| Summary: | 碩士 === 國立屏東科技大學 === 土木工程系所 === 95 === Fly ash and furnace slag are the dispose waste both of the fossil power plant and the steel industry. Several researches and experiment show those can be recycled. They can replace the cement as the additive and make the concrete structure more environmental and then reach the economic benefit by recycling them.
Because the fly ash and furnace slag have pozzolans’ characteristic, they can not only replace partial cement, but also improve and upgrade the mechanics and physical property. So this research will mainly focus on the different amount of fly ash and furnace slag as the additive, with different W/b ratio different age then explore the variety of properties and the best quantity for replacement of portland cement type II.
This research shows the mechanics and physical properties with 6 different additive ratios, 3 different W/b ratios and 4 different ages. The results also show that slag/fly ash ratio(20%/20%) as the replacement with any one W/b ratio will have the best late age(56~91days) strength, the lowest absorption, the good performance both on workability and slump and the best economic benefit.
|
|---|
