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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 44 Abstracts search results
Document:
SP54-16
Date:
January 1, 1977
Author(s):
David A. Monaghan, David J. Hoadley, and Grant L. Anderson
Publication:
Symposium Papers
Volume:
54
Abstract:
A raised-shaft lining systems has been developed through a Bureau of Mines contract, "Development of Raise Boring/Shotcrete Support System" (Contract H0252003), awarded to Foster-Miller Associates, Inc. . .This system is specified to operate in raise-bored shafts 9 to 12 feet in diameter, be operated and monitored from the surface, place linings 2 to 6 inches thick, be operable to 1,000 feet deep and place linings at rates of up to 30 feet per hour.
DOI:
10.14359/18029
SP54-09
Todd Rutenbeck
Three years ago at the shotcrete conference in South Berwick, Maine, I discussed the problems of testing shotcrete. . .I will limit my discussion to compressive strength testing of cubes and cores. Before discussing recent Bureau of Reclamation research findings, I will again review the existing problems in shotcrete strength testing.
10.14359/18022
SP54-02
E.E. Mason
Conference opening of Session I: "I was invited to speak here today as we were early users of coarse aggregate shotcrete on this continent. It might be of interest to tell you how be became involved."
10.14359/18015
SP54-17
H.R. Egger
The vehicle in the classical method to spray shotcrete is compressed air. Thereby the aggregate and the cement are transported within a high speed stream of air in the state of a suspension. Many attempts have been exerted to apply other possiblities of transporting the concrete mix. Despite of these numerous efforts there basically remain three varioes methods: 1 dry aggregate suspended in a stream of air 2 slugs of wet mix propelled by compressed air 3 compact wet mix pressed forward mechanically. I will refer to hereafter as method one, two and three.
10.14359/18030
SP54-12
Harvey W. Parker, Gabriel Fernandez-Delgado, and Loren J. Lorig
Some rebound is an inevitable consequence of a shotcrete operation. The many various factors leading to excessive rebound were identified and appreciated by those familiar with shotcrete long ago. Studebaker (1939) was only one of the early researchers. However, the relative significance of many of these factors is not yet well understood. The magnitude of rebound is difficult to determine and "eyeball estimates" cannot always be relied upon to base conclusions about the various factors of rebound.
10.14359/18025
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