The advancement of the industrial society brought the development of culture and live in comfortable circumstances. But it increased the waste quantity suddenly. We have need of a land reclamation site by Increase of waste. so ecurity of a land reclamation site will be hard with the environmental po...
The advancement of the industrial society brought the development of culture and live in comfortable circumstances. But it increased the waste quantity suddenly. We have need of a land reclamation site by Increase of waste. so ecurity of a land reclamation site will be hard with the environmental pollution and claim. The burn up is a possibility of reducing the waste quantity by 90%. If it reclaims the Ash that makes a bonfire of the refuse, there is an effects which extend the using period of reclamation site and an merits which recycle the energy that occurs from a process of burn up. But the incinerated municipal solid waste can be classified into two general types of ash : fly ash and bottom ash. Although the incineration ashes are, different according to the object incinerated, too much difference in physical characteristics and chemical components, have some similarities in view of elimination in powdered form. The disposal of powdered waste have been mostly treated by reclamation, and the existing study on recycling is been used as a substitute method which involves mixing the regular quantity of powdered ash with brick, hence producing a cement inter-rocking block etc. This method is simple and practical, and as time goes by, should the recycling material in any case contain some heavy metals, it bears the environmental risk of the large possibility of the harmful heavy metals leaching out. Hence it is necessary to apply a counter plan against the recycling of powdered incineration ashes etc., which is a suitable disposing method for the characteristics of incineration ashes, and environmental stability. As a result, the safe treatment and recycling of construction wastes are very important questions in the preservation of environmental and natural resources. In this research, we developed a method of treating incineration ashes with related guidelines in order to increase the recycling rate, save resources and prevent environmental pollution caused in the process of recycling; This is done in order to gain economic and social security. Also, through design, manufacture, and executive skill, we will be able to develop production methods for construction materials using municipal solid waste incineration ash. And, the diffusion of these knowledge to related industries will contribute to maintenance of application skill, and the improvement of our competitive construction power. I investigated the economic gains and losses according to the assumption occurrence, quantities, and recycling rate in order to analyse the recycling possibility of MSW incineration ash. Also, we investigated the present conditions concerning the technique, and characteristic system used for the recycling of MSW incineration ash. This study is mainly related to the recycling of incineration-ash, as an environmental-friendly construction material. For the successful achievement of the purpose of this study, it is important to first of all grasp the general characteristics of incineration-ash. Then secondly, search for quality in the characteristics of manufactured artificial aggregate using the incineration ash, and thirdly, perform experiments to investigate the application possibilities in concrete. The conclusions obtained from this study can be summarized as follows : (1) Recycling technology and cognition for incineration-ash in Korea are comparatively below standard. (2) Incineration-ash can be solidified by binder when mixed with industry by-product and cement. This is a characteristic of industry by-product material for incineration-ash that wish to handle safety. Hardener is effective as an admixture hence unrefined fly ash is more usable than paper sludge ash according to compressive strength and XRD. A suitable admixture use is very effective in artificial-aggregate's manufacture as well as compressive strength promotion. (3) Due to results obtained from leaching test to MSW incineration plant ash and cementitious solidified matrix, we found out that incineration fly ash had more heavy metal content than incineration bottom ash but we were able to make them cementitiously solidified and the results of the leaching test are in permission. Thus, it can be concluded from results of the leaching test that Heavy metals fixed safety in cementitious solidified. (4) The artificial aggregate properties made by normal temperature aggregate manufacturing process are different from natural aggregate's properties, but similar to properties of light weight aggregate. When the replacement ratio and the addition ratio for reducing a slight difference in compressive strengths was applied to them accordingly, they all showed stated compressive strengths which proves that they are very effective. The Elution density of manufactured artificial aggregate were below limit, hence we can certify environmental safety. (5) Clay is suitable as a sub-raw material for the control of Formulation for the mixing proportion because incineration plant ash has little SiO2 and many flux content, also in case of replacement of incineration fly ash to incineration bottom ash by 40%, the weight of aggregate rose a little, and the compressive strength rose too. (6) The suitable moisture content of Extrusion type and Disk type in manufacturing condition are 35% and 25% respectively. (7) According to the kiln's atmosphere and heat history in equal mixing ratios, and various temperatures on sintering condition, the characteristic of aggregate is positively affected. In this study, the suitable sintering temperature was 1080~1160℃. (8) Because absolute dry specific gravity in properties of matter of aggregate ranges between 0.9~1.6g/㎤, manufacture of aggregate is possible. According to the results of the eruption experiment, artificial aggregate was made up by fixing a noxiousness ingredient. Therefore, Artificial aggregate is environmentally stable . (9) It applied the artificial aggregates that are manufactured in the concrete. The result was that Slump and compressive strength are increased and unit weight is decreased according to the increase of artificial's replace (10) If it uses mixtures that crushed stone and artificial aggregate, Stress concentration and group together of aggregates will be able to occur. When comparing mixtures(artificial aggregate and crushed stone) and artificial aggregates, these are more effective from the sides of increase of workability, decrease of dead weight and compressive strength.
