Effect of Fly Ash on the Workability of Nondispersible Underwater Concrete

Ji Shou Niu; Xian Wei Ma

doi:10.4028/www.scientific.net/AMR.194-196.942

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 194-196Effect of Fly Ash on the Workability of...

Effect of Fly Ash on the Workability of Nondispersible Underwater Concrete

Abstract:

Effects of fly ash on the slump, slump loss with time, dispersibility and strength of nondispersible underwater concrete (NDC) were analyzed. The results show that fly ash can increase the fluidity of fresh DNC and reduce the loss of fluidity, but may be disadvantage for improving turbidity, especially fly ash more than certain range. The reinforcement of fly ash takes place at later ages and the amount of fly ash added which has little effect on later strength continues to be increased with ages. The results of field tests also indicate that NDC with 30% fly ash has very small sump loss and good antidispersibility and meets the requirements of compressive strength.

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Periodical:

Advanced Materials Research (Volumes 194-196)

Pages:

942-946

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.194-196.942

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Online since:

February 2011

Authors:

Ji Shou Niu, Xian Wei Ma

Keywords:

Fly Ash (FA), Non-Dispersed Concrete, Workability

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