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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:
SP45-11
Date:
January 1, 1974
Author(s):
Tor L. Brekke
Publication:
Symposium Papers
Volume:
45
Abstract:
This session met in the evening of Monday, July 16. There were only two invited speakers, both with experience from Scandinavia. This should be kept in mind when studying the comments below as they may not necessarily reflect the practices that prevail in other parts of Europe.
DOI:
10.14359/17938
SP45-12
Ralph W. Coho, Jr.
Design and selection of materials proportions for the production of both dry and wet shotcrete mixtures is a most exacting science. The measurement, blending and mixing of such selected materials is a most exacting art. Shotcreting cannot be accomplished successfully without mutal respect between the practitioners of the science and art of shotcrete production and close adherence to the mix design specification.
10.14359/17939
SP45-13
H.N. Steenson
Shotcrete can be applied by two methods: 1. Dry mix. In this method materials are pre-mixed by manual labor, by a conventional mechanical mixer or by a transit mixer truck. . .2. Wet mix. Until quite recently no equipment on the market has been capable of handling coarse aggregate shotcrete and the new accelerators. In fact shotcreting has been dominated by the dry process over the last few years. . .
10.14359/17940
SP45-14
Fernando E. Valencia
The ultimate test of shotcrete when used as tunnel support or finished lining is how effectively it serves the purpose for which it is used.
10.14359/17941
SP45-15
Robert C. Bates
Health and safety considerations in the use of shotcrete are discussed. The dust conditions, rebound problems, and causticity problems that occur during the shotcreting are discussed along with methods of overcoming them. There are also problems concurrent with shotcrete after it has been in place for a few minutes or several days. These include lack of strength, residual causticity, and improper placement.
10.14359/17942
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