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FRACTURE TOUGHNESS OF STEEL FIBER REINFORCED SELF COMPACTING CONCRETE | ||
| Iraqi journal of mechanical and material engineering | ||
| Article 1, Volume 13, Issue 4, 2013, Pages 714-722 | ||
| Author | ||
| Dr. Jabor M. AL-Jeabory | ||
| Abstract | ||
| The paper describes experimental results which have been obtained for Mode I (bending) fracture of steel fiber reinforced of self- compacting concrete and normal vibrating concrete. The mode I tested specimens are 100x100x400 mm prisms with a single notch introduced at the middle of the tension side of the specimen. The fracture toughness KIc results increase with increasing fiber content. The J-integral (integral of Rice) results were nearly constant up to 0.5% of fiber content but, rapidly increase at fiber contents after this percentage which shows that this parameter is more sensitive than fracture toughness to fiber addition. However, the crack mouth opining displacement(CMOD) was independent of the maximum applied load, and sensitive to the fiber inclusion. The enhancement of cracking strength, ultimate strength and fracture toughness for the previous fiber content and orientation are reported. | ||
| Keywords | ||
| Self; Compacting Concrete; normal vibrated concrete; Steel Fiber; stress intensity factor; Integral; crack mouth opening displacement | ||
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