CONCRETE FOR TUNNEL LINERS: EVALUATION OF FIBER REINFORCED QUICK SETTING CONCRETE
This study was undertaken to determine the behavior of steel fiber reinforced, quick setting cement concretes and provide information on this material needed for its application in tunnel liners. Strength-time and creep behavior are evaluated for specific mix designs. The creep behavior does not appear to be substantially different than for plain concrete. Interaction diagrams are presented for concretes made with Duracal cement and fiber contents of 0.9, 1.2 and 1.5 percent by volume. Various failure modes were obtained depending on the initial relative eccentricity of load. Tensile stress-strain relationships are analytically obtained from flexural test data. These relationships make possible a post-crack analysis of a fiber reinforced concrete structure. Fiber content, fiber orientation, and type of cement have little effect on Poisson's ratio but do influence the modulus of elasticity and the strength. Durability of these concretes is examined through study of permeability, leaching, volume stability, disturbance of young concrete, effects of high temperature environments and sulfate resistance. Pumping of fibrous concrete is investigated through laboratory testing. The presence of fibrous reinforcement significantly increases the volume of voids making the aggregate gradation and cement paste content critical parameters in designing pumpable mixes.
- This document was prepared for the Federal Railroad Administration, DOT.
University of Illinois, Urbana-ChampaignDepartment of Civil and Environmental Engineering
205 North Mathews Avenue
Urbana, IL USA 61801-2352
- Halvorsen, G T
- Herring, K S
- Keske, W G
- Ounanian, D W
- Spalding, A V
- Kesler, C E
- Publication Date: 1974-8
- Pagination: 104 p.
- TRT Terms: Concrete; Fiber reinforced concrete; Reinforced concrete; Tunnel lining; Tunneling
- Subject Areas: Bridges and other structures; Railroads;
- Accession Number: 00080782
- Record Type: Publication
- Source Agency: Federal Railroad Administration
- Report/Paper Numbers: FRA-ORDD-75-3 Final Rpt.
- Contract Numbers: DOT-FR-30022
- Files: TRIS, USDOT
- Created Date: Feb 27 1975 12:00AM