Sulfate resistance of calcium sulphoaluminate cement
Autor: | Seth Roswurm, Chris Ramseyer, Edward K. Rice, Eric P. Bescher |
---|---|
Rok vydání: | 2016 |
Předmět: |
Cement
Materials science Mechanical Engineering Sodium Weight change 0211 other engineering and technologies chemistry.chemical_element chemical and pharmacologic phenomena 02 engineering and technology Building and Construction Calcium 021001 nanoscience & nanotechnology Potassium sulfate chemistry.chemical_compound chemistry 021105 building & construction General Materials Science Tricalcium aluminate Mortar Sulfate Composite material 0210 nano-technology Civil and Structural Engineering Nuclear chemistry |
Zdroj: | Journal of Structural Integrity and Maintenance. 1:131-139 |
ISSN: | 2470-5322 2470-5314 |
DOI: | 10.1080/24705314.2016.1211235 |
Popis: | The resistance to chemical sulfate attack was tested for cements containing various amounts of tricalcium aluminate (C3A) and compared to that of calcium sulphoaluminate-belite cement containing no detectable amount of C3A. The six materials tested included a portland Type I (11% C3A), Type II (6% C3A), a Type V (0.5% C3A), and a rapid setting calcium sulphoaluminate (CSA) cement (0% C3A). In addition, two intermediate blends (0.4 and 5.0% C3A) were tested by combining these portland cements with shrinkage compensating CSA cement. Mortar cubes were immersed for two years in a solution containing high concentrations of sodium and sodium/potassium sulfate. Degradation of the mortar cubes was assessed qualitatively via visual observation and quantitatively through measurement of weight change. The magnitude of the degradation by sulfate attack was found to correlate well with C3A content as measured by X-ray diffraction, with Type I portland sustaining the heaviest damage and the CSA rapid setting ce... |
Databáze: | OpenAIRE |
Externí odkaz: |