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  • 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.

International Concrete Abstracts Portal

Showing 1-5 of 39 Abstracts search results

Document: 

SP45-20

Date: 

January 1, 1974

Author(s):

Madan M. Singh and Seymour A. Bortz

Publication:

Symposium Papers

Volume:

45

Abstract:

Although the concept of pneumatically applying gunite to a construction face has been in existence since the turn of the century, the use of shotcrete in tunneling has only become one of significance in the last 10 to 15 years. Most of the developments to date have been in Europe, but now the method has started receiving considerable attention in the United States. It has expected that the next major advances will probably be made in this country.

DOI:

10.14359/17947


Document: 

SP45-06

Date: 

January 1, 1974

Author(s):

K.S. Bawa

Publication:

Symposium Papers

Volume:

45

Abstract:

A rail rapid transit system called the "Metro" system has been under construction in the Washington area for the last four years. . .The Metro system will involve nearly all types of construction generally used for rapid transit projects.

DOI:

10.14359/17933


Document: 

SP45-38

Date: 

January 1, 1974

Author(s):

Engineering Foundation

Publication:

Symposium Papers

Volume:

45

Abstract:

The Engineering Foundation Conference on "use of Shotcrete for Underground Structural Support" program schedule on July 16-20, 1973 in South Berwick, Maine.

DOI:

10.14359/17965


Document: 

SP45-13

Date: 

January 1, 1974

Author(s):

H.N. Steenson

Publication:

Symposium Papers

Volume:

45

Abstract:

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. . .

DOI:

10.14359/17940


Document: 

SP45-22

Date: 

January 1, 1974

Author(s):

Leland A. Case

Publication:

Symposium Papers

Volume:

45

Abstract:

The New Melones Projet sucessfully used shotcrete, in conjunction with 10' and 15' rock bolts, as a primary tunnel support method. The New Melones Diversion Tunnel was 3,800 feet long with a horseshoe cross-section nominally 30' wide by 18' to 24' below spring line.

DOI:

10.14359/17949


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