Strength characteristics and microstructural properties of cement mortars incorporating synthetic wollastonite produced with a new technique
| Autor: | Hasan Yucel, Sümeyye Özcan |
|---|---|
| Přispěvatelé: | Yücel, H.E., Department of Civil Engineering, Nigde Omer Halisdemir University, Nigde, Turkey -- Özcan, S., Construction Technology, Nigde Technical Sciences Vocational School, Nigde Omer Halisdemir University, Nigde, Turkey, 0-Belirlenecek |
| Rok vydání: | 2019 |
| Předmět: |
Cement
Acicular Materials science 0211 other engineering and technologies Compressive strength 020101 civil engineering 02 engineering and technology Building and Construction engineering.material Synthetic wollastonite Wollastonite Cement mortar Hydrothermal circulation 0201 civil engineering Flexural strength 021105 building & construction engineering General Materials Science Fourier transform infrared spectroscopy Composite material Mortar Microstructure Quartz Civil and Structural Engineering |
| Zdroj: | Construction and Building Materials. 223:165-176 |
| ISSN: | 0950-0618 |
| Popis: | In this study, synthetic wollastonite (SW) mineral was produced by using a new production method. This method which quartz and calcite minerals are used as raw materials, is 3-step wollastonite production method consisting of mechanochemical process, hydrothermal process and solid state reaction process. It was proved that the material (SW) produced with the help of this new method is wollastonite by using SEM, XRF and XRD analysis. The effect of SW on the mechanical and microstructural properties of cement mortar (CM) were experimentally investigated. The CMs were produced without SW as control mortar and by using SW with the ratios of 3%, 6%, 9%, 12% and 15% instead of cement. Compressive and flexural strength tests were conducted at 7 and 28 days. In addition, SEM/EDX, TGA/DTA and FTIR analysis were applied to mixtures incorporating SW in the ratios of 0%, 3%, 9% and 15% at 28 days. Test results indicate that mechanical performance of CMs improved up to 9% SW content. However, CMs with 12% and 15% SW had higher compressive and flexural strength than the control mortar. Microstructural analysis demonstrated that improvement in the strength characteristics of CMs incorporating SW can be explained with the acicular particle structure of SW. In addition, according to TGA/DTA and FTIR analysis, it is observed that CaCO3 in CMs decreased with the increase of SW. © 2019 Elsevier Ltd |
| Databáze: | OpenAIRE |
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