Development of one-part alkali-activated ceramic/slag binders containing recycled ceramic aggregates |
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Author: | Abdollahnejad, Z.1; Luukkonen, T.1; Mastali, M.1; |
Organizations: |
1Fibre and Particle Engineering, Faculty of Technology, Univ. of Oulu, P.O. Box 4300, 90014 Oulu, Finland |
Format: | article |
Version: | accepted version |
Access: | open |
Online Access: | PDF Full Text (PDF, 1.9 MB) |
Persistent link: | http://urn.fi/urn:nbn:fi-fe2019110737081 |
Language: | English |
Published: |
American Society of Civil Engineers,
2019
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Publish Date: | 2019-11-07 |
Description: |
AbstractAlkali-activated binders have received substantial attention due to their excellent potential in enabling the reuse and recycling of industrial solid wastes and by-products. One-part or just-add-water alkali-activated binders are an approach to reduce the negative aspects of using an alkali solution during the preparation of traditional two-part alkali-activated binders. The work aims to utilize the maximum content of ceramic wastes in alkali-activated blast-furnace slag/ceramic binders. The ground granulated blast-furnace slag was partially replaced [10%, 20%, and 30% in weight (wt.)%] by two types of ceramic wastes (porcelain and raw; i.e., fired and unfired). Moreover, the coarse particle size of porcelain ceramic waste was used as recycled aggregate. The specimens were cured under two different curing regimes: (1) sealing with plastic; and (2) using thermal curing conditions for 3 h in 60°C after demolding and then sealing until the test day. Mechanical testing and microstructural analysis were used to characterize the effects of different curing regimes and different ceramic sources. The results showed that replacing ground granulated blast-furnace slag with all types of ceramic wastes reduced the compressive strength; this reduction was mainly caused by reduction of the calcium content. This strength loss was also governed by the ceramic waste type, curing regime type, and curing duration. The microstructural analysis indicated that some cracks formed between the ceramic waste particles and the matrix. Moreover, the microscopic analysis indicated the use of preheating could eliminate cracking. see all
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Series: |
Journal of materials in civil engineering |
ISSN: | 0899-1561 |
ISSN-E: | 1943-5533 |
ISSN-L: | 0899-1561 |
Volume: | 31 |
Issue: | 2 |
Pages: | 04018386-1 - 04018386-13 |
DOI: | 10.1061/(ASCE)MT.1943-5533.0002608 |
OADOI: | https://oadoi.org/10.1061/(ASCE)MT.1943-5533.0002608 |
Type of Publication: |
A1 Journal article – refereed |
Field of Science: |
116 Chemical sciences 212 Civil and construction engineering 215 Chemical engineering 216 Materials engineering |
Subjects: | |
Funding: |
This study was carried out by the project (GEOBIZ) grant ID: 1105/31/2016 and financially supported by the Finnish Funding Agency for Technology and Innovation (Tekes). |
Copyright information: |
© 2018 American Society of Civil Engineers. This is an Accepted Manuscript of an article published by American Society of Civil Engineers in Journal of materials in civil engineering, available online: https://ascelibrary.org/doi/pdf/10.1061/%28ASCE%29MT.1943-5533.0002608 |