The Experts below are selected from a list of 26745 Experts worldwide ranked by ideXlab platform
Kae-long Lin - One of the best experts on this subject based on the ideXlab platform.
-
utilization of solar panel Waste Glass for metakaolinite based geopolymer synthesis
Environmental Progress, 2013Co-Authors: Huicong Hao, Kae-long Lin, Deying Wang, Saojeng Chao, Haushing Shiu, Tawui Cheng, Chaolung HwangAbstract:This study investigated the effect of solid-to-liquid ratio (0.4–1.0) on the properties of geopolymer, in which some metakaolinite was replaced by solar panel Waste Glass (0–40%). The experimental results indicate that geopolymer containing 10% solar panel Waste Glass at a solid-to-liquid ratio of 1.0 has higher compressive strength than geopolymer without solar panel Waste Glass at 1 and 7 days of curing. Thus, geopolymer containing 10% solar panel Waste Glass is more suitable than geopolymer without solar panel Waste Glass for practical applications. Furthermore, the porosity of the geopolymer declined as the density increased. The experimental results showed that the degree of reaction of the geopolymer increased with the solid-to-liquid ratio. The Fourier transform infrared spectroscopy spectra revealed that the principal peaks from the geopolymer corresponded to the Si—O—Al bonds. The scanning electron microscopy of the geopolymer indicated that the main structure of a geopolymer that contained solar panel Glass with a higher solid-to-liquid ratio was more compact and homogenous, which is consistent with the higher density and lower porosity. The experimental results showed that the solid-to-liquid ratio affected the properties of geopolymer considerably. In addition, we observed some positive influence of the solar panel Waste Glass on the compressive strength of metakaolinite-based geopolymer; however, it was limited to the early compressive strength. Furthermore, the degree of reaction of the geopolymer that contained 10% solar panel Waste Glass was similar to that of the metakaolinite-based geopolymer when the positive influence on the compressive strength diminished. © 2012 American Institute of Chemical Engineers Environ Prog, 32: 797–803, 2013
-
Utilization of solar panel Waste Glass for metakaolinite‐based geopolymer synthesis
Environmental Progress & Sustainable Energy, 2012Co-Authors: Huicong Hao, Kae-long Lin, Deying Wang, Saojeng Chao, Haushing Shiu, Tawui Cheng, Chaolung HwangAbstract:This study investigated the effect of solid-to-liquid ratio (0.4–1.0) on the properties of geopolymer, in which some metakaolinite was replaced by solar panel Waste Glass (0–40%). The experimental results indicate that geopolymer containing 10% solar panel Waste Glass at a solid-to-liquid ratio of 1.0 has higher compressive strength than geopolymer without solar panel Waste Glass at 1 and 7 days of curing. Thus, geopolymer containing 10% solar panel Waste Glass is more suitable than geopolymer without solar panel Waste Glass for practical applications. Furthermore, the porosity of the geopolymer declined as the density increased. The experimental results showed that the degree of reaction of the geopolymer increased with the solid-to-liquid ratio. The Fourier transform infrared spectroscopy spectra revealed that the principal peaks from the geopolymer corresponded to the Si—O—Al bonds. The scanning electron microscopy of the geopolymer indicated that the main structure of a geopolymer that contained solar panel Glass with a higher solid-to-liquid ratio was more compact and homogenous, which is consistent with the higher density and lower porosity. The experimental results showed that the solid-to-liquid ratio affected the properties of geopolymer considerably. In addition, we observed some positive influence of the solar panel Waste Glass on the compressive strength of metakaolinite-based geopolymer; however, it was limited to the early compressive strength. Furthermore, the degree of reaction of the geopolymer that contained 10% solar panel Waste Glass was similar to that of the metakaolinite-based geopolymer when the positive influence on the compressive strength diminished. © 2012 American Institute of Chemical Engineers Environ Prog, 32: 797–803, 2013
-
Recycling solar panel Waste Glass sintered as Glass-ceramics
Environmental Progress & Sustainable Energy, 2011Co-Authors: Kae-long Lin, Tien‐chun Chu, Ching-jung Cheng, Ching-hwa Lee, Tien-chin Chang, Kuen‐sheng WangAbstract:The mass of Waste solar panels in Taiwan is 1000 tons per year. The recycling of Waste Glass from solar panels, therefore, is an important issue. Solar panel Waste Glass is a potentially valuable source of major oxides, including SiO2 and Na2O. This investigation evaluated the feasibility of converting solar panel Waste Glass into new Glass-ceramic materials using DTA and XRD. The crystallized phases were cordierite, anorthite, parawollastonite, and pyroxene. As the material was heated to 600°C and then to 850°C, the hardness and degree of crystallization of the Glass-ceramic samples slowly increased. Experimental results demonstrate that the degree of crystallization of the Glass-ceramic samples increased with hardness. The activation energy of crystal growth was 22.42 kJ mol−1. Density, hardness, and flexural strength were strongly correlated with each other and increased with the degree of crystallization of all sintered samples. The solar panel Waste Glass that was fired at 850°C had a dense and homogeneous well-sintered microstructure and contained large Glass-like zones. The nuclei grew slowly to form crystallites when the samples were heated. This indicates that solar panel Waste Glass is indeed suitable for the Glass- ceramic materials. © 2011 American Institute of Chemical Engineers Environ Prog, 2011
