Title: Reduction of Water Inflow by Controlling Cracks in FRC Tunnel Segments

Author(s): Mehdi Bakhshi and Verya Nasri

Publication: Symposium Paper

Volume: 319

Issue:

Appears on pages(s): 6.1-6.16

Keywords: crack width; durability; fiber; flow rate; lining; reinforced concrete; segment; tunnel; water inflow

DOI: 10.14359/51700855

Date: 6/1/2017

Abstract:
Cracking in tunnel lining is a major cause for reduction in serviceability due to water infiltration and exfiltration, and reinforcement corrosion. In order to control water inflow in lined tunnels, design codes and guidelines limit maximum crack width. However, correlation between the allowable crack width and corresponding water inflow in tunnel has not been provided. This paper discusses effects of fiber reinforcement in reduction of flexural crack width, and provides a relationship between crack width and water inflow to verify merits of current crack width criteria for design and construction of concrete tunnel linings. Keywords: