Elucidating the hydration properties of paste containing thin film transistor liquid crystal display waste glass.
This study discusses the thin film transistor liquid crystal display (TFT-LCD) waste glass-blended cement (WGBC) pastes. It presents their compressive strength, their products of hydration and solid silicates changes. The samples were subjected to Fourier transformation infrared spectroscopy, differential thermal and thermo-gravimetric analysis and (29)Si magnetic angle spinning/nuclear magnetic resonance. The experimental XRD results demonstrated the speciation of the TFT-LCD waste glass, and that the major component was SiO(2). At 40% substitution of TFT-LCD waste glass, at 28 days and 56 days, the compressive strength was 35% and 30% lower, respectively, than that of the Portland cement paste. The intensity of the Ca(OH)(2) band at 3,710 cm(-1) in the 56-day hydrated products of the WGBC pastes that contain TFT-LCD waste glass exhibit comparatively weak peaks suggesting that much Ca(OH)(2) during hydration was consumed. Later, the CSH contents of the WGBC pastes increased, revealing that liberated Ca(OH)(2) was consumed in pozzolanic reactions.
Lin
Kae-Long
KL
Department of Environmental Engineering, National Ilan University, 1 Sec. 1, Shen Lung Road, I-Lan 260-41, Taiwan, ROC. kllin@niu.edu.tw
Wang
Nian-Fu
NF
Shie
Je-Lueng
JL
Lee
Tzen-Chin
TC
Lee
Chau
C
D005898:Glass / Q000737:chemistry*; D007220:Industrial Waste / Q000032:analysis*; D050866:Liquid Crystals / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D017640:Silicates / Q000737:chemistry; D012828:Silicones / Q000032:analysis; D013052:Spectrometry, X-Ray Emission; D017550:Spectroscopy, Fourier Transform Infrared; D013818:Thermogravimetry; D014173:Transistors, Electronic; D014961:X-Ray Diffraction
D007220:Industrial Waste; D017640:Silicates; D012828:Silicones