Effect of MgO Admixture on Stress Characteristics of Concrete Plates Faced on Rockfill Dam during Construction

Zhi Qiang Xie; Qin Chen; Ya Qi Gong; Yong Feng Qi

doi:10.4028/www.scientific.net/AMM.638-640.740

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 638-640Effect of MgO Admixture on Stress Characteristics...

Effect of MgO Admixture on Stress Characteristics of Concrete Plates Faced on Rockfill Dam during Construction

Abstract:

Concrete plate is mainly anti-seepage structure for rockfill dam and essential to avoid dam destruction. Cooling shrinkage will be effectively compensated by mix MgO, as a result, it have been widely used in hydraulic structure. However, with large radiating surface, uniform heat exchange and small bottom restriction, stress characteristic of concrete plates is much different from conventional massive concrete structure. Therefore, impact of MgO on stress characteristic of concrete plates is unclear. In view of this, construction process using MgO concrete and ordinary concrete are simulated based on practical project data. Conclusions indicate that tensile stress of concrete plates in cooling stage can be reduced by adding MgO.

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Periodical:

Applied Mechanics and Materials (Volumes 638-640)

Pages:

740-743

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.638-640.740

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Online since:

September 2014

Authors:

Zhi Qiang Xie*, Qin Chen, Ya Qi Gong, Yong Feng Qi

Keywords:

Concrete, Contact, MgO, Thermal Stress

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