Materials | |
Use of Gypsum as a Preventive Measure for Strength Deterioration during Curing in Class F Fly Ash Geopolymer System | |
Yubin Jun2  Jae Eun Oh1  | |
[1] School of Urban and Environmental Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan Metropolitan City 689-798, Korea; E-Mail | |
关键词: fly ash; geopolymer; gypsum; Na2SO4; strength deterioration; nanometer-crack; | |
DOI : 10.3390/ma8063053 | |
来源: mdpi | |
【 摘 要 】
This study discusses strength deterioration during the curing process of fly ash geopolymer and the use of CaSO4·2H2O (gypsum) as a deterioration remedy when the ash was synthesized using a 10M NaOH and Na-silicate solution. The strength decline was mainly due to the widespread formation of nanometer-sized cracks that were related to excessive Na and Si concentrations at an early age. Use of 2 wt% CaSO4
【 授权许可】
CC BY
© 2015 by the authors; licensee MDPI, Basel, Switzerland.
【 预 览 】
Files | Size | Format | View |
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RO202003190011664ZK.pdf | 6005KB | download |