Experimental Investigation into the Impact of Polypropylene Fibers and SRA on the Early Crack Resistance of Concrete

Abstract:

Early shrinkage of concrete includes plastic shrinkage before the final setting, drying shrinkage during hardening process and autogenous shrinkage. Concrete drying shrinkage which is caused by evaporation is a major factor for the concrete volume change. By ring constrained test and free shrinkage TONCEN test, this paper studies the impact of polypropylene fibers and SRA on the shrinkage properties of concrete at the early age. The test shows that the polypropylene fibers and SRA can significantly reduce the early shrinkage of concrete, and SRA works more evidently than polypropylene fibers.

• Periodical: Advanced Materials Research (Volumes 194-196)
• Pages: 858-864
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.194-196.858
• Online since: February 2011
• Authors: Xian Song Xie, Fang Tian, Yi Hong Hong
• Keywords: Crack Resistance of Concrete, Polypropylene (PP) Fiber, SRA, TONCEN Test

References

[1] Naiqian Feng. High-performance Concrete Structures [M]. Beijing: Mechanical Industry Press, 2004, In Chinese.

[2] Yilun Zhang et. al. New Building Materials. 2006 (1), In Chinese.

[3] Yingfei Wang. Journal Of The Chinese Ceramic Society. 2006 (6), In Chinese.

[4] Yan Yao, Liyuan Ma et. al. Influential Factors of Early Shrinkage Cracking of High Strength Concrete. Reinforced Concrete Structural Cracks Control Guide [M], Chemical Industry Press, 2006, In Chinese.

[5] GBJ82-85. General Long-term Performance and Durability of Concrete Experimental Method, [S], In Chinese.

[6] Guoxing Huang ＆Rongyin Hui. The Concrete Shrinkage[M]. Beijing: China Railway Press, 1990, In Chinese.