The influence of sand nature on the residual physical and mechanical properties of concrete after exposure to elevated temperature
| Autor: | Abdelhafid Ounis, Samya Hachemi |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Cement
Environmental Engineering Materials science 0211 other engineering and technologies 02 engineering and technology Residual Compressive strength Volume (thermodynamics) Properties of concrete 021105 building & construction Composite material Porosity Calcareous Cooling down 021101 geological & geomatics engineering Civil and Structural Engineering |
| Zdroj: | European Journal of Environmental and Civil Engineering. 23:1003-1018 |
| ISSN: | 2116-7214 1964-8189 |
| DOI: | 10.1080/19648189.2017.1327893 |
| Popis: | A considerable number of investigations have been conducted on the physical and mechanical properties of concrete made with crushed calcareous sand at room temperature. However, no attention has been directed at studying the performance of concrete made with crushed calcareous sand at elevated temperature. This study investigates the effects of elevated temperatures on the residual mechanical and physical properties of concretes made of two types of sand (siliceous and calcareous). For each sand type, three water/cement ratios (w/c = .6, .42 and .27) were tested. Specimens were heated under six different temperatures: 20 °C (ambient temperature), 150, 250, 400, 600 and 900 °C. After cooling down to ambient temperature, the compressive strength, ultrasonic pulse velocity, mass loss, water porosity, density and specimens’ volume were determined. Also surface crack observations were conducted with Microscope. Results obtained show that there are no significant differences in the physical properties o... |
| Databáze: | OpenAIRE |
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