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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.
Title: Strength Evaluation of Early Age Shotcrete
Author(s): L. R. Prudencio, Jr.
Publication: Special Publication
Appears on pages(s): 273-288
Keywords: compressive strength; measuring instruments; mix proportioning; rheological properties; shotcrete; tests; Materials Research L. R. PRUDENCIO, JR
Abstract:The evaluation of early-age strength of shotcrete is very important for some kinds of applications, for example, tunnel linings. However, until now there has been no suitable procedure for this purpose. This paper provides information on a test program carried out to establish an experimental procedure to evaluate the compressive strength of shotcrete at early age (to 8 MPa). Results obtained using the Meynadier needle and the constant energy penetrometer are shown. The first test was employed for very low-strength concrete (less than MPa) and the second covered a higher range (1 to 10 MPa). The influence of mixture proportions on the test results was evaluated.
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