Strength and Frost-Resistance Properties of the Vibration-Mixed Concrete

doi:10.12068/j.issn.1005-3026.2019.12.021

Abstract

Abstract: The influence of vibration parameters on strength and frost-resistance properties of vibration-mixed concrete was experimentally studied. Firstly， the effects of vibration power， vibration time and mixing numbers were analyzed through orthogonal tests to determine the optimal vibration parameters; then， freeze-thaw tests were conducted on those concrete specimens prepared according to the optimized vibration parameters to analyze the frost-resistance properties. Results show that the vibration power has a more significant effect on the compressive strength of concrete than the mixing numbers and the vibration time. Through vibration-mixing， the 28d compressive strength increase by 24.31% compared with those prepared by static-mixing method. With the increase of freeze-thaw cycles， the mass loss rate and compressive strength loss rate of the vibration-mixed concrete are significantly lower than those of the static-mixed concrete. The concrete compressive strength and the frost-resistance properties can be improved through the vibration-mixing process.

Key words: vibration-mixing, freeze-thaw, mass loss rate, compressive strength, orthogonal test

CLC Number:

TU 528

JIA Peng， DU Gong-cheng， REN Yun-yang， WU Zhen-dong. Strength and Frost-Resistance Properties of the Vibration-Mixed Concrete[J]. Journal of Northeastern University Natural Science, 2019, 40(12): 1784-1789.

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