Influence of Shrinkage Reduce Agent on Early Age Autogenous Shrinkage of Concrete

Abstract:

Based on designed and manufactured test equipment of concrete early age shrinkage, the influence of shrinkage reduce agent (SRA) on early age autogenous shrinkage of concrete was researched. The test results show that early age autogenous shrinkage of concrete was reduced with SRA added and the shrinkage-reducing ratio increased with concrete strength grade heightened. SRA could also greatly reduce early age autogenous shrinkage of concrete added with pulverized ly ash or slag. Superplasticizer would increse early age autogenous shrinkage of concrete, and the shrinkage was larger than those without superplasticizer, even the SRA mixed into. Furthermore, early age curing should be enhanced for concrete with superplasticizer.

• Periodical: Key Engineering Materials (Volumes 302-303)
• Pages: 211-217
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.302-303.211
• Online since: January 2006
• Authors: Xiao Qian Qian, Tao Meng, Shu Lin Zhan, Min Hui Fang, Kuang Liang Qian
• Keywords: Concrete, Early Age Autogenous Shrinkage, Pulverized Fly Ash, Pulverized Slag, Shrinkage Reducer Agent

References

[1] Long Guangchen: Autogenous Shrinkage of Cement-based Materials with Low Water Binder Ratio, China Concrete and Cement Products, 2000, No. 4, pp.3-5.

[2] Yang Quanbing: Study on the Self-desiccation of High Performance Concrete Stored in Water for Two Years, Journal of Building Materials, 1998, No. 3, pp.215-221.

[3] H.E. Davis: Autogenous Volume Change of Concrete, Proceeding of the 43th Annual American Society for Testing Materials, 1940, pp.1103-1113.

[4] Qian Xiaoqian, Zhan Shulin, Fang Minghui: Study and Application on Shrinkage-reducing Agent of High Performance Concrete, New Building Materials, 2003, No. 7, pp.42-45.

[5] A. Radocea: Autogenous Volume Change of Concrete at Very Early Age, Magazine of Concrete Research, 1998, No. 2, pp.107-109.

DOI: 10.1680/macr.1998.50.2.107

[6] S. Lepage, M. Balbaki, E. Dallaire: Early Shrinkage Development in the High Performance Concrete, Cement, Concrete, and Aggregates, 1999, No. 2, pp.31-35.

DOI: 10.1520/cca10505j

[7] E. Tazawa, S. Miyazawa: Experimental Study on Mechanism of Autogenous Shrinkage of Concrete, Cem. Concr. Res. 25 (8) (1995) 1633-1638.

DOI: 10.1016/0008-8846(95)00159-x

[8] E. Tazawa, S. Miyazawa: Influence of Cement and Admixture on Autogenous Shrinkage of Cement Paste, Cem. Concr. Res. 25 (2) (1995) 281-287.

DOI: 10.1016/0008-8846(95)00010-0

[9] An Mingzhe, Qin Weizu, Zhu Jinquan: Experimental Study on Autogenous Shrinkage of High- Strength Concrete, Journal of Shandong Institute, 1998, No. 12, pp.139-143.

[10] Ba Hengjing, Gao Xiaojian, Yang Yingzi: Research on Measuring Means of Autogenous Shrinkage of High Performance Concrete at Early Age, Industrial Construction, 2003, No. 8, pp.1-4.

[11] Li Jiahe, Ou Jinping, Sun Wenbo: Effect of Mineral Admixture on Autogenous Shrinkage of High Performance Concrete at Early Age, Concrete, 2002, No. 5, pp.9-11.

[12] Li Yue, Wu Keru, et al.: Effect of Additives on the Autogenous Shrinkage of Cement Paste, Journal of Building Materials, 2001, No. 1, pp.7-12.