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Milling of peat-wood fly ash : effect on water demand of mortar and rheology of cement paste |
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| Author: | Rissanen, Jouni1; Ohenoja, Katja1; Kinnunen, Paivo1; |
| Organizations: |
1Fibre and Particle Engineering, Faculty of Technology, PO Box 4300, 90014, University of Oulu, Finland 2DIEF – Università di Modena e Reggio Emilia, Via Vivarelli 10, 41125 Modena, Italy |
| Format: | article |
| Version: | accepted version |
| Access: | embargoed |
| Persistent link: | http://urn.fi/urn:nbn:fi-fe2019121848818 |
| Language: | English |
| Published: |
Elsevier,
2018
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| Publish Date: | 2020-06-05 |
| Description: |
AbstractThe milling of fluidized bed combustion fly ashes is a promising method to improve ashes’ properties as a cement replacement material. Two fly ashes from the co-combustion of peat and wood, as well as inert sand were milled at varying times. The physical properties of materials, water demand of mortar and rheology of cement paste were studied. At 25% cement replacement rate, the milling decreased the water demand of mortar by 10% and the yield stress of cement paste by 33%. It was found that milling disintegrated irregularly shaped particles, which were the main reason for high water demand of ashes, and tapped density could be used as a simple parameter to estimate the water demand for all studied materials. see all
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| Series: |
Construction & building materials |
| ISSN: | 0950-0618 |
| ISSN-E: | 1879-0526 |
| ISSN-L: | 0950-0618 |
| Volume: | 180 |
| Pages: | 143 - 153 |
| DOI: | 10.1016/j.conbuildmat.2018.05.014 |
| OADOI: | https://oadoi.org/10.1016/j.conbuildmat.2018.05.014 |
| Type of Publication: |
A1 Journal article – refereed |
| Field of Science: |
215 Chemical engineering 216 Materials engineering |
| Subjects: | |
| Funding: |
This work was done under the auspices of the “MINSI” project, which is supported by the European Regional Development Fund (ERDF), and various companies including Fortum Waste Solutions, Pohjolan Voima, Oulun Energia, SSAB, and Stora Enso. |
| Copyright information: |
© 2018 The Authors. Published by Elsevier Inc. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/ |
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https://creativecommons.org/licenses/by-nc-nd/4.0/ |