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Home > Publications > International Concrete Abstracts Portal
The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.
Showing 1-5 of 39 Abstracts search results
Document:
SP45-28
Date:
January 1, 1974
Author(s):
Harvey W. Parker
Publication:
Symposium Papers
Volume:
45
Abstract:
A comprehensive field research program is in progress to evaluate practical aspects of the behavior of conventional and experimental shotcretes. The experimental shotcretes are regulated-set shotcrete and steel fiber shotcrete, both of which have been considered promising for several years (Parker, et al 1971). Steel fiber shotcrete contains millions of one ince (25 mm) long steel needle-like fibers which provide improved flexural strength and considerable post-crack resistance.
DOI:
10.14359/17955
SP45-29
Paul J. Tilp
The subject of this summary is: Shotcrete Quality Control and Instrumentation, and the topics in the articles that follow discuss this subject.
10.14359/17956
SP45-30
James P. Crawford
This article features reports on: Hanna Tunnel Rehabilitation; Rexford Tunnel Rehabilitation; Detroit Water Tunnel Repairs; Summary of Shotcrete Tests for Permanent Tunnel Lining in Clay
10.14359/17957
SP45-31
James S. Goff
An economic need necessitated the experimentation and development of a high production nozzle that had a low maintenance factor. With commercial nozzles, as production increased, the maintenance factor accelerated and the nozzle itself proved to be a limiting factor for higher production. The shotcrete was used for rock support in an 18' horseshoe tunnel and was used primarily by itself to make the rock support itself in lieu of using shotcrete with rock bolts or steel sets. All of our equipment is rail-mounded with a sliding floor, and a "California Switch" in each heading.
10.14359/17958
SP45-04
Kirk H. Fox
"Seven years ago, a friend of mine came to me on our tunnel job in the Tehachapi Mountains and in a very low voiced, secretive, manner told me of a substance that would solve all my bad ground problems. He said this was a substance that was easy to mix, simple to apply, and would setup immediately and be as strong as concrete. After seven years of shotcrete experience, if I were to repeat my version of this, I would say that it was difficult to mix properly; the devil to apply; and if you do everything right it will set-up quickly and be as strong as concrete. . .Let us talk about our Tehachapi Tunnels for a few moments, about some of the things that we learned and about some of the mistakes that we made.
10.14359/17931
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