Title:
Evaluation of Impact Behavior of Fiber-Reinforced Concrete
Author(s):
Juan Carlos Vivas and Raúl Zerbino
Publication:
Materials Journal
Volume:
119
Issue:
6
Appears on pages(s):
121-131
Keywords:
ACI Committee 544 impact test; fiber-reinforced concrete (FRC); growing impact loads (GIL) test; impact tests; polymeric fibers; steel fibers
DOI:
10.14359/51737187
Date:
11/1/2022
Abstract:
Impact resistance is an outstanding characteristic of fiber-reinforced concrete (FRC). To evaluate this property, many
methods have been designed. The most widespread test is the one proposed by ACI Committee 544. This test has stood out due to its speed and simplicity; nevertheless, the high dispersion in its results has made it unreliable. Recently, the authors have designed a new method based on the application of growing impact loads (GIL). It is simple, economical, and allows for the evaluation of FRC impact behavior at cracking and after cracking, with most of the resulting parameters expressed in terms of energy. In this paper, results obtained by both methods are compared. Two FRC materials were
evaluated, the first incorporating 30 kg/m3 of steel fiber and the second 5 kg/m3 of a polymeric fiber. Results showed that the parameters from the GIL method were less variable (up to approximately 44%) and had acceptable coefficients of variation (<30%).
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