• Proceedings of the KSR Conference
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• 2011.10a
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• pp.3237-3250
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• 2011

As the growing concern about environment and earthquake for the concrete structure, many seismic rehabilitation and retrofitting methods have recently been studied but they are not coping enough with the changes of structure, specificly various problems have been found in seismic rehabilitation method - both in exposure or non exposure - when they are implemented to the underground structure, utility conduit, water supply facilities, underground wall, parking lot, road pavement, and elevated structure etc. This study is about the seismic rehabilitation method using environmentally friendly functional inorganic mortar and resilient material, and it is effectively retrofitted seismic performance as it reinforces not only physical strength, but also flexural and bond strength from the resilient material, and it has been analyzed and evaluated when the environmentally friendly functional inorganic mortar and the resilient material are applied so as to countermeasure the effect of earthquake and viable problems and approved for possibility of various applications and wide use.

• 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 Korea Furniture Society
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• v.26 no.3
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• pp.286-290
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• 2015

The wood veneers were clearly rainbow-colored with natural dyes. As shown through Korean-style jacket with stripes of multi-colors beyond traditional obang colors (red, blue, yellow, black and white colors), eco-friendly coloring methods representing Korean colors familiar from old times could be used nobly by coloring natural wood veneer being raw material of wood products. In terms of industrialization, the study to manifest korean color, substituting chemical stains such as dye and pigment, would be necessary. In order to realize this purpose, the study about economical dyeing materials and characteristics, that is, mordant, dyeing and drying techniques showing environment-friendly coloring and high coloration level ought to be followed. In addition to this, investigating discoloration transition by fading test for interior and exterior uses would have to be carried out.

• Korean Journal of Organic Agriculture
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• v.22 no.2
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• pp.241-254
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• 2014

This case study surveyed management situations of environmentally friendly farming(EFF) producers' organization and their main activities. Farmers are aging as an average age of 55-year old and producing fruit-bearing vegetables. The EFF did not increase farmer's income, however, price and income was stabilized more than that of conventional farming because of contract farming. Farm household liabilities are caused by purchasing agricultural machinery, materials and so on. Farmers of EFF have been also cultivating conventional farming, but they don't plan much conversion intention of conventional farming into EFF owing to lack of differentiated and stable market for their EFF products. And they are guessing that EFF income will increase a little. For increasing of EFF income, they think that it is necessary to reduce production cost, produce high quality production, develop processing foods, enlarge contract farming and so on.

• Journal of Agricultural Extension & Community Development
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• v.17 no.3
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• pp.549-585
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• 2010

Our global environment and ecology are now facing crisis due to the hrincreased waster materials caused by reckless abuse of resources and energy with the continuous development of our society. Therefore the whole nation should recognize the environmental pollution seriously and should accept sustainable development principles. The country is looking for actions against the problems in various ways. The introduction of reckless and duplicating western housing plan should be ceased but a new housing plan conforming to our nature should be found. In this regard, it is believed that it is a good alternative to succeed tradition and identity of Korean housing plan and suggest a new plan for better ecological housing by analyzing the environment friendliness of our traditional Korean houses. In this study, the traditional residential components were divided into physical and design aspects and the characteristics of environment friendly Korean traditional houses were analyzed.

• Proceedings of the Korean Institute of Building Construction Conference
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• 2019.05a
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• pp.203-204
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• 2019

Recently, exposed concrete designs have been placed everywhere due to increased interest in indoor residential environments. In addition, in order to overcome the disadvantages of litracon, which was developed by mixing optical fiber, LEFC(Light Emotion Friendly Concrete) was developed in Korea, which improved unit price and constructivity by inserting hard acrylic rods. LEFC, using foaming agent and lightweight aggregate for light weighting, has disadvantages that decrease mechanical properties, and thus improved mechanical properties by using ultra-high performance concrete. Also, due to the characteristics of UHPC materials, it showed excellent self-consolidating performance. Considering these characteristics, a LEFC mold with pattern design was developed. The LEFC blocks were built so that pattern shapes could be seen and these were applied on-site to Sewoon plaza, located in Seoul.

• Proceedings of the Korean Institute of Interior Design Conference
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• 2005.05a
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• pp.207-211
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• 2005

This research is aimed to study the finishing material applied in interior space for improving residential environment. First of all, it finds out what is 'Sick Building Syndrome' and 'Sick House Syndrome', how harmful to human body about indoor air pollution substance (such as volatility organic compound, formaldehyde) and investigate the effect when the environment-friendly finishing material is used. Secondly, classify and examine all kind of finishing material applied in interior space. Finally, after emphasize the importance of environment-friendly finishing material from domestic or overseas, this research suggest the basic information of environment-friendly finishing material in order to use in the future buildings.

• KOREAN JOURNAL OF PACKAGING SCIENCE & TECHNOLOGY
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• v.9 no.1
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• pp.25-32
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• 2003

Packaging has been regarded as a environmental problem because of its relatively high portion of municipal solid wastes. Especially, cosmetic packaging has been focused because of characteristics of cosmetic packaging. Cosmetic products are highly sensitive products that pursue the beauty differently from other products. Cosmetic packaging materials are difficult to be recycled. Purpose of this study is to suggest the method to improve the environmental friendly packaging of cosmetic products. This study contains the major governmental policies on the cosmetic packaging in terms of environment issues in Korea, and suggested methods to develop the environmental friendly packaging of cosmetic products.

• Journal of the Korean Society of Manufacturing Process Engineers
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• v.17 no.6
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• pp.130-135
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• 2018

Currently the automobile market is developing eco-friendly vehicles in order to cope with fuel efficiency regulations. Many studies have been conducted to improve travel performance and fuel economy of the environment-friendly vehicles, and vehicle manufacturers study how to manufacture light-weight vehicles for improving fuel economy for both existing vehicles and environment-friendly vehicles. Exemplary light-weight vehicle technologies include optimal design of vehicle body structure which is a light-weight vehicle method by changing component shapes or layout to optimize the vehicle body structure and the new process technology for using new light-weight and very strong materials Various studies.

• Steel and Composite Structures
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• v.45 no.6
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• pp.877-894
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• 2022

Geopolymer concrete (GPC) has emerged as a feasible choice for construction materials as a result of the environmental issues associated with the production of cement. The findings of this study contribute to the development of machine learning methods for estimating the properties of eco-friendly concrete to help reduce CO₂ emissions in the construction industry. The compressive strength (f_c) of GPC is predicted using artificial intelligence approaches in the present study when ground granulated blast-furnace slag (GGBS) is substituted with natural zeolite (NZ), silica fume (SF), and varying NaOH concentrations. For this purpose, two machine learning methods multi-layer perceptron (MLP) and radial basis function (RBF) were considered and hybridized with arithmetic optimization algorithm (AOA), and grey wolf optimization algorithm (GWO). According to the results, all methods performed very well in predicting the f_c of GPC. The proposed AOA - MLP might be identified as the outperformed framework, although other methodologies (AOA - RBF, GWO - RBF, and GWO - MLP) were also reliable in the fc of GPC forecasting process.