The Experts below are selected from a list of 17958 Experts worldwide ranked by ideXlab platform
M C Tsai - One of the best experts on this subject based on the ideXlab platform.
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effects of nano sio2 and different Ash Particle sizes on sludge Ash cement mortar
Journal of Environmental Management, 2008Co-Authors: Kae-long Lin, W C Chang, D F Lin, Huanlin Luo, M C TsaiAbstract:The effects of nano-SiO2 on three Ash Particle sizes in mortar were studied by replacing a portion of the cement with incinerated sewage sludge Ash. Results indicate that the amount of water needed at standard consistency increased as more nano-SiO2 was added. Moreover, a reduction in setting time became noticeable for smaller Ash Particle sizes. The compressive strength of the Ash–cement mortar increased as more nano-SiO2 was added. Additionally, with 2% nano-SiO2 added and a cure length of 7 days, the compressive strength of the Ash–cement mortar with 1 μm Ash Particle size was about 1.5 times better that of 75 μm Particle size. Further, nano-SiO2 functioned to fill pores for Ash–cement mortar with different Ash Particle sizes. However, the effects of this pore-filling varied with Ash Particle size. Higher amounts of nano-SiO2 better influenced the Ash–cement mortar with larger Ash Particle sizes.
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Effects of nano-SiO2 and different Ash Particle sizes on sludge Ash–cement mortar
Journal of environmental management, 2007Co-Authors: Kae-long Lin, W C Chang, D F Lin, Huanlin Luo, M C TsaiAbstract:The effects of nano-SiO2 on three Ash Particle sizes in mortar were studied by replacing a portion of the cement with incinerated sewage sludge Ash. Results indicate that the amount of water needed at standard consistency increased as more nano-SiO2 was added. Moreover, a reduction in setting time became noticeable for smaller Ash Particle sizes. The compressive strength of the Ash–cement mortar increased as more nano-SiO2 was added. Additionally, with 2% nano-SiO2 added and a cure length of 7 days, the compressive strength of the Ash–cement mortar with 1 μm Ash Particle size was about 1.5 times better that of 75 μm Particle size. Further, nano-SiO2 functioned to fill pores for Ash–cement mortar with different Ash Particle sizes. However, the effects of this pore-filling varied with Ash Particle size. Higher amounts of nano-SiO2 better influenced the Ash–cement mortar with larger Ash Particle sizes.
Kae-long Lin - One of the best experts on this subject based on the ideXlab platform.
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effects of nano sio2 and different Ash Particle sizes on sludge Ash cement mortar
Journal of Environmental Management, 2008Co-Authors: Kae-long Lin, W C Chang, D F Lin, Huanlin Luo, M C TsaiAbstract:The effects of nano-SiO2 on three Ash Particle sizes in mortar were studied by replacing a portion of the cement with incinerated sewage sludge Ash. Results indicate that the amount of water needed at standard consistency increased as more nano-SiO2 was added. Moreover, a reduction in setting time became noticeable for smaller Ash Particle sizes. The compressive strength of the Ash–cement mortar increased as more nano-SiO2 was added. Additionally, with 2% nano-SiO2 added and a cure length of 7 days, the compressive strength of the Ash–cement mortar with 1 μm Ash Particle size was about 1.5 times better that of 75 μm Particle size. Further, nano-SiO2 functioned to fill pores for Ash–cement mortar with different Ash Particle sizes. However, the effects of this pore-filling varied with Ash Particle size. Higher amounts of nano-SiO2 better influenced the Ash–cement mortar with larger Ash Particle sizes.
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Effects of nano-SiO2 and different Ash Particle sizes on sludge Ash–cement mortar
Journal of environmental management, 2007Co-Authors: Kae-long Lin, W C Chang, D F Lin, Huanlin Luo, M C TsaiAbstract:The effects of nano-SiO2 on three Ash Particle sizes in mortar were studied by replacing a portion of the cement with incinerated sewage sludge Ash. Results indicate that the amount of water needed at standard consistency increased as more nano-SiO2 was added. Moreover, a reduction in setting time became noticeable for smaller Ash Particle sizes. The compressive strength of the Ash–cement mortar increased as more nano-SiO2 was added. Additionally, with 2% nano-SiO2 added and a cure length of 7 days, the compressive strength of the Ash–cement mortar with 1 μm Ash Particle size was about 1.5 times better that of 75 μm Particle size. Further, nano-SiO2 functioned to fill pores for Ash–cement mortar with different Ash Particle sizes. However, the effects of this pore-filling varied with Ash Particle size. Higher amounts of nano-SiO2 better influenced the Ash–cement mortar with larger Ash Particle sizes.
