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The influence of polypropylene fibers and aggregate grading on the properties of dry-mix shotcrete

✍ Scribed by Ann Lamontagne; Michel Pigeon

Publisher
Elsevier Science
Year
1995
Tongue
English
Weight
410 KB
Volume
25
Category
Article
ISSN
0008-8846

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✦ Synopsis

This paper presents the results of tests performed to evaluate the influence of the use of polypropylene fibers, of the grading of the fine aggregate, and of the coarse to fine aggregate proportion on various properties of dry-mix shotcrete. These results indicate that the use of polypropylene fibers (2 or 4 kglm 3) does not significantly modify the mechanical strength, the drying shrinkage, and the frost/salt durability of dry-mix shotcrete. An increase in the proportion of coarse aggregate, and an increase of the fineness modulus of the fine aggregate, however, appears to improve the frost/salt durability.

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