-
The utilization of thin film transistor liquid crystal display Waste Glass as a pozzolanic material
Journal of Hazardous Materials, 2008Co-Authors: Kae-long Lin, Kuen‐sheng Wang, Wu-jang Huang, Je-lueng Shie, Tzen-chin Lee, Ching-hwa LeeAbstract:This investigation elucidates the pozzolanic behavior of Waste Glass blended cement (WGBC) paste used in thin film transistor liquid crystal displays (TFT-LCD). X-ray diffraction (XRD) results demonstrate that the TFT-LCD Waste Glass was entirely non-crystalline. The leaching concentrations of the clay and TFT-LCD Waste Glass all met the current regulatory thresholds of the Taiwan EPA. The pozzolanic strength activity indices of TFT-LCD Waste Glass at 28 days and 56 days were 89% and 92%, respectively. Accordingly, this material can be regarded as a good pozzolanic material. The amount of TFT-LCD Waste Glass that is mixed into WGBC pastes affects the strength of the pastes. The strength of the paste clearly declined as the amount of TFT-LCD Waste Glass increased. XRD patterns indicated that the major difference was the presence of hydrates of calcium silicate (CSH, 2 theta=32.1 degrees), aluminate and aluminosilicate, which was present in WGBC pastes. Portland cement may have increased the alkalinity of the solution and induced the decomposition of the Glass phase network. WGBC pastes that contained 40% TFT-LCD Waste Glass have markedly lower gel/space ratios and exhibit less degree of hydration than ordinary Portland cement (OPC) pastes. The most satisfactory characteristics of the strength were observed when the mixing ratio of the TFT-LCD Waste Glass was 10%.
Kuen‐sheng Wang - One of the best experts on this subject based on the ideXlab platform.
-
Recycling solar panel Waste Glass sintered as Glass-ceramics
Environmental Progress & Sustainable Energy, 2011Co-Authors: Kae-long Lin, Tien‐chun Chu, Ching-jung Cheng, Ching-hwa Lee, Tien-chin Chang, Kuen‐sheng WangAbstract:The mass of Waste solar panels in Taiwan is 1000 tons per year. The recycling of Waste Glass from solar panels, therefore, is an important issue. Solar panel Waste Glass is a potentially valuable source of major oxides, including SiO2 and Na2O. This investigation evaluated the feasibility of converting solar panel Waste Glass into new Glass-ceramic materials using DTA and XRD. The crystallized phases were cordierite, anorthite, parawollastonite, and pyroxene. As the material was heated to 600°C and then to 850°C, the hardness and degree of crystallization of the Glass-ceramic samples slowly increased. Experimental results demonstrate that the degree of crystallization of the Glass-ceramic samples increased with hardness. The activation energy of crystal growth was 22.42 kJ mol−1. Density, hardness, and flexural strength were strongly correlated with each other and increased with the degree of crystallization of all sintered samples. The solar panel Waste Glass that was fired at 850°C had a dense and homogeneous well-sintered microstructure and contained large Glass-like zones. The nuclei grew slowly to form crystallites when the samples were heated. This indicates that solar panel Waste Glass is indeed suitable for the Glass- ceramic materials. © 2011 American Institute of Chemical Engineers Environ Prog, 2011
-
The utilization of thin film transistor liquid crystal display Waste Glass as a pozzolanic material
Journal of Hazardous Materials, 2008Co-Authors: Kae-long Lin, Kuen‐sheng Wang, Wu-jang Huang, Je-lueng Shie, Tzen-chin Lee, Ching-hwa LeeAbstract:This investigation elucidates the pozzolanic behavior of Waste Glass blended cement (WGBC) paste used in thin film transistor liquid crystal displays (TFT-LCD). X-ray diffraction (XRD) results demonstrate that the TFT-LCD Waste Glass was entirely non-crystalline. The leaching concentrations of the clay and TFT-LCD Waste Glass all met the current regulatory thresholds of the Taiwan EPA. The pozzolanic strength activity indices of TFT-LCD Waste Glass at 28 days and 56 days were 89% and 92%, respectively. Accordingly, this material can be regarded as a good pozzolanic material. The amount of TFT-LCD Waste Glass that is mixed into WGBC pastes affects the strength of the pastes. The strength of the paste clearly declined as the amount of TFT-LCD Waste Glass increased. XRD patterns indicated that the major difference was the presence of hydrates of calcium silicate (CSH, 2 theta=32.1 degrees), aluminate and aluminosilicate, which was present in WGBC pastes. Portland cement may have increased the alkalinity of the solution and induced the decomposition of the Glass phase network. WGBC pastes that contained 40% TFT-LCD Waste Glass have markedly lower gel/space ratios and exhibit less degree of hydration than ordinary Portland cement (OPC) pastes. The most satisfactory characteristics of the strength were observed when the mixing ratio of the TFT-LCD Waste Glass was 10%.
