Effect of Steel Slag on Shrinkage Characteristics of Calcium Sulfoaluminate Cement
| Autor: | Siraj Ai Qunaynah, Wen Jie Yuan, Da Wei Guo, Yi Shun Liao, Hao Ran Huang, Guo Xi Jiang |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Cement
Materials science Calcium sulfoaluminate Mechanical Engineering Metallurgy 0211 other engineering and technologies 04 agricultural and veterinary sciences 02 engineering and technology Condensed Matter Physics 040401 food science 0404 agricultural biotechnology Mechanics of Materials 021105 building & construction General Materials Science Shrinkage |
| Zdroj: | Materials Science Forum. 1036:263-276 |
| ISSN: | 1662-9752 |
| DOI: | 10.4028/www.scientific.net/msf.1036.263 |
| Popis: | The effects of steel slag with 0, 10%, 20 % and 40% content on the chemical shrinkage, autogenous shrinkage, internal relative humidity, and drying shrinkage of calcium sulfoaluminate cement paste were studied. The results show that the compressive strength of calcium sulfoaluminate cement paste at an early stage decreases gradually when the content of steel slag increases. When the steel slag content is 0 and 10%, the compressive strength of hardened cement pastes gradually decreases at 90 and 180 days, but the samples with steel slag content of 20% and 40% maintain the compressive strength growth within 180 d. With the extension of curing period, the gap of compressive strength is gradually narrowed. The autogenous shrinkage decreases with the increase of steel slag content and has a good linear relationship with the relative humidity inside the paste. The proportion of autogenous shrinkage to chemical shrinkage is deficient, and most chemical shrinkage occurs in the form of the pore volume. Although the trends of drying shrinkage and autogenous are consistent, the former is more severe than the latter. |
| Databáze: | OpenAIRE |
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