Orthogonal Test Research on Compressive Strength Size Effect of ECC

Abstract:

Engineered fiber reinforced cementitious composite (ECC) can significantly improve the seismic performance and durability of concrete structures, which has pseudo strain hardening and multiple cracking performances. Through 32 groups of 192 specimens for compressive strength of ECC, the orthogonal test study on the cube compression failure process, and further research on water binder ratio, fiber content by volume, fly ash content and sand binder ratio of 4 kinds of factors on the size effect of ECC cube compressive strength. The test result shows that: PVA fiber content increases, ECC compressive toughness is improved obviously; water binder ratio and fiber content are the main factors which affect the ECC compressive strength and size effect. When water binder ratio decrease, the compressive strength of ECC materials improve and size effect coefficient increase. Fiber content increase, the compressive strength of test block increase and the size effect coefficient increase. Through the bending tests, we know that: the fiber content by volume increases, the ECC flexural strength of the composite increases gradually.

• Periodical: Advanced Materials Research (Volumes 538-541)
• Pages: 1789-1795
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.538-541.1789
• Online since: June 2012
• Authors: Ming Ke Deng, Yun Tao Chang, Xing Wen Liang
• Keywords: Compressive Strength, Orthogonal Test, PVA Fiber Reinforced Cementitious Composite, Size Effect

References

[1] Li V C. Adv Concr Technol, 2003, 1(3):215–230.

[2] Li V C, Wang S, Wu C. ACI Mater J, 2001, 98(6):483–492

[2] Li V C. ACI special publication on concrete:Material Science to Applications,2002, 206(23):373-400.

[4] Li V C, Leung C K Y. Journal of Engineering Mechanics, ASCE, 1992, 188(11):2246-2264

[5] Li V C, ECC-tailored composites through micromechanical modeling[A].Fiber Reinforced Concrete: Present and the Future edited by Banthia et al, CSCE [C], Montreal, 1998, 64–97.

[6] Li V C.Journal of the Chinese Ceramic Socity. 2007,4:1-6. In Chinese

[7] Chengxu Gong, Jun Zhang.SHUILI XUEBAO. 2008, 3: 361-366. In Chinese

[8] Tian Li, Guihong Zhu, Pingxun Guo.Building Science. 2006, 11:47-49. In Chinese

[9] Guihong Zhu, Li Tian, Pingxun Guo.Engineering construction. 2006, 10:7-14. In Chinese

[10] Shilang Xu. Science in China Press. 2009, 5:878-896. In Chinese

[11] Shilang Xu, Xiangrong Cai, Yinghua Zhang.China Civil Engineering Journal.2009, 11:79-85. In Chinese

[12] Li V C，Mishra D K and Wu H C. RILEM J. Materials and Structures, 1995, 28(183):586-595.

[13] Xiangqian Fan, Shaowei Hu, Haitang Zhu.China concrete and cement products.2011, 4:42-45. In Chinese

[14] Yunyan Li, Chuanrong Hu.Experiment design and data processing [M].Chemical Industry Press.2008, 7. In Chinese

[15] Song, G. and G. van Zijl. Tailoring ECC for commercial application [A]. Proceedings of BEFIB[C], Varenna, Lake Como, Italy, 2004, 9, 1391-1400.

[16] Yan Li, Xingwen Liang. Concrete. 2009, 12:54-57.In Chinese