| Summary: | 碩士 === 國立高雄應用科技大學 === 土木工程與防災科技研究所 === 104 === In this study, the use of alkali-activated technology to enhance the activity of water quenching slag, stimulate the cementation capacity of slag, and mix coffee dross into complex geopolymer can be green polymeric geopolymer material. First furnace slag produced geopolymer material, its mixing ratio: (1)alkali equivalent(AE) is set to 6%, 8% and 10% , (2) alkali modulus ratio (MS) is set to 1.0,1.5 and 2.0, (3) liquid / slag (L/S), such as the deployment of 1.67,1.25 and 1, mixing production 5cm × 5cm × 5cm test sample, to curing 3 days, 7 days and 28 days after executed the compression test, take the best ratio used as cementation material of coffee dross brick. Secondly coffee dross brick production, (1)alkali equivalent(AE) is set to 6%, 8% and 10% , (2) alkali modulus ratio (MS) is set to 2.0, (3) liquid and slag (L/S) ratio, such as the deployment of 1.67,1.25 and 1.00 (4) binder and coffee dross weight (B/A) ratio equal 3, 4 and 5, and pouring set to 5cm × 5cm × 5cm test specimen, and then moved to 60℃ oven for 48 hours after, then form removal, to curing 3 days, 7 days and 28 days after executed a series of tests, investigate between curing time and compression strength other relations.
The results showed that Coffee Dross brick: (1) Setting time will be shortened by 45% with equivalent alkali and liquid binder ratio increases. And with be shortened with liquid slag ratio shortened. (2) Compressive strength will be decreased with equivalent alkali, liquid slag increasing. The maximum growth of 65%. (3) Water absorption increase with alkali equivalents, liquid binder ratio decreased by about 1.5times. (4) Shrinkage of coffee brick can increase with alkali equivalents, liquid binder ratio and liquid and slag ratio while rising trend by about 3.8%. (5) Compressive strength and water absorption can meet CNS-382 ordinary brick requirements for third brick.
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