火力電廠底灰添加廢玻璃粉燒製成輕質骨材及其工程性質之研究

• Main Authors: Chen, zhi-ciang, 陳志強
• Other Authors: 王金鐘
• Format: Others
• Language: zh-TW
• Published: 2010
• Online Access: http://ndltd.ncl.edu.tw/handle/58577611502905053632

碩士 === 正修科技大學 === 營建工程研究所 === 98 === Abstract This study is to make use of the treated power plant bottom ash, mudstone powder, glass cullet powder, which is combined with swell and flux etc. after made into lightweight granular aggregate of different sizes through the processes of mixing and rotating granulation. The lightweight aggregate are dried in the shade before drying by oven, and sintered at a temperature increased by 5℃/min. The sintering temperature is set at 800℃, 850℃ and 900℃, power plant bottom ash is set to10%,swell is set to 6%, flux is set to6%～15%, base mechanics features of light weight aggregate through tests of compressive strength, density, water absorption and scanning electron microscopy, with discussion made on the impact of the contents of swell and flux, on the compression strength, density, water absorption, and physical properties. The sintering temperature in this study is controlled in consideration of energy efficiency and reduction of carbon dioxide emission, and sodium carbonate, calcium carbonate, and boric acid are used as swell, and alumina, iron oxide, sodium bicarbonate as flux to produce an adequate swelling environment to achieve the higher strength and lower density by increasing the viscidity and reducing the swelling temperature. Experimental results have proven that: (1)the major crystalline compound for materials like power plant bottom ash, glass cullet and mudstone powder, etc. is SiO2, and the minor crystalline compounds of them are Al2O3, Fe2O3, CaO, MgO, K2O and Na2O, which are suitable to be made into lightweight aggregate. (2) if the power plant bottom ash is 10%, when the vesicant adopts sodium carbonate at the fixed content of 6%, as for the mixture ration of M15-G63-E10 -Na6-Al 6～M15-G57-E10-Na6-NaH12, etc., in general, the requirements for green building materials can be met even at the firing temperature of 900°C, where, the mixing intensity of M15-G63-E10-Na6-Fe 6 is the highest. (3)if the power plant bottom ash is 10%, when the vesicant adopts calcium carbonate at the fixed content of 6%, as for the mixture ration of M15-G63-E10-Ca6-Al 6～M15-G57-E10-Ca6-NaH12, etc., in general, the requirements for green building materials can be met even at the firing temperature of 900°C, where, the mixing intensity of M15-G60-E10-Ca6-Al 9 is the highest. (4)if the power plant bottom ash is 10%, when the vesicant adopts boric acid at the fixed content of 6%, as for the mixture ration of M15-G63-E10-B6-Al 6～M15-G57-E10-B6-NaH12, etc., in general, the requirements for green building materials can be met even at the firing temperature of 800°C, where, the mixing intensity of M15-G60-E10-B6-Al 9 is the highest. (5) if the content of vesicant is fixed at 6% and that of the fusing agent is 6%~12%, when the content of power plant ash is 10%, the compression strength and density are high, but water absorption is low; when boric acid is adopted as the vesicant, the intensity is high, the density and water absorption are low more significant, however, the dosage shall not exceed 9%. if the power plant bottom ash is 10%, alumina, iron oxide and sodium bicarbonate as flux set to6%～15%, the vesicant adopts at the fixed content of 6%, when boric acid is adopted as the vesicant, the intensity is high, the density and water absorption are low more significant. Keywords: Power Plant Bottom Ash, Mudstone Powder, Glass Cullet Powder, Swell, Flux, Rotating Granulation.