StructuralBig Bad Curves?, Pumping Fiber-Reinforced Wet-Mix Shotcrete
Denis Beaupre and Frederic Chapdelaine
Read MoreMaking good pumpable concrete or wet mix shotcrete is not always easy, especially when fibers are present Adding fibers to ordinary wet-mix shotcrete sometimes re results in nonpalpable or difficult-to-pump concrete. Simply adding superplasticizer 10 fiber-reinforced shotcrete does not always result in a workable mixture.
UndergroundStructuralInternationalSteel Fiber Reinforced Shotcrete Replaces Cast Concrete Lining, World’s Longest Subsea Road Tunnel
Christine J. Hauck and John Peter Holtmon
Read MoreThe Northcape Tunnel in the Artic Circle in Norway was opened for traffic on June 15, 1999. The project is the longest subsea road tunneltunnel (6820 m or22,000 fl) in the world un1il 1999/ 2()0(). TheNorthcapc¢Tunnel is part of 1he FATIMAÂProject, (he road connection from
RepairStructuralShotcrete with Steel Fiber Helps Reinforce Mount St. Helens Project Savings
Alex Keffalas
Read MoreThirteen-hundred feet (400 m) of the peak collapsed or blew outwards. As a result, 24 square miles of the valley was filled by a debris avalanche of recreation.
RepairUndergroundStructuralEvolution of Fiber Reinforced Shotcrete
Dr. Rusty Morgan and R. Here
Read MoreThe concept of reinforcing shotcrete with discrete, disominous steel fibers was developed by the Battelle Research Corporation in the USA in the early 1970s.
RepairArchitecturalStructuralShotcrete Rehabilitation of a Vancouver, BC Historic
R. Heere, D.R. Morgan, N. McAskill, and T. Knowlton
Read MoreA heritage high-rise building in Vancouver, Canada required rehabilitation due to corroÂsion of the steel frame and cracking in the masonry infill. Brick masonry was segmentally removed from the face of this 15-story-high building to expose the steel beam and column framjng system. Steel corrosion
RepairArchitecturalStructuralSeismic Reinforcing of Masonry Walls With Shotcrete
Bill Snow
Read MorePhotos and newsclips showÂing hundreds of collapsed homes buryÂing entire families have become all too commonplace. As residents of North America we are thankful that this sort of calamity doesn’t happen here. The earthÂquakes we’re used to seeing (mainly in California) cause inconvenience and in
StructuralShotcrete Expands Gambling in Colorado
Project Profile
Read MoreThe old mining towns of Central City and Black Hawk, Colorado have enjoyed legalized limjted stakes gambling for the past eight years. Not coincidentally, property values are at their highest levels ever. Commercial developers wanting to get in on the action continue to search for
RepairStructuralBond Strength of Shotcrete Repair
Denis Beaupre
Read MoreA good concrete or shotcrete repair must possess three prime charÂacteristics: 1) the repair material must be durable in an aggressive environment, 2) the repair must be well bonded to the substrate and 3) the repair must be as crack free as possible to efficiently
RepairStructuralRepair of Bridge Elements Using Shotcrete
Steve Gebler
Read MoreThis article presents the essential elements necÂessary for successful remediation of bridge elements. It should be noted that all strucÂtural elements whether f om bridges or other strucÂtures can have certain commonality. However, with bridges, there are certain environmental characterÂistics that enhance the potential for
UndergroundStructuralShotcrete Reinforcement
Dr. Rusty Morgan
Read MoreBefore the 1970s, shotcrete was reinforced either with conventional reinforcing steel welded wire mesh fabric, or in some inÂstances with chain-link mesh or even chicken mesh. In the early 1970s the con-Dr. D.R. (Rusty) cept of steel fiber reinforced shotcrete