Variation of Temperature Stress for Concrete in Industrial Intelligent Steam Curing Environment
DOI: 10.23977/ieim.2022.051102 | Downloads: 10 | Views: 444
Author(s)
Wu Mengshan 1, Yang Xiaoyan 2,3, Qiu Songli 3
Affiliation(s)
1 School of Civil Engineering, Chongqing Jiaotong University, Chongqing, 315000, China
2 School of Civil Engineering & Architecture, Ningbo Tech University, Ningbo, Zhejiang, 315000, China
3 Ningbo Communication Engineering Construction Group Co., Ltd., Ningbo, Zhejiang, 315000, China
Corresponding Author
Yang XiaoyanABSTRACT
There is a large temperature difference between inside and surface of concrete components for its own hydration degree in the environment of industrial intelligent steam curing. It has a certain negative impact on the quality of concrete. In this paper, the temperature variation and hydration degree of 30m prefabricated T-beams in the whole process are analyzed by field tests. On this basis, industrial production process parameters such as temperature, humidity and curing time are optimized. Theoretical temperature field and stress distribution law which conform to industrial intelligent steam curing production process are proposed by temperature-structure coupling method. The results show that the industrial intelligent steam curing production process includes three stages of heating, constant temperature and cooling. The first curing chamber of concrete is heated to 50℃ with 10℃/h, and then enters the next curing chamber after 5h. The second curing chamber keeps temperature of 50℃ and 0.5h, then cools to 30℃ with 10℃/h, and stops steam input, 2.5h natural cools to end steam. The local stresses concentration for the T-beam and diaphragm are generated with steam curing 10h. The maximum principal tensile stress of diaphragm reaches maximum by sharp drop of ambient temperature with curing 10h.
KEYWORDS
Industrialized production, Prefabricated t-beam, Steam curing chamber, Temperature field, Temperature stressCITE THIS PAPER
Wu Mengshan, Yang Xiaoyan, Qiu Songli, Variation of Temperature Stress for Concrete in Industrial Intelligent Steam Curing Environment. Industrial Engineering and Innovation Management (2022) Vol. 5: 6-13. DOI: http://dx.doi.org/10.23977/ieim.2022.051102.
REFERENCES
[1] GONZALEZ C A, ETXEBERRIA M, SUN P C. Influence of steam curing on the pore structures and mechanical properties of fly-ash high pe rformance concrete prepared with recycled aggregates[J]. Cement and Concrete Composites, no.71, pp.77-84, 2016.
[2] Mehmet Gesoğlu, Erhan Güneyisi, Barham Ali, Kasım Mermerdaş. Strength and transport properties of steam cured and water cured lightweight aggregate concretes [J]. Construction and Building Materials, no.49, pp.417-424, 2013.
[3] Jiang P, Jiang L, Zha J, et al. Influence of temperature history on chloride diffusion in high volume fly ash concrete [J]. Construction and Building Materials, vol.144, no.30, pp.677-685, 2017.
[4] Ba M F, Qian C X, Guo X J, et al. Effects of steam curing on strength and porous structure of concrete with low water/binder ratio[J]. Construction and Building Materials, vol.25, no.1, pp.123-128, 2011.
[5] He T S, Xie B. Effect of Microdosage Phosphate on Enhanced of the Strength of Steam-Curing Concrete [J]. Bulletin of the Chinese Ceramic Society, vol.36, no.3, pp.1030-1034, 2017.
[6] Xing Liu. Test Method Standard for Mechanical Properties of Ordinary Concrete GB/T50081-2002. Beijing, China Academy of Building Research, 2007.
[7] Zhu B F. Temperature stress and temperature control of mass concrete [M]. China Electric Power Press, 1999.
[8] Zhu B F. Compound exponential formula for variation of thermal and mechanical properties with age of concrete [J]. Journal of Hydraulic Engineering, vol.42, no.1, pp.1-7, 2011.
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