Interlayer strength of hydraulic concrete and layer surface treatment improvementin Wudongde Dam

doi:10.16511/j.cnki.qhdxxb.2017.22.048

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Abstract Concrete pouring layer surfaces are seriously affected by the environment when hydraulic concrete pours in dry, windy environments which affects the interlayer strength. The effect of the concrete interlayer surface is analyzed for various environmental conditions by measuring the interlayer splitting tensile strength and the water content of the first concrete layer. The results show that the interlayer strength is reduced by the environmental conditions with the interlayer strength related to the water content in the first layer. Therefore, the water content can be used to predict interlayer strength. A layer remodeling method is proposed to improve the interlayer strength based on the extreme situation of a water shortage on concrete surface of the first layer surface.

Keywords hydraulic concrete interlayer strength layer remodeling water content

ZTFLH:

TV431

Issue Date: 15 August 2017

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	XU Wenbin
	HU Yu
	LI Qingbin

Cite this article:

XU Wenbin,HU Yu,LI Qingbin. Interlayer strength of hydraulic concrete and layer surface treatment improvementin Wudongde Dam[J]. Journal of Tsinghua University(Science and Technology), 2017, 57(8): 845-850.

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http://jst.tsinghuajournals.com/EN/10.16511/j.cnki.qhdxxb.2017.22.048 OR http://jst.tsinghuajournals.com/EN/Y2017/V57/I8/845

[1]	Kovler K, Roussel N. Properties of fresh and hardened concrete[J]. Cement and Concrete Research, 2011, 41(7):775-792.
[2]	王迎春. 碾压混凝土层面结合特性和质量标准研究[D]. 杭州:浙江大学, 2007.WANG Yingchun. Study on Bonding Characteristics and Quality Standard of Roller Compacted Concrete[D]. Hangzhou:Zhejiang University, 2007.(in Chinese)
[3]	林长农, 金双全, 涂传林. 龙滩有层面碾压混凝土的试验研究[J]. 水力发电学报, 2001, 74(3):117-129.LIN Changnong, JIN Shuangquan, TU Chuanlin. Experiment researches on RCC with layer surfaces for Longtan project[J]. Journal of Hydroelectric Engineering, 2001, 74(3):117-129.(in Chinese)
[4]	姜荣梅, 覃理利, 李家健. 龙滩大坝碾压混凝土层间结合质量识别标准[J]. 水力发电, 2005, 31(4):53-56.JIANG Rongmei, QIN Lili, LI Jiajian. Quality indentifying standard for RCC interlayer properties of Longtan Dam[J]. Water Power, 2005, 31(4):53-56. (in Chinese)
[5]	Bettencourt Ribeiro A C, Diez-Cascon J, Gonçalves A F. Roller compacted concrete-tensile strength of horizontal joints[J]. Materials and Structures, 2001, 34(7):413-417.
[6]	陈媛, 张林, 周坤, 等. 高碾压混凝土拱坝分缝形式及破坏机理研究[J]. 水利学报, 2005, 36(5):519-524.CHEN Yuan, ZHANG Lin, ZHOU Kun, et al. Study on joint types and destructive mechanism of high RCC arch dams[J]. Journal of Hydraulic Engineering, 2005, 36(5):519-524. (in Chinese)
[7]	李鹏辉, 许维, 陈凤岐, 等. 碾压混凝土层面间隔时间宏细观试验研究[J]. 混凝土与水泥制品, 2003, 129(1):12-14.LI Penghui, XU Wei, CHEN Fengqi, et al. Study on macroscopic mesoscopic observation of the interval of roller compacted concrete[J]. China Concrete and Cement Products, 2003, 129(1):12-14. (in Chinese)
[8]	胡建平. 提高碾压混凝土坝层面粘结性能的研究[D]. 武汉:武汉大学, 2004.HU Jianping. Study on Improving Clue Capability of Roller Compacted Concrete[D]. Wuhan:Wuhan University, 2004. (in Chinese)
[9]	中华人民共和国行业标准编写组. DL/T5112-2009水工碾压混凝土施工规范[S]. 北京:中国电力出版社, 2009.The Professional Standards Compilation Group of People's Republic of China. DL/T5112-2009 Hydraulic Roller Compacted Concrete Construction Specification[S]. Beijing:China Electric Power Press, 2009.(in Chinese)
[10]	De Schutter G. Applicability of degree of hydration concept and maturity method for thermo-visco-elastic behaviour of early age concrete[J]. Cement and Concrete Composites, 2004, 26(5):437-443.
[11]	GUAN Junfeng, LI Qingbin, WU Zhimin, et al. Fracture parameters of site-cast dam and sieved concrete[J]. Magazine of Concrete Research, 2016, 68(1):43-54.
[12]	贾金生, 陈改新, 马锋玲, 等. 碾压混凝土坝发展水平和工程实例[M]. 北京:中国水利水电出版社, 2006.JIA Jinsheng, CHEN Gaixin, MA Fengling, et al. RCC Dam Level of Development and Project Examples[M]. Beijing:China Water Power Press, 2006. (in Chinese)
[13]	ZHANG Jieying, Cusson D, Monteiro P, et al. New perspectives on maturity method and approach for high performance concrete applications[J]. Cement and Concrete Research, 2008, 38(12):1438-1446.