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The recycling of MSW incinerator bottom Ash by sintering
Waste Management & Research, 2003Co-Authors: Kuen-sheng Wang, Chen-chiu Tsai, Kae-long Lin, Kung-yuh ChiangAbstract:In recognition of the trend toward an increased use of bottom Ash as construction material, the authors have investigated the feasibility of recovering bottom Ash for use as aggregates, by sintering size-fractioned MSW incinerator bottom Ash (Particle size less than 1.41 mm and between 4.76-1.41 mm) at 400-1,000°C for 60-240 min, and then determining the sintered material characteristics, such as the compressive strength, heavy metal leachability and principal material properties. The results indicate that the pH of the Toxicity Characteristic Leaching Procedure (TCLP) leachate produced from both fine and the coarse Ash, ranged from 10.0-11.5, and from 7.5-11.3 respectively, and showed a tendency to decrease with an increasing sintering temperature. In addition, for both types of Ash the compressive strength of the sintered monoliths, ranging from 50-55 MPa, decreased slightly when the sintering temperature was increased from 400 to 600°C. Deformation problems may arise from the melting of glassy substanc...
Timo Nousiainen - One of the best experts on this subject based on the ideXlab platform.
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Volcanic Ash infrared signature: porous non-spherical Ash Particle shapes compared to homogeneous spherical Ash Particles
Atmospheric Measurement Techniques, 2014Co-Authors: Arve Kylling, Michael Kahnert, Hannakaisa Lindqvist, Timo NousiainenAbstract:The reverse absorption technique is often used to detect volcanic Ash clouds from thermal infrared satellite measurements. From these measurements effective Particle radius and mass loading may be estimated using radiative transfer modelling. The radiative transfer modelling usually assumes that the Ash Particles are spherical. We calculated thermal infrared optical properties of highly irregular and porous Ash Particles and compared these with mass-and volume-equivalent spherical models. Furthermore, brightness temperatures pertinent to satellite observing geometry were calculated for the different Ash Particle shapes. Non-spherical shapes and volume-equivalent spheres were found to produce a detectable Ash signal for larger Particle sizes than mass-equivalent spheres. The assumption of mass-equivalent spheres for Ash mass loading estimates was found to underestimate mass loading compared to morphologically complex inhomogeneous Ash Particles. The underestimate increases with the mass loading. For an Ash cloud recorded during the Eyjafjallajokull 2010 eruption, the mass-equivalent spheres underestimate the total mass of the Ash cloud by approximately 30% compared to the morphologically complex inhomogeneous Particles.
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Volcanic Ash infrared signature: realistic Ash Particle shapes compared to spherical Ash Particles
Atmospheric Measurement Techniques Discussions, 2013Co-Authors: Arve Kylling, Michael Kahnert, Hannakaisa Lindqvist, Timo NousiainenAbstract:Abstract. The reverse absorption technique is often used to detect volcanic clouds from thermal infrared satellite measurements. From these measurements Particle size and mass loading may also be estimated using radiative transfer modelling. The radiative transfer modelling usually assumes that the Ash Particles are spherical. We calculate thermal infrared optical properties of highly irregular and porous Ash Particles and compare these with mass- and volume-equivalent spherical models. Furthermore, brightness temperatures pertinent to satellite observing geometry are calculated for the different Ash Particle shapes. Non-spherical shapes and volume-equivalent spheres are found to produce a detectable Ash signal for larger Particle sizes than mass-equivalent spheres. The assumption of mass-equivalent spheres for Ash mass loading estimates will underestimate the mass loading by several tens of percent compared to morphologically complex inhomogeneous Ash Particles.
Arve Kylling - One of the best experts on this subject based on the ideXlab platform.
