• Proceedings of the Korean Institute of Building Construction Conference
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• 2016.10a
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• pp.30-31
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• 2016

Recently in the construction site is required various performance of mortar to deal with reliability, economy. Especially of environment-friendly, saving resources and high performance of mortar it began to require improvement of performance. Therefore, in this study, a series of tests was designed to develop a using mud flat mortar in view of the high absorption rate of tidal flats, to fix the water cement ratio to 70%. The mixing ratio were 10:0, 9:1, 8:2, 7:3, 6:4, 5:5, 4:6 of fine aggregate and mud flats. Compared the flow value, chloride content, compressive strength, tensile strength, and workability of fine aggregate the substituted mud flat mortar and basic cement mortar, present the basic data on the characteristics and effects of mud flat mortar.

• Proceedings of the Korean Institute of Building Construction Conference
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• 2016.10a
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• pp.87-88
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• 2016

In the current construction market usage cement and aggregate is increasing continuously. This is progressing serious environmental pollution due to the carbon dioxide generated during cement production. Further, by using a large amount of aggregate, they tend to have even reduced natural resources. As a result, the reduction of carbon dioxide through the United Nations Framework Convention on Climate Change, the energy saving has been positioned as a global trend. Therefore, in this study, instead of fine aggregate fix the cement, by the use to increase the proportion of the tidal flats, to try to reduce the amount of cement and fine aggregate. Accordingly, according to increasing the proportion of the mud flat be analyzed for properties the compressive strength, tensile strength, flow, chloride test, workability of the mortar.

• Proceedings of the Korean Institute of Building Construction Conference
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• 2015.11a
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• pp.115-116
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• 2015

Since concrete has evolved to the development of the quality and performance there currently being used civil engineering, as the most important material in the construction sector. But the discovery of alternative building materials and indiscriminate use is negligible. So that is the situation facing the shortage of natural aggregate. Accordingly, this study reviewed the mechanical properties by replacing the aggregate through the mud flat of eco-friendly materials and analyze the usability by adding a high-performance water reducer for promoting workability.

• Proceedings of the Korean Institute of Building Construction Conference
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• 2015.11a
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• pp.32-33
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• 2015

Depending on the industrialization, construction market has grown buildings are based on concrete will continue to increase. But the problems of environmental pollution come to the fore with the indiscriminate use of concrete and rapid development. In addition, carbon dioxide(CO₂) in the process of producing cement being emitted a large amount of has been caused a serious problem of environmental pollution. This trend is being actively conducted research to reduce the use of cement. In this study, eco-friendly materials, such as flats, Blast-furnace slag by mix and cement review the mechanical characteristics of the mudflats eco-friendly cement mortar to reduce the usability of the review were seen as a green building material.

• Journal of the Society of Disaster Information
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• v.13 no.3
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• pp.348-357
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• 2017

In this study, we examined the physical properties of cement mortar by replacing a part of the amount of fine aggregate in moist mud flat. I analyzed the possibilities of using bricks. Flow measurement results show that the flow value increases as the mixing ratio of cement and fine aggregate increases and the flow value decreased as the replacement ratio of moist mud flats decreased. Chloride contents were also found to decrease with decreasing substitution rate of moist mud flats. As a result of the compressive strength measurement, the compressive strength increased in inverse proportion as the displacement ratio of moist mud flats decreased in most mixing ratio. As a result of tensile strength measurement, the tendency was similar to compressive strength and the intensity increased as the replacement ratio of moist mud flats decreased.

• Journal of the Society of Disaster Information
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• v.11 no.4
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• pp.589-596
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• 2015

As urbanization progressed along with quantitative expansion of the construction industry, concrete has developed diversely as a material that is the most extensively used in the construction industry. However, aggregate resources that are an essential element of concrete production are gradually being depleted and the phenomenon of aggregate shortage has been intensifying due to the reinforcement of regulations on environmental issues. Therefore, in the present study, environment friendly mortar was made by replacing aggregate with mud that is dumped when dredging sand is dumped. To identify the dynamic characteristics of the mortar and to identify its fire resistance efficiency, the mortar was heated and its residual compressive strength was measured. In the results, the residual compressive strength values of MM1, MM2, and MM3 were 45%, 95%, and 57.7% respectively and the mix MM2 showed the highest fire resistance efficiency.