期刊
CONSTRUCTION AND BUILDING MATERIALS
卷 22, 期 6, 页码 1178-1182出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.conbuildmat.2007.02.004
关键词
self-compacting concrete; sawdust ash; super-plasticizers; flowable concrete; self-compactability; microstructure
Evaluation of self-compactability of SCC mixes containing SDA as powder material and naphthalene sulphonate (NS) and melamine sulphonate (MS), respectively, shows that optimum workability range for the slump flow test lie between 665 mm and 680 mm, while the V-funnel test is 8.2 s and 8.4 s. These values show that adequate mix stability and self deaeration are achieved. Results of the self-compactability of the SCC mixes using the U- and L-box are within the targets and tolerance values stipulated by EFNAC (2002). These are 28.5 mm/29 min and 0.85/0.85, respectively, for mix containing NS and MS. (C) 2007 Elsevier Ltd. All rights reserved.
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