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Effects of SiO 2 / Na 2 O molar ratio on properties of TFT ‐ LCD waste glass‐metakaolin‐based geopolymers
Author(s) -
Lin KaeLong,
Shiu HauShing,
Hwang ChaoLung,
Cheng An,
Cheng TaWui
Publication year - 2014
Publication title -
environmental progress and sustainable energy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.495
H-Index - 66
eISSN - 1944-7450
pISSN - 1944-7442
DOI - 10.1002/ep.11744
Subject(s) - metakaolin , materials science , thin film transistor , geopolymer , compressive strength , curing (chemistry) , liquid crystal display , composite material , thermal conductivity , raw material , glass recycling , waste management , optoelectronics , layer (electronics) , organic chemistry , chemistry , engineering
Only 69% of thin‐film transistor liquid crystal display ( TFT‐LCD ) waste glass is reused in Taiwan. More reuse methods must be developed to increase this percentage. TFT‐LCD waste glass mostly contains SiO 2 and Al 2 O 3 , which are raw materials used in the production of geopolymer. This study examines the effect of the SiO 2 / Na 2 O ratio (0.8–2.0) and the replacement of 0–40% TFT‐LCD waste glass on the properties of waste glass‐metakaolin‐based geopolymer. The samples underwent a series of tests to determine their quality, including their setting time, compressive strength, and thermal conductivity. The results showed that the compressive strength increased with curing time, and that the products of geopolymerization filled the pores, causing the thermal conductivity to increase with curing time. © 2013 American Institute of Chemical Engineers Environ Prog, 33: 205–212, 2014