Curing effects on fracture of high-performance cement based composites with hybrid steel fibers

F. Ozalp*, Y. Akkaya, C. Sengul, B. Akcay, M. A. Tasdemir, A. N. Kocaturk

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

7 Citations (Scopus)

Abstract

In this work, effects of fiber strength and curing conditions on the mechanical behaviour and fracture properties of high performance cement based composites with hybrid steel fibers were investigated. Depending on the high temperature curing conditions, concretes with hybrid steel fibers showed behaviour of enhanced toughness and ductility. Fracture energy of the matrix increased up to 96 times owing to normal strength steel fibers, while in concretes with high strength steel fibers the increase in fracture energy due to steel fibers was 168 times. Petrographic examinations indicated that a connected crack system occurred which was filled with calcium hydroxide at 200°C curing condition and no indication of delayed ettringite formation was observed. Furthermore, the prefabricated elements successfully produced with these materials, such as gully tops and manhole covers used in the city infrastructure, are presented along with selected examples from several applications.

Original languageEnglish
Title of host publicationProceedings of the 6th International Conference on Fracture Mechanics of Concrete and Concrete Structures - High-Performance Concrete, Brick-Masonry and Environmental Aspects
Pages1377-1385
Number of pages9
Publication statusPublished - 2007
Event6th International Conference on Fracture Mechanics of Concrete and Concrete Structures, FraMCoS-6 - , Italy
Duration: 17 Jun 200722 Jun 2007

Publication series

NameProceedings of the 6th International Conference on Fracture Mechanics of Concrete and Concrete Structures
Volume3

Conference

Conference6th International Conference on Fracture Mechanics of Concrete and Concrete Structures, FraMCoS-6
Country/TerritoryItaly
Period17/06/0722/06/07

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