Please use this identifier to cite or link to this item:
https://doi.org/10.1680/macr.2011.63.8.583
DC Field | Value | |
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dc.title | Effect of w/c ratio on air-void system of foamed concrete and their influence on mechanical properties | |
dc.contributor.author | Wee, T.-H. | |
dc.contributor.author | Daneti, S.B. | |
dc.contributor.author | Tamilselvan, T. | |
dc.date.accessioned | 2014-06-17T05:29:44Z | |
dc.date.available | 2014-06-17T05:29:44Z | |
dc.date.issued | 2011-08-01 | |
dc.identifier.citation | Wee, T.-H., Daneti, S.B., Tamilselvan, T. (2011-08-01). Effect of w/c ratio on air-void system of foamed concrete and their influence on mechanical properties. Magazine of Concrete Research 63 (8) : 583-595. ScholarBank@NUS Repository. https://doi.org/10.1680/macr.2011.63.8.583 | |
dc.identifier.issn | 00249831 | |
dc.identifier.uri | http://scholarbank.nus.edu.sg/handle/10635/59026 | |
dc.description.abstract | A study was undertaken to investigate the effect of water to cementitious material (w/c) ratio (ranging from 0.22 to 0.60) on the air-void system (air content ranging from about 10 to 70%) of foamed concrete, and their effects on the mechanical properties of foamed concrete without sand. The cementitious material used in this study was blended cement with 50% ordinary Portland cement (OPC) and 50% ground granulated blastfurnace slag (ggbs) by weight. The linear traverse method was used to characterise the air-void system, referring to air content, average air-void size, air-void frequency and spacing factor. The results show that although the same quality of foam was introduced, the air-void size and frequency, and hence spacing factor, of the foamed concrete varied with different w/c ratios and air contents, which in turn affected the mechanical properties of the concrete. For the different w/c ratios and air contents adopted, it was found that an air-void system with a spacing factor of about 0.05 mm, air-void size of 0.15 mm and air content of 40% was optimal in terms of achieving a high strength to weight ratio. The compressive strength of foamed concrete seems to be influenced by the spacing factor, w/c ratio and air content in relation to density. The results also indicated that the inclusion of air-voids in foamed concrete had a greater effect on compressive strength than the modulus of elasticity and it increases with increase of w/c ratio. The results of a numerical analysis concurred with the experimental observations. Thomas Telford Ltd © 2011. | |
dc.description.uri | http://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1680/macr.2011.63.8.583 | |
dc.source | Scopus | |
dc.type | Article | |
dc.contributor.department | CIVIL & ENVIRONMENTAL ENGINEERING | |
dc.description.doi | 10.1680/macr.2011.63.8.583 | |
dc.description.sourcetitle | Magazine of Concrete Research | |
dc.description.volume | 63 | |
dc.description.issue | 8 | |
dc.description.page | 583-595 | |
dc.description.coden | MCORA | |
dc.identifier.isiut | 000294548800004 | |
Appears in Collections: | Staff Publications |
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