Uniaxial Tensile Experiment on PVA Fiber Reinforced Cementitious Composites

Abstract:

Engineered cementitious composite (ECC) is a representative of the new generation of high performance fiber reinforced cementitious composites. To reveal the influence of mineral admixtures on the tensile mechanical characteristics of polyvinyl alcohol fiber reinforced engineered cementitious composites (PVA-ECC), the tensile properties of PVA-ECC with replacing cement by a significant amount of fly ash (FA), silica fume (SF) and metakaolin (MK) was experimentally investigated. Uniaxial tensile experiment was carried out using rectangular thin plate with sizes of 400×100×15mm³. Results from uniaxial tensile tests show that these mineral admixtures can improve the properties of PVA-ECC. The composite can achieve an ultimate strain of 2.0%, as well as an ultimate strength of 4.0MPa, with a moderate fiber volume fraction of 2.0%. In addition, the composites with FA, SF and MK show saturated multiple cracking characteristics with crack width at ultimate strain limited to below 175μm.

• Periodical: Applied Mechanics and Materials (Volumes 438-439)
• Pages: 270-274
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.438-439.270
• Online since: October 2013
• Authors: Hai Long Wang, Guang Yu Peng, Yue Jing Luo, Xiao Yan Sun
• Keywords: Fiber Reinforced Cementitious Composite, Polyvinyl Alcohol Fiber, Tensile Strain Capacity, Uniaxial Tension

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