C60 High Performance Concrete Prepared from Manufactured Sand with a High Content of Microfines

Abstract:

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The workability, strength and modulus of elasticity, drying shrinkage and creep, and chloride ion permeability as well as freeze-thaw resistance of the C60 high Performance concretes (HPCs) with manufactured sand (MS) containing crushed limestone dust in percents ranging from 3.5% to 14% were experimentally investigated. The results were compared with those of river sand (RS) concrete. In addition, the effect of clay amounts at 3% and 5% in MS on properties of C60 HPCs was also investigated. The results showed that expect for the creep, the other performances of C60 MS-HPCs with crushed limestone dust content of 7% to 10.5% were excellent or compared favorably with those of C60 RS-HPCs. The increment of clay content in MS obviously decreased workability, increased dry shrinkage and accelerated freeze-thaw destruction of C60 MS-HPCs, but didn’t affecting compressive strength and chloride ion permeability of the concrete. It was concluded that C60 HPC can be made with MS with a high content of crushed limestone dust but the amount of clay in MS should be controlled to a low limit.

Info:

Periodical:

Key Engineering Materials (Volumes 405-406)

Edited by:

Hao-Wen YE and Gai-Fei PENG

Pages:

204-211

DOI:

10.4028/www.scientific.net/KEM.405-406.204

Citation:

B. X. Li et al., "C60 High Performance Concrete Prepared from Manufactured Sand with a High Content of Microfines", Key Engineering Materials, Vols. 405-406, pp. 204-211, 2009

Online since:

January 2009

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Price:

$35.00

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