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- Publisher Website: 10.1016/j.conbuildmat.2019.117225
- Scopus: eid_2-s2.0-85073504756
- WOS: WOS:000513297300021
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Article: Effect of novel superabsorbent polymer composites on the fresh and hardened properties of alkali-activated slag
Title | Effect of novel superabsorbent polymer composites on the fresh and hardened properties of alkali-activated slag |
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Authors | |
Keywords | Low-carbon cement Alkali-activated slag Superabsorbent polymer Fresh properties Drying shrinkage |
Issue Date | 2020 |
Publisher | Elsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/conbuildmat |
Citation | Construction and Building Materials, 2020, v. 232, p. article no. 117225 How to Cite? |
Abstract | In this work, the poly(sodium-acrylate acrylamide) superabsorbent polymer (SAP) composites reinforced with micro silica and kaolin clay particles are evaluated as novel additives to control and improve the fresh and hardened properties of alkali-activated slag (AAS). The water swelling and retention capacity of plain and modified SAPs in various solutions pertinent to AAS binder systems (including deionized water, saturated Ca(OH)2, 1.0 M NaOH, 0.5 M Na2CO3, and 0.5 M Na2SO4) are studied using the gravimetric ‘tea bag’ and thermogravimetric methods, together with molecular analysis. The results show that the use of micro silica and kaolin clay-reinforced SAP composites slightly alleviates the negative influence of conventional SAP counterparts on the flowability, setting, and early-age compressive strength of AAS pastes. Nevertheless, the addition of SAP composites merely postpones the early-stage drying shrinkage development but tends to increase the long-term deformation of hardened AAS in unsealed conditions, likely due to the reduced bulk stiffness with enlarged porosity. |
Persistent Identifier | http://hdl.handle.net/10722/293282 |
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 | Fu, C | - |
dc.contributor.author | Ye, H | - |
dc.contributor.author | Lei, A | - |
dc.contributor.author | Yang, G | - |
dc.contributor.author | Wan, P | - |
dc.date.accessioned | 2020-11-23T08:14:28Z | - |
dc.date.available | 2020-11-23T08:14:28Z | - |
dc.date.issued | 2020 | - |
dc.identifier.citation | Construction and Building Materials, 2020, v. 232, p. article no. 117225 | - |
dc.identifier.issn | 0950-0618 | - |
dc.identifier.uri | http://hdl.handle.net/10722/293282 | - |
dc.description.abstract | In this work, the poly(sodium-acrylate acrylamide) superabsorbent polymer (SAP) composites reinforced with micro silica and kaolin clay particles are evaluated as novel additives to control and improve the fresh and hardened properties of alkali-activated slag (AAS). The water swelling and retention capacity of plain and modified SAPs in various solutions pertinent to AAS binder systems (including deionized water, saturated Ca(OH)2, 1.0 M NaOH, 0.5 M Na2CO3, and 0.5 M Na2SO4) are studied using the gravimetric ‘tea bag’ and thermogravimetric methods, together with molecular analysis. The results show that the use of micro silica and kaolin clay-reinforced SAP composites slightly alleviates the negative influence of conventional SAP counterparts on the flowability, setting, and early-age compressive strength of AAS pastes. Nevertheless, the addition of SAP composites merely postpones the early-stage drying shrinkage development but tends to increase the long-term deformation of hardened AAS in unsealed conditions, likely due to the reduced bulk stiffness with enlarged porosity. | - |
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 | Low-carbon cement | - |
dc.subject | Alkali-activated slag | - |
dc.subject | Superabsorbent polymer | - |
dc.subject | Fresh properties | - |
dc.subject | Drying shrinkage | - |
dc.title | Effect of novel superabsorbent polymer composites on the fresh and hardened properties of alkali-activated slag | - |
dc.type | Article | - |
dc.identifier.email | Ye, H: hlye@hku.hk | - |
dc.identifier.authority | Ye, H=rp02379 | - |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1016/j.conbuildmat.2019.117225 | - |
dc.identifier.scopus | eid_2-s2.0-85073504756 | - |
dc.identifier.hkuros | 319214 | - |
dc.identifier.volume | 232 | - |
dc.identifier.spage | article no. 117225 | - |
dc.identifier.epage | article no. 117225 | - |
dc.identifier.isi | WOS:000513297300021 | - |
dc.publisher.place | Netherlands | - |
dc.identifier.issnl | 0950-0618 | - |