wang, K.; Zang, Z.; Li, J.; Shi, Z.; Liu, M.; Li, Z.; Wang, Q.; Shang, Y.; Tian, C.; Jia, Z.; et al. Experimental Study and Application of TPO Waterproofing Membrane Lapping Process Parameters. Materials 2025, 18, 3313. https://doi.org/10.3390/ma18143313

AMA Style

Wang K, Zang Z, Li J, Shi Z, Liu M, Li Z, Wang Q, Shang Y, Tian C, Jia Z, et al. Experimental Study and Application of TPO Waterproofing Membrane Lapping Process Parameters. Materials. 2025; 18(14):3313. https://doi.org/10.3390/ma18143313

Chicago/Turabian Style

Wang, Keyong, Zhenhua Zang, Jie Li, Zhenyue Shi, Mingcai Liu, Zhipeng Li, Qingbiao Wang, Yandong Shang, Chenglin Tian, Zifan Jia, and et al. 2025. "Experimental Study and Application of TPO Waterproofing Membrane Lapping Process Parameters" Materials 18, no. 14: 3313. https://doi.org/10.3390/ma18143313

APA Style

Wang, K., Zang, Z., Li, J., Shi, Z., Liu, M., Li, Z., Wang, Q., Shang, Y., Tian, C., Jia, Z., & Wang, H. (2025). Experimental Study and Application of TPO Waterproofing Membrane Lapping Process Parameters. Materials, 18(14), 3313. https://doi.org/10.3390/ma18143313

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