Performance of an alkali-activated slag concrete reinforced with steel fibers

This study investigated mechanical and permeability properties at early ages of an alkali-activated slag concrete (AASC) reinforced with steel fibers. The compressive, splitting tensile and flexural strengths, flexural notch sensitivity, pull-out and water absorption properties were evaluated. Test...

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Bibliographic Details
Published in:Construction & building materials 2010-02, Vol.24 (2), p.208-214
Main Authors: Bernal, Susan, De Gutierrez, Ruby, Delvasto, Silvio, Rodriguez, Erich
Format: Article
Language:English
Subjects:
Alkali-activated slag concrete
Alkaline-concrete
Alternative cements
Building materials
Building materials industry
Cement
Construction materials
Early ages toughness
Flexural strength
Mechanical properties
Modulus of rupture in bending
Production processes
Reinforcing steels
Slags
Splitting
Steel fiber reinforced concrete
Steel fibers
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Summary:This study investigated mechanical and permeability properties at early ages of an alkali-activated slag concrete (AASC) reinforced with steel fibers. The compressive, splitting tensile and flexural strengths, flexural notch sensitivity, pull-out and water absorption properties were evaluated. Test results reveal a reduction of AASC compressive strengths with fiber incorporations. However, splitting tensile and flexural strengths were largely improved with increasing fiber volume, varying from 3.75 to 4.64 MPa and from 6.40 to 8.86 MPa at 28 days of curing, respectively. The properties related to durability performance as water absorption, capillarity and water resistance penetration were enhanced with the steel fibers addition. The results show the enormous potential of AASC as building material with and without steel fiber reinforcement.
ISSN:0950-0618
1879-0526
DOI:10.1016/j.conbuildmat.2007.10.027