The advancement of the industrial society brought the development of culture and live in comfortable circumstances. But it increased the waste quantity suddenly. We have need of a land reclamation site by Increase of waste. so ecurity of a land reclamation site will be hard with the environmental pollution and claim. The burn up is a possibility of reducing the waste quantity by 90%. If it reclaims the Ash that makes a bonfire of the refuse, there is an effects which extend the using period of reclamation site and an merits which recycle the energy that occurs from a process of burn up. But the incinerated municipal solid waste can be classified into two general types of ash : fly ash and bottom ash. Although the incineration ashes are, different according to the object incinerated, too much difference in physical characteristics and chemical components, have some similarities in view of elimination in powdered form. The disposal of powdered waste have been mostly treated by reclamation, and the existing study on recycling is been used as a substitute method which involves mixing the regular quantity of powdered ash with brick, hence producing a cement inter-rocking block etc. This method is simple and practical, and as time goes by, should the recycling material in any case contain some heavy metals, it bears the environmental risk of the large possibility of the harmful heavy metals leaching out. Hence it is necessary to apply a counter plan against the recycling of powdered incineration ashes etc., which is a suitable disposing method for the characteristics of incineration ashes, and environmental stability. As a result, the safe treatment and recycling of construction wastes are very important questions in the preservation of environmental and natural resources. In this research, we developed a method of treating incineration ashes with related guidelines in order to increase the recycling rate, save resources and prevent environmental pollution caused in the process of recycling; This is done in order to gain economic and social security. Also, through design, manufacture, and executive skill, we will be able to develop production methods for construction materials using municipal solid waste incineration ash. And, the diffusion of these knowledge to related industries will contribute to maintenance of application skill, and the improvement of our competitive construction power. I investigated the economic gains and losses according to the assumption occurrence, quantities, and recycling rate in order to analyse the recycling possibility of MSW incineration ash. Also, we investigated the present conditions concerning the technique, and characteristic system used for the recycling of MSW incineration ash. This study is mainly related to the recycling of incineration-ash, as an environmental-friendly construction material. For the successful achievement of the purpose of this study, it is important to first of all grasp the general characteristics of incineration-ash. Then secondly, search for quality in the characteristics of manufactured artificial aggregate using the incineration ash, and thirdly, perform experiments to investigate the application possibilities in concrete. The conclusions obtained from this study can be summarized as follows : (1) Recycling technology and cognition for incineration-ash in Korea are comparatively below standard. (2) Incineration-ash can be solidified by binder when mixed with industry by-product and cement. This is a characteristic of industry by-product material for incineration-ash that wish to handle safety. Hardener is effective as an admixture hence unrefined fly ash is more usable than paper sludge ash according to compressive strength and XRD. A suitable admixture use is very effective in artificial-aggregate's manufacture as well as compressive strength promotion. (3) Due to results obtained from leaching test to MSW incineration plant ash and cementitious solidified matrix, we found out that incineration fly ash had more heavy metal content than incineration bottom ash but we were able to make them cementitiously solidified and the results of the leaching test are in permission. Thus, it can be concluded from results of the leaching test that Heavy metals fixed safety in cementitious solidified. (4) The artificial aggregate properties made by normal temperature aggregate manufacturing process are different from natural aggregate's properties, but similar to properties of light weight aggregate. When the replacement ratio and the addition ratio for reducing a slight difference in compressive strengths was applied to them accordingly, they all showed stated compressive strengths which proves that they are very effective. The Elution density of manufactured artificial aggregate were below limit, hence we can certify environmental safety. (5) Clay is suitable as a sub-raw material for the control of Formulation for the mixing proportion because incineration plant ash has little SiO2 and many flux content, also in case of replacement of incineration fly ash to incineration bottom ash by 40%, the weight of aggregate rose a little, and the compressive strength rose too. (6) The suitable moisture content of Extrusion type and Disk type in manufacturing condition are 35% and 25% respectively. (7) According to the kiln's atmosphere and heat history in equal mixing ratios, and various temperatures on sintering condition, the characteristic of aggregate is positively affected. In this study, the suitable sintering temperature was 1080~1160℃. (8) Because absolute dry specific gravity in properties of matter of aggregate ranges between 0.9~1.6g/㎤, manufacture of aggregate is possible. According to the results of the eruption experiment, artificial aggregate was made up by fixing a noxiousness ingredient. Therefore, Artificial aggregate is environmentally stable . (9) It applied the artificial aggregates that are manufactured in the concrete. The result was that Slump and compressive strength are increased and unit weight is decreased according to the increase of artificial's replace (10) If it uses mixtures that crushed stone and artificial aggregate, Stress concentration and group together of aggregates will be able to occur. When comparing mixtures(artificial aggregate and crushed stone) and artificial aggregates, these are more effective from the sides of increase of workability, decrease of dead weight and compressive strength.
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