Veena Sahajwalla - One of the best experts on this subject based on the ideXlab platform.
-
From Waste Glass to building materials – An innovative sustainable solution for Waste Glass
Journal of Cleaner Production, 2018Co-Authors: Heriyanto, Farshid Pahlevani, Veena SahajwallaAbstract:Abstract This report details a cost-effective new process for transforming mixed Waste Glass into high-value building materials without remelting. Worldwide, Waste Glass is a growing burden and new options are urgently needed for the large volumes of speciality, mixed, broken and contaminated Glass that cannot currently be recycled. Conventional Glass recycling technologies are limited by the need to separate Waste Glass into different Glass types and the extreme sensitivity of the remelting process to any contamination. In this study, we demonstrated that mixed broken Glass could be used as primary input in the production of polymeric Glass composites. The composites’ mechanical properties, utility, aesthetic appeal and expected market value were comparable to natural and engineered stone products, widely used as kitchen and bathroom benchtops and floor and wall tiles. Waste Glass powder with an average particle size smaller than 108 μm was ground then mixed with resin as a binder before the mixture was hot-pressed under pressure. Various ratios of Waste Glass to resin binder, as well as the effect of a coupling agent and reinforcing mesh were tested. The optimum PGC achieved a flexural strength of 48 MPa, water absorption below 0.002%, a density of 2.113 kg/m3 and compressive strength of 101 MPa with minimum scratch, wear and UV degradation behaviour. Its excellence in the mechanical value stand in parallel with engineering stone but, with cheaper and efficient process. Additionally, this new recycling process embodies an important unique alternative to the remelting of Waste Glass with the potential to deliver economic and environmental benefits wherever Waste Glass is stockpiled.
-
from Waste Glass to building materials an innovative sustainable solution for Waste Glass
Journal of Cleaner Production, 2018Co-Authors: Farshid Pahlevani, Veena SahajwallaAbstract:Abstract This report details a cost-effective new process for transforming mixed Waste Glass into high-value building materials without remelting. Worldwide, Waste Glass is a growing burden and new options are urgently needed for the large volumes of speciality, mixed, broken and contaminated Glass that cannot currently be recycled. Conventional Glass recycling technologies are limited by the need to separate Waste Glass into different Glass types and the extreme sensitivity of the remelting process to any contamination. In this study, we demonstrated that mixed broken Glass could be used as primary input in the production of polymeric Glass composites. The composites’ mechanical properties, utility, aesthetic appeal and expected market value were comparable to natural and engineered stone products, widely used as kitchen and bathroom benchtops and floor and wall tiles. Waste Glass powder with an average particle size smaller than 108 μm was ground then mixed with resin as a binder before the mixture was hot-pressed under pressure. Various ratios of Waste Glass to resin binder, as well as the effect of a coupling agent and reinforcing mesh were tested. The optimum PGC achieved a flexural strength of 48 MPa, water absorption below 0.002%, a density of 2.113 kg/m3 and compressive strength of 101 MPa with minimum scratch, wear and UV degradation behaviour. Its excellence in the mechanical value stand in parallel with engineering stone but, with cheaper and efficient process. Additionally, this new recycling process embodies an important unique alternative to the remelting of Waste Glass with the potential to deliver economic and environmental benefits wherever Waste Glass is stockpiled.
Ching-hwa Lee - One of the best experts on this subject based on the ideXlab platform.
