Recycling of concrete waste to produce ready-mix alkali activated cement
| Autor: | Hamdy El-Didamony, E. Heikal, Aya H. Mohammed, Hamdy A. Abdel-Gawwad, F.S. Hashim |
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| Rok vydání: | 2018 |
| Předmět: |
Cement
Materials science Process Chemistry and Technology Metallurgy 0211 other engineering and technologies 02 engineering and technology Thermal treatment 021001 nanoscience & nanotechnology Surfaces Coatings and Films Electronic Optical and Magnetic Materials chemistry.chemical_compound Compressive strength chemistry Sodium hydroxide 021105 building & construction Materials Chemistry Ceramics and Composites Alkali activated 0210 nano-technology |
| Zdroj: | Ceramics International. 44:7300-7304 |
| ISSN: | 0272-8842 |
| Popis: | The goal of this study is to produce an environmentally, and user friendly ready-mix alkali activated cement (RM-AAC) by thermal activation of concrete waste (CW) in the presence of sodium hydroxide (NaOH). Two major compositional factors, which play an important role in the performance of RM-AAC, i.e. temperature and NaOH percentage, were investigated. The CW showed high stability under thermal treatment up to 1200 °C; meanwhile it can be converted to distorted structure with high amorphicity in the presence of appropriate NaOH content. RM-AAC powder can react with water, forming hardened material with an acceptable compressive strength. Due to the white color of RM-AAC powder, it can be beneficially used in prestige construction projects and decorative works. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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