Comparative mechanical and microstructural properties of high calcium fly ash one-part geopolymers activated with Na2SiO3-anhydrous and NaAlO2
dc.contributor.author | Wan-En, O | |
dc.contributor.author | Yun-Ming, L | |
dc.contributor.author | Cheng-Yong, H | |
dc.contributor.author | Abdullah, MMAB | |
dc.contributor.author | Li, Long-yuan | |
dc.contributor.author | Ho, LN | |
dc.contributor.author | Loong, FK | |
dc.contributor.author | Shee-Ween, O | |
dc.contributor.author | Hui-Teng, N | |
dc.contributor.author | Yong-Sing, N | |
dc.contributor.author | Jaya, NA | |
dc.date.accessioned | 2021-11-11T14:15:57Z | |
dc.date.available | 2021-11-11T14:15:57Z | |
dc.date.issued | 2021-11 | |
dc.identifier.issn | 2238-7854 | |
dc.identifier.issn | 2214-0697 | |
dc.identifier.uri | http://hdl.handle.net/10026.1/18329 | |
dc.description.abstract |
This paper investigates the effect of varying solid alkali activators on the fresh and hardened properties and microstructural changes of one-part geopolymers (OPGs). Single and binary solid alkali activators were used to activate high calcium fly ash. The alkali activators were either solely sodium metasilicate (Na2SiO3) or a combination of sodium aluminate (NaAlO2) and sodium metasilicate (Na2SiO3). The OPG activated with anhydrous Na2SiO3 achieved an excellent 28-day compressive strength of 83.6 MPa while OPG activated with NaAlO2 and Na2SiO3 attained a compressive strength of 45.1 MPa. The Na2SiO3-activated OPG demonstrated better fluidity than the OPG activated with NaAlO2 and Na2SiO3 due to the thixotropic behaviour caused by the NaAlO2. The Na2SiO3-activated OPG consisted of sodium-calcium aluminium silicate hydrate ((N,C)-A-S-H) gel phase, while the OPG activated with NaAlO2 and Na2SiO3 comprised of the coexistence of sodium aluminium silicate hydrate (N-A-S-H) and calcium aluminium silicate hydrate (C-A-S-H) gel phases. Regardless of the distinctive properties, the OPGs are adequate for building materials applications. | |
dc.format.extent | 3850-3866 | |
dc.language | en | |
dc.language.iso | en | |
dc.publisher | Elsevier | |
dc.subject | One-part geopolymer | |
dc.subject | High calcium fly ash | |
dc.subject | Sodium aluminate | |
dc.subject | Anhydrous sodium metasilicate | |
dc.title | Comparative mechanical and microstructural properties of high calcium fly ash one-part geopolymers activated with Na2SiO3-anhydrous and NaAlO2 | |
dc.type | journal-article | |
dc.type | Journal Article | |
plymouth.author-url | https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000712078600002&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=11bb513d99f797142bcfeffcc58ea008 | |
plymouth.volume | 15 | |
plymouth.publication-status | Published | |
plymouth.journal | Journal of Materials Research and Technology | |
dc.identifier.doi | 10.1016/j.jmrt.2021.10.018 | |
plymouth.organisational-group | /Plymouth | |
plymouth.organisational-group | /Plymouth/Faculty of Science and Engineering | |
plymouth.organisational-group | /Plymouth/Faculty of Science and Engineering/School of Engineering, Computing and Mathematics | |
plymouth.organisational-group | /Plymouth/REF 2021 Researchers by UoA | |
plymouth.organisational-group | /Plymouth/REF 2021 Researchers by UoA/UoA12 Engineering | |
plymouth.organisational-group | /Plymouth/Research Groups | |
plymouth.organisational-group | /Plymouth/Research Groups/Marine Institute | |
plymouth.organisational-group | /Plymouth/Users by role | |
plymouth.organisational-group | /Plymouth/Users by role/Academics | |
dcterms.dateAccepted | 2021-10-04 | |
dc.rights.embargodate | 2021-11-12 | |
dc.identifier.eissn | 2214-0697 | |
dc.rights.embargoperiod | Not known | |
rioxxterms.versionofrecord | 10.1016/j.jmrt.2021.10.018 | |
rioxxterms.licenseref.uri | http://www.rioxx.net/licenses/all-rights-reserved | |
rioxxterms.licenseref.startdate | 2021-11 | |
rioxxterms.type | Journal Article/Review |