Experimental Study on Freeze-Thaw Resistance of Concrete with Proto-Machine-Made Sand

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Experiments were conducted to study the effects of source rock state and stone powder on freeze-thaw resistance of concrete with proto-machine-made sand, the strength grade of concrete was C50, the source rock states were gravel and crushed stone, the contents of stone powder in sand were 5%, 9% and 13% respectively. The values of relative dynamic elastic modulus and mass of concrete at different freeze-thaw cycle times were measured, the reduction of relative dynamic elastic modulus and mass loss were calculated to evaluate the freeze-thaw resistance of concrete. The results show that freeze-thaw resistances are controlled by the reduction of relative dynamic elastic modulus of concrete, which are good of concrete with proto-machine-made sand of gravel and crushed stone, and increases with the increasing content of stone powder in sand made of gravel. The reasons leading to difference of freeze-thaw resistance of concrete with sand made of gravel and crushed stone are discussed.

Info:

Periodical:

Edited by:

Dongye Sun, Wen-Pei Sung and Ran Chen

Pages:

4361-4364

DOI:

10.4028/www.scientific.net/AMM.71-78.4361

Citation:

X. Y. Zhang et al., "Experimental Study on Freeze-Thaw Resistance of Concrete with Proto-Machine-Made Sand", Applied Mechanics and Materials, Vols. 71-78, pp. 4361-4364, 2011

Online since:

July 2011

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$35.00

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