Study of Sleeper Concrete early Strength Based on Orthogonal Experiment

Abstract:

Using orthogonal design method of four factors and three levels, make a mix ratio experiment on sleeper concrete of China's railway sleepers, used steam curing concrete early compressive strength (stripping strength) as evaluation index. Study on different experimental factors of water-cement ratio, sand ratio, fly ash and admixture differently influenced on the early strength of sleeper concrete and analyze the difference impact of each factor and level for the orthogonal experiment. The result shows that the admixture is the main factor for early strength of concrete, followed by fly ash, water-cement ratio and sand ratio. It can provide technical guidance for railway sleeper field and has practical value.

• Periodical: Applied Mechanics and Materials (Volumes 448-453)
• Pages: 1316-1320
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.448-453.1316
• Online since: October 2013
• Authors: Hai Chao Wang, Ke Qiu, Shu Ling Gao
• Keywords: Early Compressive Strength, Influencing Factor, Orthogonal Experiment, Sleeper Concrete

References

[1] Wu Jianhua, Liu Yunlan, Deng Shaozhen．Effect of Forepart Strength of Cured-concrete［J］. JOURNAL OF NINGBO UNIVERSITY(NATURAL SCIENCE & ENGINEERING), 2010 23(4): 112-116.

[2] Xu Youlin. Proposals of Precast Concrete Industry Development [J]. CONCRETE, 2000(4): 27-29.

[3] Liu Baoju, Xie Youjun. Compressive Strength and Durability of Steam-cured Concrete Containing Ultrafine Fly Ash Composite [J]. JOURNAL OF BUILDING MATERIALS, 2003(2): 123-128.

DOI: 10.1016/s0008-8846(01)00559-2

[4] S. Chatterj. i Discussion of the paper "Delayed ettringite form atio: The effect of temperature and basicity on the interaction of sulphate and C-S-H phase0by L. Devit and R Randriam bolona[J]. Cement and Concrete Research, 1998, 28 (12): 1837-1838.

[5] Y. Maltais and J. March and: Influence of curing temperature on cement hydration and mechanical strength development of fly ash mortars, Cement and Concrete Research, 1997, 27(7): 1009-1020.

DOI: 10.1016/s0008-8846(97)00098-7

[6] Caijun Shi and Robert L. Day: Acceleration of the reactivity of fly ash by chemical activation, Cement and Concrete Research, 1995, 25(1): 15-21.

DOI: 10.1016/0008-8846(94)00107-a

[7] Detwiler Rachel J, Kjellsen KnutO, Gjorv Odde. Resistance to chloride intrusion of concrete crued at different temperatures [J]. ACI Materials Journal 1991, 88(1): 19-24.

[8] Liu Baoju, Xie Youjun, Zou Shiqiong, Li Jian, Some factors affecting early compressive strength of steam-curing concrete with ultrafine fly ash, Cement and Concrete Research, 2001, 31(10): 1455-1458.

DOI: 10.1016/s0008-8846(01)00559-2

[9] Fengtai Railway Bridge Works. China Academy of Railway Sciences. Steam curing of concrete [M]. Beijing: CHINA BUILDING INDUSTRY PRESS, (1978).

[10] Chen Kui. Experimental Design and Analysis. Beijing. TSINGHUA UNIVERSITY PRESS, (2005).