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Volcanic Ash infrared signature: porous non-spherical Ash Particle shapes compared to homogeneous spherical Ash Particles
Atmospheric Measurement Techniques, 2014Co-Authors: Arve Kylling, Michael Kahnert, Hannakaisa Lindqvist, Timo NousiainenAbstract:The reverse absorption technique is often used to detect volcanic Ash clouds from thermal infrared satellite measurements. From these measurements effective Particle radius and mass loading may be estimated using radiative transfer modelling. The radiative transfer modelling usually assumes that the Ash Particles are spherical. We calculated thermal infrared optical properties of highly irregular and porous Ash Particles and compared these with mass-and volume-equivalent spherical models. Furthermore, brightness temperatures pertinent to satellite observing geometry were calculated for the different Ash Particle shapes. Non-spherical shapes and volume-equivalent spheres were found to produce a detectable Ash signal for larger Particle sizes than mass-equivalent spheres. The assumption of mass-equivalent spheres for Ash mass loading estimates was found to underestimate mass loading compared to morphologically complex inhomogeneous Ash Particles. The underestimate increases with the mass loading. For an Ash cloud recorded during the Eyjafjallajokull 2010 eruption, the mass-equivalent spheres underestimate the total mass of the Ash cloud by approximately 30% compared to the morphologically complex inhomogeneous Particles.
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Volcanic Ash infrared signature: realistic Ash Particle shapes compared to spherical Ash Particles
Atmospheric Measurement Techniques Discussions, 2013Co-Authors: Arve Kylling, Michael Kahnert, Hannakaisa Lindqvist, Timo NousiainenAbstract:Abstract. The reverse absorption technique is often used to detect volcanic clouds from thermal infrared satellite measurements. From these measurements Particle size and mass loading may also be estimated using radiative transfer modelling. The radiative transfer modelling usually assumes that the Ash Particles are spherical. We calculate thermal infrared optical properties of highly irregular and porous Ash Particles and compare these with mass- and volume-equivalent spherical models. Furthermore, brightness temperatures pertinent to satellite observing geometry are calculated for the different Ash Particle shapes. Non-spherical shapes and volume-equivalent spheres are found to produce a detectable Ash signal for larger Particle sizes than mass-equivalent spheres. The assumption of mass-equivalent spheres for Ash mass loading estimates will underestimate the mass loading by several tens of percent compared to morphologically complex inhomogeneous Ash Particles.
Huanlin Luo - One of the best experts on this subject based on the ideXlab platform.
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effects of nano sio2 and different Ash Particle sizes on sludge Ash cement mortar
Journal of Environmental Management, 2008Co-Authors: Kae-long Lin, W C Chang, D F Lin, Huanlin Luo, M C TsaiAbstract:The effects of nano-SiO2 on three Ash Particle sizes in mortar were studied by replacing a portion of the cement with incinerated sewage sludge Ash. Results indicate that the amount of water needed at standard consistency increased as more nano-SiO2 was added. Moreover, a reduction in setting time became noticeable for smaller Ash Particle sizes. The compressive strength of the Ash–cement mortar increased as more nano-SiO2 was added. Additionally, with 2% nano-SiO2 added and a cure length of 7 days, the compressive strength of the Ash–cement mortar with 1 μm Ash Particle size was about 1.5 times better that of 75 μm Particle size. Further, nano-SiO2 functioned to fill pores for Ash–cement mortar with different Ash Particle sizes. However, the effects of this pore-filling varied with Ash Particle size. Higher amounts of nano-SiO2 better influenced the Ash–cement mortar with larger Ash Particle sizes.
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Effects of nano-SiO2 and different Ash Particle sizes on sludge Ash–cement mortar
Journal of environmental management, 2007Co-Authors: Kae-long Lin, W C Chang, D F Lin, Huanlin Luo, M C TsaiAbstract:The effects of nano-SiO2 on three Ash Particle sizes in mortar were studied by replacing a portion of the cement with incinerated sewage sludge Ash. Results indicate that the amount of water needed at standard consistency increased as more nano-SiO2 was added. Moreover, a reduction in setting time became noticeable for smaller Ash Particle sizes. The compressive strength of the Ash–cement mortar increased as more nano-SiO2 was added. Additionally, with 2% nano-SiO2 added and a cure length of 7 days, the compressive strength of the Ash–cement mortar with 1 μm Ash Particle size was about 1.5 times better that of 75 μm Particle size. Further, nano-SiO2 functioned to fill pores for Ash–cement mortar with different Ash Particle sizes. However, the effects of this pore-filling varied with Ash Particle size. Higher amounts of nano-SiO2 better influenced the Ash–cement mortar with larger Ash Particle sizes.
