Experimental Study on Strength and AE Characteristics for PFRC with Different Fiber Content

Abstract:

Tests for compressive strength and splitting tensile strength were performed on the concrete reinforced by Polypropylene Fiber of two diameters and of three fiber contents respectively and the whole loading process was monitored by acoustic emission (AE) technique. The test results showed that compressive strengths of Polypropylene Fiber Reinforced Concrete (PFRC) changed slightly with the increasing of fiber content but that splitting strengths changed more. The change rule of splitting strengths with fiber content was related to Fiber diameter which would determine a certain average fiber distance in concrete. There existed a bound value of average fiber distance, which was the most favorable to the splitting strength. Nine AE parameters of specimens received from their splitting tests always showed maximum or minimum at a fiber content of 0.6 kg/m3, which meant that these parameters would be helpful to the further research for the action mechanism of fiber in concrete.

• Periodical: Advanced Materials Research (Volumes 446-449)
• Pages: 297-302
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.446-449.297
• Online since: January 2012
• Authors: Yao Wang, Yan Wang, Wei Hong Xuan, Gang Zheng, Yu Zhi Chen
• Keywords: Acoustic Emission (AE), Compressive Strength, Fiber Content, Fiber Distance, Polypropylene Fiber Reinforced Concrete(PFRC), Splitting Tensile Strength

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