Water and waterglass mixtures for foam glass production
| Autor: | Christos G. Aneziris, Ulrich Groß, Daniela Hesky, Anja Horn |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
Foam glass
Diffraction Materials science Scanning electron microscope Process Chemistry and Technology Foaming agent Surfaces Coatings and Films Electronic Optical and Magnetic Materials Calorimeter Thermal conductivity Ultimate tensile strength Materials Chemistry Ceramics and Composites Composite material Porosity |
| Zdroj: | Ceramics International. 41:12604-12613 |
| ISSN: | 0272-8842 |
| Popis: | The present study investigates the use of sodium waterglass as an environmental friendly foaming agent to create fine porous foam glasses. The reactivity of the foaming agent was determined using thermogravimetrical measurements and difference scanning calorimeter analysis. The porosity of the foam glasses was measured and the pore morphology was evaluated using scanning electron microscopy. Phase formation caused by the addition of waterglass was studied using X-ray diffraction. Furthermore, thermal conductivity and splitting tensile strength of the materials were measured. Foaming by using only waterglass as foaming agent is possible. As a result, fine porous foam glasses with closed pores of 4 nm to 800 µm in diameter and mechanical strengths of 1.7 N/mm 2 could be obtained. Conventional foam glasses which are available on the market have bigger pore sizes up to 3 mm and achieve lower strength. For this reason the produced foam glass can be used as a promising light weight construction material. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect