| Author: | Chen, Liang |
| Title: | Mechanical performance and microstructure of binary cement under flow-through CO₂ curing |
| Advisors: | Tsang, C. W. Daniel (CEE) |
| Degree: | M.Sc. |
| Year: | 2017 |
| Subject: | Hong Kong Polytechnic University -- Dissertations Portland cement Cement -- Testing |
| Department: | Faculty of Construction and Environment |
| Pages: | 79 pages : color illustrations |
| Language: | English |
| Abstract: | In this study, 50% of the Portland cement (PC) was replaced with reactive MgO cement (MOC) and a flow-through CO₂ curing method at ambient pressure was adopted to cure the MOC-PC binary pastes. Different CO₂ curing regimes influences on the carbonation degree and compressive strength of the binary cement were studied, including CO₂ concentration, curing time and relative humidity. CO₂ uptake, the formation of carbonation products and compressive strength of blocks were investigated. Results revealed that (1) OPC-MOC binary cement showed a weaker compressive strength compared to OPC samples. (2) CO₂ curing significantly improved the compressive strength of the OPC-MOC binary cement. (3) 50% relative humidity was the most appropriate for the carbonation of OPC-MOC binary cement. (3) Either increased in CO₂ concentration or curing duration enhances the carbonation and mechanical properties of the samples. |
| Rights: | All rights reserved |
| Access: | restricted access |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| 991022142757803411.pdf | For All Users (off-campus access for PolyU Staff & Students only) | 3.86 MB | Adobe PDF | View/Open |
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