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- Publisher Website: 10.1016/j.conbuildmat.2018.02.181
- Scopus: eid_2-s2.0-85042694908
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Article: Combined usage of micro-silica and nano-silica in concrete: SP demand, cementing efficiencies and synergistic effect
Title | Combined usage of micro-silica and nano-silica in concrete: SP demand, cementing efficiencies and synergistic effect |
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Authors | |
Keywords | Cementing efficiency Compressive behaviour Micro-silica Nano-silica Superplasticizer |
Issue Date | 2018 |
Publisher | Elsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/conbuildmat |
Citation | Construction and Building Materials, 2018, v. 168, p. 622-632 How to Cite? |
Abstract | It is well known that the addition of micro-silica (MS) can improve the strength and durability of concrete and the addition of nano-silica (NS) can also improve certain properties of concrete. However, systematic research is still needed to exploit the benefits of combined usage of MS and NS, and more specifically, to evaluate their cementing efficiencies and synergistic effect. In this study, an experimental program was launched to investigate the combined effects of MS and NS on the compressive behaviour of concrete. Concrete mixes with varying water/cementitious materials (W/CM) ratio, MS content and NS content but similar workability were produced for testing. It was found that NS has much higher superplasticizer (SP) demand and cementing efficiency than MS. Nevertheless, at the same strength, the SP demand of (MS + NS) is not higher than that of pure cement. More importantly, the combined usage of MS and NS offers certain synergistic effect, as evaluated by a new formula proposed in this study. |
Persistent Identifier | http://hdl.handle.net/10722/263349 |
ISSN | 2023 Impact Factor: 7.4 2023 SCImago Journal Rankings: 1.999 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Li, LG | - |
dc.contributor.author | Zheng, JY | - |
dc.contributor.author | Zhu, J | - |
dc.contributor.author | Kwan, AKH | - |
dc.date.accessioned | 2018-10-22T07:37:31Z | - |
dc.date.available | 2018-10-22T07:37:31Z | - |
dc.date.issued | 2018 | - |
dc.identifier.citation | Construction and Building Materials, 2018, v. 168, p. 622-632 | - |
dc.identifier.issn | 0950-0618 | - |
dc.identifier.uri | http://hdl.handle.net/10722/263349 | - |
dc.description.abstract | It is well known that the addition of micro-silica (MS) can improve the strength and durability of concrete and the addition of nano-silica (NS) can also improve certain properties of concrete. However, systematic research is still needed to exploit the benefits of combined usage of MS and NS, and more specifically, to evaluate their cementing efficiencies and synergistic effect. In this study, an experimental program was launched to investigate the combined effects of MS and NS on the compressive behaviour of concrete. Concrete mixes with varying water/cementitious materials (W/CM) ratio, MS content and NS content but similar workability were produced for testing. It was found that NS has much higher superplasticizer (SP) demand and cementing efficiency than MS. Nevertheless, at the same strength, the SP demand of (MS + NS) is not higher than that of pure cement. More importantly, the combined usage of MS and NS offers certain synergistic effect, as evaluated by a new formula proposed in this study. | - |
dc.language | eng | - |
dc.publisher | Elsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/conbuildmat | - |
dc.relation.ispartof | Construction and Building Materials | - |
dc.subject | Cementing efficiency | - |
dc.subject | Compressive behaviour | - |
dc.subject | Micro-silica | - |
dc.subject | Nano-silica | - |
dc.subject | Superplasticizer | - |
dc.title | Combined usage of micro-silica and nano-silica in concrete: SP demand, cementing efficiencies and synergistic effect | - |
dc.type | Article | - |
dc.identifier.email | Kwan, AKH: khkwan@hkucc.hku.hk | - |
dc.identifier.authority | Kwan, AKH=rp00127 | - |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1016/j.conbuildmat.2018.02.181 | - |
dc.identifier.scopus | eid_2-s2.0-85042694908 | - |
dc.identifier.hkuros | 293787 | - |
dc.identifier.volume | 168 | - |
dc.identifier.spage | 622 | - |
dc.identifier.epage | 632 | - |
dc.identifier.isi | WOS:000430756900056 | - |
dc.publisher.place | Netherlands | - |
dc.identifier.issnl | 0950-0618 | - |