| Summary: | 碩士 === 正修科技大學 === 營建工程研究所 === 99 === The paper carried out the regeneration treatment of cement slurry using waste concrete fragmentation, to replace the high energy consumption and high carbon dioxide emissions of cement. This recycled cement and mix the waste glass for recycling construction waste as an alternative to aggregate, cement and other materials made of re-tile products, as applications of green recycling material. In the experment is calcination the waste concrete powder after 450℃, 550℃, 650℃, 750℃ and 850℃ five kinds of temperature, to replace part of cement, compression test and then analyzed by energy-dispersive component, of calcination temperature and the amount of cement replaced by the effect of body strength test.
Tile experment is mixing the waste concrete and waste glass powder to replace most of the clay powder, and add a little flux, the temperature below 1000 ℃ calcined kiln tile, then the compression test, water absorption and flexural tests, of calcination temperature and the waste concrete powder and waste glass powder on the impact strength of specimens.
The results of replace part of cement experiment confirm that: (1) When replacing the cement volume is slightly less than 15% strength reduction, and more than 15% of the intensity with increased volume cause strength worse. (2)Accordant to compression tests and SED test that calcination temperature of 650℃ to make the results more stable. (3) water-cement ratio 0.45, instead of cement than 15%, 28-day compressive strength of 435.57kgf/cm2. (4) water-cement ratio 0.55, instead of cement than 15%, 28-day compressive strength of 332.55kgf/cm2. (5) 0.65 water-cement ratio, instead of cement than 5%, 28-day compressive strength of 304.22kgf/cm2.
The tile results confirmed: (1) 900℃ calcined produced better tiles. (2) the amount of waste concrete and flux should not exceed 5%, otherwise easily lead to deformation of the tile. (3) flux of iron oxide and alumina, water absorption of tile was less than 1%, compliance with CNS regulatory. (4) flux of iron oxide and alumina, the tile bending test were higher than the 180kgf/cm2, compliance with CNS regulatory.
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