多孔性廢棄物燒製調濕建材之研究; The research for sintering porous wastes into humidity adjusting construction materials

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Title:	多孔性廢棄物燒製調濕建材之研究;The research for sintering porous wastes into humidity adjusting construction materials
Authors:	歐陽順;Shun Ou-Yang
Contributors:	環境工程研究所碩士在職專班
Keywords:	多孔性;吸濕效率;助熔劑;flux;Porous;moisture absorption efficiency
Date:	2008-07-05
Issue Date:	2009-09-21 12:15:14 (UTC+8)
Publisher:	國立中央大學圖書館
Abstract:	本研究探討利用多孔性廢棄物與天然材料混合燒製調濕性建材之可行性，主要針對其配比、燒製條件及燒成材料特性等進行實驗研究。藉由燒成體之燒結狀況、吸濕率、樣品多元回歸與標準化來選擇適當之樣品並進一步分析其燒失率、收縮率、抗折強度、體密度、視比重、孔隙率、吸水率。以利探討設定參數之相互影響性，並提出燒製調濕建材最佳之條件。本研究選擇廢棄矽藻土、煤灰、火山灰及鹿沼土作為混合配比之材料，燒製溫度由各配比不同由900~1300℃，為增加燒結件之強度在混合配比中外添加1~7﹪之硼酸納為燒結時之助熔劑，由以上之條件進行燒成實驗。燒製完成之燒成件進行吸濕率之檢測。在四種配比之燒成件中，以矽藻土與火山灰混合之燒成件其吸濕效率較佳。因此選擇此混合配比之燒結件作進一步之分析。在燒結件基本性質分析中，燒失率方面：在相同燒製溫度下，廢棄物比例90%及助熔劑添加2%可以得到較低之燒失率。收縮率方面：廢棄物比例90%可以降低收縮率，但燒製溫度、助熔劑比例越高則收縮率越高。抗折強度方面：廢棄矽藻土與強度成反比之現象；燒製溫度與助熔劑添加比例則反之。在孔隙性質分析中，孔隙率、吸水率方面：廢棄物比例90%、不添加助熔劑、燒製溫度較低時，燒結件之孔隙率與吸水率較高。在吸放濕速率與效率方面則與上述條件下產生之情況相同。由於本研究之目的在於將廢棄物有效利用燒製為調濕建材，在設定之實驗參數所燒製之燒結件經過測試後，主要影響調濕建材效率的影響因素為廢棄物添加比例及助熔劑的添加比例。但考量未來調濕建材之實用性，因此在本研究燒製調濕建材的最佳條件，以廢棄物添加90﹪、助熔劑添加1~2﹪、燒製溫度範圍1000~1100℃之間，均可使調濕建材得到良好的吸濕效果。 This research the possibility for sintering porous wastes and mixing natural ingredients into humidity adjusting construction materials. The research is executed mainly pursuant to the mixing ratio, sintering conditions, and characters of sintering materials. The proper samples are selected according to the sinter status of sinter body, moisture absorption efficiency, sampling multiple regression and standardization. Further analysis for ignition loss, shrinkage ratio, bending strength, bulk density and apparent density, porosity and water absorption are then taken as to benefit for mutual influences of setting parameters. The best requirements for sintering humidity adjusting construction materials is also submitted. Spent diatomaceous earth, coal ash, volcanic ash, Allophane are chosen as the ingredient for the mixing formula. Sintering temperatures range between 900~1300℃ due to different mixing ratios among all formulas. 1~7% Sodium Perborat (Na2B4O7) is added into the mixing formula as the flux for enhancing the strength of the sinter body. The sintering experiment is executed according to the conditions mentioned above. The inspection of moisture absorption efficiency is taken on the finished sinter body. Among four sinter bodies each with its own unique mixing formula, the sinter body made of mixing spent diatomaceous earth and volcanic ash produces better moisture absorption efficiency and is thus chosen for taking further analysis. In anti-bending strength. In respect of basic character analysis of sinter bodies, the ignition loss: under the same sinter temperature, the mixing formula with 90% of wastes, and adding 2% flux can deliver a lower ignition loss. In the term of shrinkage ratio: the formula with 90% wastes can reduce shrinkage ratio but higher temperature and higher ratio of flux can result in higher shrinkage ratio. In the anti-bending strength: a reverse relationship exists between the ratio of Spent diatomaceous earth and strength. However, there is a positive relationship between sinter temperature and addition quantity of flux. In porosity character analysis, porosity ratio and moisture absorption: under the conditions of 90% of wastes, non-addition of flux, and lower sinter temperature will lead to higher porosity ratio and moisture absorption ratio of sinter body. The conditions mentioned above produce the same results in moisture absorption and release ratio and efficiency. The research aims at sintering wastes into humidity adjusting construction materials effectively. After the sinter body made of prescribed experimental parameters is tested, major factors influencing the efficiency of humidity adjusting construction materials are the addition ratio of wastes and addition quantity of flux. As the practicability of futuristic humidity adjusting construction materials is taken into consideration, the best conditions for sintering humidity adjusting construction materials in this research are addition of 90% waste, 1~2% flux, and sintering temperature range of 1000~1100℃ which can enabling humidity adjusting construction materials to produce excellent moisture absorption effects.
Appears in Collections:	[Executive Master of Environmental Engineering] Electronic Thesis & Dissertation

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