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A Research on the Behavior of a Polyurethane Polymer Waterproof Material Used in Bridge Geotechnical Applications

Yuzhuo Wang1,2, Zhichao Xu2,*
1 School of Agriculture and Hydraulic Engineering, Suihua University, Suihua, 152061, China
2 Institute of Cold Regions Science and Engineering, Northeast Forestry University, Harbin, 150040, China
* Corresponding Author: Zhichao Xu. Email:
(This article belongs to this Special Issue: Advanced Materials, Processing and Testing Technology)

Fluid Dynamics & Materials Processing 2022, 18(4), 897-906.

Received 26 August 2021; Accepted 23 November 2021; Issue published 06 April 2022


Polyurethane is enjoying a widespread use as a polymer-based waterproof material in civil engineering In the present study we consider a temperature-sensitive waterproof and moisture-permeable polyurethane material (PTPE-PU) characterized by one or more phase transition temperatures (critical temperatures). Near the critical temperature, the waterproof and moisture permeability of polyurethane undergo abrupt changes. The related stability, thermal performance, water resistance, hydrostatic pressure, and moisture permeability are investigated here considering a PTPE-PU traditionally used in bridge geotechnical engineering. The results show that the moisture permeability of the coated bridge rock and soil undergo sudden variations near the crystallization and melting temperature of the soft segment. The moisture permeability is 3000 g/(m2d). The hydrostatic pressure of the coated bridge rock and soil is 3.5 kPa.


Polyurethane polymer; waterproof material; temperature-sensitive type; bridge foundation

Cite This Article

Wang, Y., Xu, Z. (2022). A Research on the Behavior of a Polyurethane Polymer Waterproof Material Used in Bridge Geotechnical Applications. FDMP-Fluid Dynamics & Materials Processing, 18(4), 897–906.

This work is licensed under a Creative Commons Attribution 4.0 International License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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