Abstract

The proper assembly of underground precast concrete structures is often critical in the construction of underground structures. In particular, interfacial waterproofing between precast concrete segments is a key factor influencing use, safety, and life span. Current practice is to incorporate waterproofing rubber strips in the design. During the installation process, compressive stress is applied to the strip by post-tensioning to achieve performance. For this paper, lateral constraint compression tests were carried out on composite rubber seal strips that utilize putty. Special waterproofing and sealing test devices were designed to investigate corresponding relationships between water pressure and compressive stress (or strain). A relationship between water resistance pressure and compression stress and strain of the putty-based composite rubber strip was proposed based on the series tests and the control target of the minimum compression strain of the putty composite rubber strip was then suggested. Finally, full-scale waterproofing tests on tunnel joints were conducted. The experimental results provide a scientific reference for the engineering application and design of composite sealing rubber strips putty for underground post-tensioned precast concrete structures.

Details

Title
Experimental Study on Waterproofing Properties of Putty-Based Composite Rubber Strip for Underground Post-Tensioned Precast Concrete Structures
Author
Xiang-guo, Wu 1 ; Xiao-kai, Chen 2 ; Shi-yan, Yu 2 ; Hong, Seongwon 3 ; Kang, Thomas H-K 4 

 Key Lab of Structures Dynamic Behavior and Control of the Ministry of Education and School of Civil Engineering, Harbin Institute of Technology, Harbin, China; Key Lab of Smart Prevention and Mitigation of Civil Engineering Disasters of the Ministry of Industry and Information Technology, Harbin Institute of Technology, Harbin, China 
 Key Lab of Structures Dynamic Behavior and Control of the Ministry of Education and School of Civil Engineering, Harbin Institute of Technology, Harbin, China 
 Department of Safety Engineering, Korea National University of Transportation, Chungju, Chungbuk, South Korea 
 Department of Architecture and Architectural Engineering, Seoul National University, Seoul, South Korea 
Pages
1-12
Publication year
2019
Publication date
Dec 2019
Publisher
Springer Nature B.V.
ISSN
19760485
e-ISSN
22341315
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2171994585
Copyright
International Journal of Concrete Structures and Materials is a copyright of Springer, (2019). All Rights Reserved., © 2019. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.