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RISS 인기검색어
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- 저자 : ( Deng-fong Lin ) (검색결과 3 건)
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( Deng-fong Lin ),( Huan-lin Luo ),( Wei-zhu Wang ),( Jia-wen Chen ) 한국폐기물자원순환학회(구 한국폐기물학회) 2019 ISSE 초록집 Vol.2019 No.-
The bottom ash (BA) is the residuals of the municipal trashes after incinerated in an incinerator plant. The BA is usually collected and landfilled as the final disposal treatment. However, it becomes harder finding locations for Taiwan as an island with a very scarce land for the landfill treatment. Moreover, the amount of the BA recycled was far behind the amount produced in which leading to a hard problem for central and local governments. How to properly recycle or reuse of the BA becomes an urgent need. From the results obtained by many different researchers, the use of the BA as a ceramic material may help improve the strength of related products. In this study, the BA was applied as part of the replacement for kaolin in the manufacture of the brick specimens. To investigate the effects of the kiln temperature on the brick specimens and evaluate the related properties of the specimens, the kiln temperatures were set at 850, 900, and 950℃. The municipal solid waste incineration BA was applied as part of kaolin replacement in the manufacture of bricks. Test results showed that the shrinkage increment of bricks tended to be smooth when the BA replacement was larger than 10%. Moreover, the results of loss on ignition indicated that the organic and inorganic matters and heavy metal were mostly burned off at the kiln temperature of 900℃ or above. The compressive strengths of bricks increased with the increase amount of BA replacement. The study of the micro structure observations showed that the silicification of the brick specimen bodies reduced with the increase amount of the BA replacement. Moreover, the results obtained from XRD indicated that the peak intensities of the SiO<sub>2</sub> in the brick specimens decreased with increase amount of the BA replacement. This study suggested that the optimal amount of BA replacement and the kiln temperature were 20% and 950℃, respectively.
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Study properties of soft subgrade soil stabilized by sewage sludge/lime and nano-SiO<sub>2</sub>
Lin, Deng-Fong,Luo, Huan-Lin,Chen, Chien-Ta,Cai, Ming-Du Techno-Press 2016 Geomechanics & engineering Vol.10 No.6
The pozzolanic characteristics of a sludge incinerated into ash were determined in this study. Lime is commonly used as a stabilizer for the treatment of soils, whereas sewage sludge ash (SSA) is often applied with lime to improve soft subgrade soil. In this study, a cohesive soil categorized as A-4 (low-plasticity clay) by AASHTO classifications was mixed with SSA/lime with a 3:1 ratio. Nano-$SiO_2$ was also added to the soil. To identify changes in the workability, strength, permeability, and shear strength of the soft subgrade soil, basic soil tests were conducted, and the microstructure of the treated soil was analyzed. The results indicate that SSA/lime mixtures improve the properties of soft subgrade soil and transform the soil from "poor subgrade soil" to "good to excellent subgrade soil" with a CBR > 8. Additionally, the addition of 2% nano-$SiO_2$ increases the unconfined compressive strength of soft subgrade soil treated with SSA/lime mixture by approximately 17 kPa. However, the swelling of the treated soil increased by approximately 0.1% after the addition of nano-$SiO_2$ and lime. Thus, soil swelling should be considered before lime and nano-$SiO_2$ are applied to soft subgrade soil.
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Study the Thermal Behaviours for Asphalt Concrete Mixed with Basic Oxygen Furnace Slags
( Huan-lin Luo ),( Deng-fong Lin ),( Show-ing Shieh ),( Yi-hong Liu ),( Yu-kai Wang ) 한국폐기물자원순환학회(구 한국폐기물학회) 2019 ISSE 초록집 Vol.2019 No.-
In Taiwan, the basic oxygen furnace (BOF) slags are characterized as porous material and with better heat insulation than that of the natural aggregates. The BOF slags have been applied to the pavement as parts of the natural aggregate replacement. The asphalt concrete (AC) with the BOF slags replacements were well recognized and performed. In this study, parts of natural aggregates were replaced by the BOF slags in the AC helping resolve the gradual shortage of the natural resources and save energy and reduce the produce of carbon. In this study, parts of the natural aggregates were replaced by the coarse and fine BOF slags in the construction of AC. Because the thermal insulation and heat absorption are different between BOF slags and natural aggregates, the infrared thermal conductivity measuring instrument was applied to obtain the surface temperatures presented as thermal infrared images in AC. Then, the infrared temperature distribution images were obtained by using the image transformation techniques. The results show that the thermal conductivity for the AC containing with fine BOF slag was larger than that for the coarse BOF slag. The BOG slag replacement in AC helped improve the thermal insulation in AC. Moreover, the temperature was more uniformly distributed for AC with the fine BOF slag than that for the coarse BOF slag replacement. However, the coarse BOF slag was better in the preserve of energy for AC than that of the fine BOF slag.
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