Manufacturing and Characterization of Lightweight Aggregate from TFT-LCD Waste Glass and Basic Oxygen Furnace Slag
Date Issued
2014
Date
2014
Author(s)
Peng, Szu-Yun
Abstract
The aim of this study was to manufacture the lightweight aggregate (LWA) from a mixture of thin film transistor liquid crystal display (TFT-LCD) waste glass and basic oxygen furnace (BOF) slag in the field prototype scale. Pellets were produced by pelletization then, rapidly sintered and bloated at the temperature between 1000°C and 1040°C by rotary kiln. The effects of thermal treatment condition on the physical and chemical properties of LWA were investigated.
Experimental results indicated that the vetrification of the surface of LWA led to improve its cylindrical compressive strength and lower its water absorption. In addition, the degree of vitrification was increased with temperature increase. The content of free-CaO in LWA was decreased significantly, because the crystallinity of crystalline phase which contained Ca element were increased. LWA was considered innocuous according to the experiment of alkali-silica reaction which included accelerated mortar bar test (ASTM C1260) and the rapid chemical test (ASTM C289). In conclusion, the physical and chemical properties of the LWA which was made of TFT-LCD waste glass and BOF slag complied with the specifications of commercial lightweight aggregate. Therefore, it could be used in the production of the structural lightweight concrete.
Subjects
TFT-LCD 廢玻璃
轉爐石
輕質骨材
游離氧化鈣(Free-CaO)
鹼矽反應(Alkali-Silica Reaction, ASR)
Type
thesis
File(s)![Thumbnail Image]()
Loading...
Name
ntu-103-R01541106-1.pdf
Size
23.54 KB
Format
Adobe PDF
Checksum
(MD5):09e4df4fd97dab0e1b89b241886e49ab