Research on Fracture-CMOD Toughness of Steel Fiber Reinforced Concrete

Abstract:

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In order to study the fracture toughness of steel fiber reinforced concrete (SFRC) and the postcracking toughness evaluation method, the fracture toughness tests were done for the four types of steel fibers and three kinds of matrix strength. According to the experiment curves of the load and the crack mouth opening displacement (Load-CMOD), the fracture toughness of SFRC was studied; the formulas of the postcracking toughness coefficient and the Fracture-CMOD toughness index were established. The experiment results show that the Fracture-CMOD toughness index can reflect sensitively to the effect on concrete toughness of the type of the steel fiber, and then it is avoid that the estimation error of the initial cracking point led to the evaluation error of the toughness.Comparison with other fibers B fiber shows the best crack resistance and the toughening ability.

Info:

Periodical:

Advanced Materials Research (Volumes 168-170)

Edited by:

Lijuan Li

Pages:

1784-1787

DOI:

10.4028/www.scientific.net/AMR.168-170.1784

Citation:

X. W. Wang et al., "Research on Fracture-CMOD Toughness of Steel Fiber Reinforced Concrete", Advanced Materials Research, Vols. 168-170, pp. 1784-1787, 2011

Online since:

December 2010

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Price:

$35.00

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