RESEARCH ON MECHANICAL PROPERTIES AND STRESS-STRAIN RELATIONSHIP OF ECC UNDER COMPRESSION

LI Ke; YU Peng; LIU Weikang; WANG Xinling

doi:10.13204/j.gyjz202003030

Volume 50 Issue 3

Mar. 2020

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LI Ke, YU Peng, LIU Weikang, WANG Xinling. RESEARCH ON MECHANICAL PROPERTIES AND STRESS-STRAIN RELATIONSHIP OF ECC UNDER COMPRESSION[J]. INDUSTRIAL CONSTRUCTION, 2020, 50(3): 172-177. doi: 10.13204/j.gyjz202003030

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RESEARCH ON MECHANICAL PROPERTIES AND STRESS-STRAIN RELATIONSHIP OF ECC UNDER COMPRESSION

doi: 10.13204/j.gyjz202003030

1. School of Civil Engineering, Zhengzhou university, Zhengzhou 450001, China;
2. School of Civil Engineering, Harbin Institute of Technology, Harbin 150001, China

Received Date: 2019-10-20

Abstract

Abstract

Through uniaxial compression tests on five groups of ECC (Engineered Cementitious Composites) prismatic specimens and one group of cement mortar matrix specimens, the effects of PVA (Polyvinyl Alcohol) fiber ratio and water-binder ratio on compressive properties of ECC were studied, as well as the characteristics of complete stress-strain curve of ECC under compression. The test results showed that the impact of PVA fiber volume content on prismatic compressive strength of ECC was not significant. The prismatic compressive strength of ECC increased with the decrease of the water-binder ratio. In addition, the elastic modulus of ECC prisms increased with an increase in compressive strength. Moreover, the PVA fiber volume content and water-binder ratio had little effect on the Poisson's ratio of ECC prisms, and the average value of Poisson's ratio of the ECC prisms was 0.27. Besides, based on the characteristics of complete test stress-strain curves of ECC under compression, the stress-strain relationship model of the ECC under axial compression was proposed, and the accuracy of the model was verified by comparison with the experimental results.
- PVA-ECC,
- uniaxial compression test,
- compressive performance,
- compressive stress-strain relationship,
- water-binder ratio

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References(14)

References

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