Test and Analysis of Expansive Deformation for Shrinkage-Compensating Steel Fiber Reinforced Shotcrete

Abstract:

In order to research the expansive deformation performance of shrinkage-compensating steel fiber reinforced shotcrete, orthogonal test was done in this paper with expansive agent content and steel fiber content as variable. And the test results showed that restrictive expansion ratio was gradually increased when curing in water, while reducing in air. The difference between restrictive expansion ratio and free expansion ratio used to make self stress by stretching steel bar and steel fiber. Meanwhile the maximum self stress is 0.58MPa, and the minimum self stress is 0.23 MPa in concrete. What’s more, both the maximum self stress and the minimum self stress could meet the requirements for self stress of shrinkage-compensating concrete.

• Periodical: Advanced Materials Research (Volumes 287-290)
• Pages: 747-753
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.287-290.747
• Online since: July 2011
• Authors: Wen Hua Yuan, Qin Yong Ma, Peng Bo Cui
• Keywords: Expansive Deformation, Restrictive Expansion Ratio, Self Stress, Shrinkage-Compensating Steel Fiber Reinforced Shotcrete

References

[1] Zhongwei Wu, Hongzhi Zhang: Expansion concrete (China Railway Publishing House, Beijing China 1990 ).

[2] Pengbo Cui, Qinyong Ma: China concrete and cement products Vol. 5(2010), p.45

[3] Technical specification for application of shrinkage-compensating concrete (JGJ/T 178—2009) [S](China Architecture and Building Press, Beijing China 2009).

[4] Shunzeng Zhao, Baokun You: Guidelines for Technical Specification for Application of Shrinkage-compensating Concrete (China Architecture and Building Press, Beijing China 2009).

[5] Huanan He, Chengkui Huang: Journal of Building Materials Vol. 7(2004), p.156