The In Situ Shear Strength of Roller Compacted Concrete in the Dam of Jinghong Hydropower Station

Abstract:

For roller compacted concrete with the admixtures of grinding limestone powder and water quenched iron slag powder (shortly called double admixture RCC) in dam of Jinghong Hydropower station, the raw materials and the mix proportion of the RCC were studied. Then one experiment on in situ shear strength are carried out between hot rise layer and cold rise layer at the altitude of 573.3 meters of RCC in dam block 23 based on the flat push-situ shear test program. The shear strength indexes of hot rise layer and cold rise layer in RCC for Jinghong Hydropower Station are tested by the experiment subsequently. The study results show that the index for interlayer shear strength of the cold rise layer of RCC with 90 days ages in dam are the friction coefficient of 1.12, and the cohesion of 1.22 MPa. The index for interlayer shear strength of the hot rise layer of RCC with 90 days ages in dam are the friction coefficient of 1.32, and the cohesion of 1.24 MPa. The study results also show that the construction processes meet the requirements of the RCC construction and the integrity of hot rise layer of RCC in the dam is better.

• Periodical: Advanced Materials Research (Volumes 430-432)
• Pages: 968-973
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.430-432.968
• Online since: January 2012
• Authors: Jian Bin Xie, Jing Fan, Tian Chun He, Chun Feng Tang
• Keywords: DAM, In Situ Shear Strength, Index for Interlayer Shear Strength, Roller Compacted Concrete (RCC), Shear Strength

References

[1] Liu Jintang: Water Power, Vol. 32, No. 11 (2006). pp.51-53.

[2] Xie Jianbin, He Tianchun, Ai Yongping, Ji Guojin: Advanced Materials Research, Vol. 255 -260 (2011). pp.3573-3578.

[3] Xie Jianbin, He Tianchun, Fan Jing, Ai Yongping: Applied Mechanics and Materials Vols. 90-93 (2011). pp.2541-2545.

[4] Ji Guojin, Jiang Rongmei, Jiang Futian, in: New Progress on Roller Compacted Concrete dams, edited by Jia Jinsheng, Luis Berga, Zhang Guoxin, Chen Gaixin, Zheng Cuiying, China WaterPower Press (2007).

[5] State Economic and Trade Commission of the People's Republic of China: Test code for hydraulic concrete, DL/T 5150-2001, edited by Nanjing Hydraulic Research institute, China Institute of Water Resources and Hydropower Research, China electric power press (2008).

DOI: 10.29252/jafm.73.245.27848

[6] Liu Sihong: Water science and Engineering, Vol. 2, No. 3 (2009). pp.48-57.