-
Recycling solar panel Waste Glass sintered as Glass-ceramics
Environmental Progress & Sustainable Energy, 2011Co-Authors: Kae-long Lin, Tien‐chun Chu, Ching-jung Cheng, Ching-hwa Lee, Tien-chin Chang, Kuen‐sheng WangAbstract:The mass of Waste solar panels in Taiwan is 1000 tons per year. The recycling of Waste Glass from solar panels, therefore, is an important issue. Solar panel Waste Glass is a potentially valuable source of major oxides, including SiO2 and Na2O. This investigation evaluated the feasibility of converting solar panel Waste Glass into new Glass-ceramic materials using DTA and XRD. The crystallized phases were cordierite, anorthite, parawollastonite, and pyroxene. As the material was heated to 600°C and then to 850°C, the hardness and degree of crystallization of the Glass-ceramic samples slowly increased. Experimental results demonstrate that the degree of crystallization of the Glass-ceramic samples increased with hardness. The activation energy of crystal growth was 22.42 kJ mol−1. Density, hardness, and flexural strength were strongly correlated with each other and increased with the degree of crystallization of all sintered samples. The solar panel Waste Glass that was fired at 850°C had a dense and homogeneous well-sintered microstructure and contained large Glass-like zones. The nuclei grew slowly to form crystallites when the samples were heated. This indicates that solar panel Waste Glass is indeed suitable for the Glass- ceramic materials. © 2011 American Institute of Chemical Engineers Environ Prog, 2011
-
The utilization of thin film transistor liquid crystal display Waste Glass as a pozzolanic material
Journal of Hazardous Materials, 2008Co-Authors: Kae-long Lin, Kuen‐sheng Wang, Wu-jang Huang, Je-lueng Shie, Tzen-chin Lee, Ching-hwa LeeAbstract:This investigation elucidates the pozzolanic behavior of Waste Glass blended cement (WGBC) paste used in thin film transistor liquid crystal displays (TFT-LCD). X-ray diffraction (XRD) results demonstrate that the TFT-LCD Waste Glass was entirely non-crystalline. The leaching concentrations of the clay and TFT-LCD Waste Glass all met the current regulatory thresholds of the Taiwan EPA. The pozzolanic strength activity indices of TFT-LCD Waste Glass at 28 days and 56 days were 89% and 92%, respectively. Accordingly, this material can be regarded as a good pozzolanic material. The amount of TFT-LCD Waste Glass that is mixed into WGBC pastes affects the strength of the pastes. The strength of the paste clearly declined as the amount of TFT-LCD Waste Glass increased. XRD patterns indicated that the major difference was the presence of hydrates of calcium silicate (CSH, 2 theta=32.1 degrees), aluminate and aluminosilicate, which was present in WGBC pastes. Portland cement may have increased the alkalinity of the solution and induced the decomposition of the Glass phase network. WGBC pastes that contained 40% TFT-LCD Waste Glass have markedly lower gel/space ratios and exhibit less degree of hydration than ordinary Portland cement (OPC) pastes. The most satisfactory characteristics of the strength were observed when the mixing ratio of the TFT-LCD Waste Glass was 10%.
Amardeep Singh - One of the best experts on this subject based on the ideXlab platform.
-
Improvement on the properties of Waste Glass mortar with nanomaterials
Construction and Building Materials, 2020Co-Authors: Shaodan Hou, Zhenhua Duan, Amardeep SinghAbstract:Abstract Nowadays, nano materials were proved to be able to improve the properties of mortar, especially for recycled mortar with poor properties. In this study, nano-silica (nS) and nano-clay (nC) were used in Waste Glass mortar, with an additional amount of nS or nC varied from 0% to 6% of binder content by weight. Waste Glass cullet was used as fine aggregate to fully replace natural sand in Waste Glass mortar. The properties of fresh and hardened Waste Glass mortar with or without nS/nC, including the early stiffening, flowability, density, compressive and flexural strength, shrinkage and alkali-silica reaction, were experimentally examined in this study. In addition, the pore size distribution of Waste Glass mortar was studied by using the mercury intrusion porosimetry test to build the relationship between microstructure and macro properties. The results show that nC has a greater effect on the early stiffening and flowability of mortar than nS. The defining pore structure and denser microstructure lead to the higher density and mechanical properties of mortar with nS/nC. nC is more beneficial for improving the 28-day compressive strength of Glass mortar at a very small amount, whereas, the effect of nS on the strength at early ages of Glass mortar is clearer. The incorporating use of 1% nS/nC have similar effect on suppressing the drying shrinkage but quite different influence on the ASR expansion. The additional use of 1% nS can increase the ASR expansion of Glass mortar while 1% nC suppressed the expansion by 43.6% at 28-day.
