The Effect of Si/Al Ratio to Compressive Strength and Water Absorption of Ferronickel Slag-based Geopolymer
| Main Authors: | Mustofa, Mustofa; Department of Material and Metallurgical Engineering, Institut Teknologi Sepuluh Nopember, Surabaya, Pintowantoro, Sungging; Department of Material and Metallurgical Engineering, Institut Teknologi Sepuluh Nopember, Surabaya |
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| Format: | Article info application/pdf eJournal |
| Bahasa: | eng |
| Terbitan: |
Institut Teknologi Sepuluh Nopember
, 2017
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| Subjects: | |
| Online Access: |
http://iptek.its.ac.id/index.php/jps/article/view/2334 http://iptek.its.ac.id/index.php/jps/article/view/2334/1914 |
Daftar Isi:
- Geopolymer material is inorganic polymers that are generally synthesized from aluminosilicate materials, such as ferronickel slag. In this study, synthesis of geopolymer material using NaOH 7 molar and Na2SiO3 solutions with different Si/Al ratio to make paste. Paste is molded in a metal mold with dimensions of 5x5x5 cm3, then released from the mold and heated in an oven at 80 °C for 24 hours. The specimens that have been heated further left at room temperature for 28 days and then tested for compressive strengthand water absorption. The results indicate a trend compressive strength increases and water absorption decreases with increasing the Si/Al ratio. The optimum condition is obtained when Si/Al ratio is 3.5.