Effect of Material Properties on Plastic Shrinkage of Ultra-Fine Sand Pumping Concrete

Abstract:

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The influence of mixing fly ash, admixture(including pumping agent, water reducing agent, air-entraining agent), polypropylene fiber on plastic shrinkage of ultra-fine sand pumping concrete by using slab test in this paper. The results show that mixing fly ash can significantly reduce plastic crack area of ultra-fine sand pumping concrete, and plastic crack area begins to reduce slowly when the content of fly ash is up to 20%; When the content of water reducing agent is between 0% and 1.5%, inhibition effects of water reducing agent on plastic shrinkage of ultra-fine sand pumping concrete increase gradually with the content., and the optimum content of water reducing agent is 0.75%; Compared with the water reducer, the effect of mixing pumping agent or air-entraining agent is better; Mixing polypropylene fiber can reduce plastic crack area of ultra-fine sand pumping concrete, slenderizing the crack, and the effect becomes greater with the content of polypropylene fiber.

Info:

Periodical:

Advanced Materials Research (Volumes 150-151)

Edited by:

Jinglong Bu, Zhengyi Jiang and Sihai Jiao

Pages:

588-593

DOI:

10.4028/www.scientific.net/AMR.150-151.588

Citation:

Y. Y. Zhang et al., "Effect of Material Properties on Plastic Shrinkage of Ultra-Fine Sand Pumping Concrete", Advanced Materials Research, Vols. 150-151, pp. 588-593, 2011

Online since:

October 2010

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Price:

$35.00

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