본 연구에서는 고압송용 고유동콘크리트 개발을 위한 기초적인 연구의 일환으로 펌프압송시 압송관내 콘크리트가 받는 압력을 재 현할 수 있는 가압장치를 개발하였다. 이를 통하여 펌프압송할 경우 발생되는 품질변화의 원인 중 압력에 의한 단위수량 감소에 중점을 두어 가 압에 따른 콘크리트용 굵은골재의 흡수 특성 및 고유동콘크리트 내부 굵은골재의 흡수 특성을 평가하였으며, 고유동콘크리트의 가압 전·후 압 축강도를 평가하였다. 실험결과, 250 bar의 높은 압력이 작용할 경우 부순굵은골재 및 강자갈의 흡수율은 표건 흡수율 이상으로 증가되지 않는 것으로 나타났으며, 경량굵은골재의 흡수율은 표건 흡수율 이상으로 증가되는 것으로 나타났다.

The aims of this research were to examine whether horticultural activity is appropriate for personality education to prevent reformatory students from redelinquency, to make use of it for developing educational programs and to take advantage of the research as based information. In order to accomplish the purposes, the researches and surveys were taken in four parts targeting 262 reformatory students from five different Youth Detention Centers out of ten centers in the country: simple mental health diagnostic inventory, general characteristics, preferences of personality programs that are currently underway to juvenile delinquents in juvenile protection education institution, and awareness and preference of the plants and horticultural activities. First of all, as a result of simple mental health diagnostic inventory, ‘depression’ appeared to be the highest while ‘hostility’, ‘somatization’, ‘obsessional thinking’, ‘interpersonal sensitivity’, ‘anxiety’ and ‘psychosis’ emerged in the order. Secondly, as a result of preferences of personality programs, ‘social work’ appeared relatively the highest, while ‘Do-dream program’, ‘art therapy’, ‘career exploration’, and ‘sex education’ showed in the order. Thirdly, 53.3% students responded that personality programs through horticultural activities is desirable and 84% appeared that they prefer it. The most preferred plant species were fruit trees (strawberries, apples), flowers (roses, herbs) and vegetables (Scatter cucumbers, tomatoes). The most interesting garden activities were ‘growing (cultivation)’, ‘decorating (decoration and craft)’ and ‘feeling plants (appreciating).’ Therefore, it is well ascertained that juvenile delinquents in juvenile protection education institution consider introducing horticultural programs into personality education positive. Based on these results, it is identified that more various and specialized horticulture programs to prevent reformatory students from redelinquency should be developed for practical use.

This study was evaluated the field applicability of high fluidity concrete for pc sleeper using high volume fly ash.

This paper was examined the flexural performance of HPFRCC according to spraying stage. Through this, it will be utilized as basic research data for development of sprayed HPFRCC for protection and blast resistance of existing structures.

In this paper, analyzed the effect on repair mortar by anhydrite blain, by observing workability.

This study was evaluated compressive strength of fiber reinforcement mortar using basalt fiber as part of a basic study for development to fiber reinforcement mortar using basalt fiber. Results of assessment, influence of the compressive strength according to used superplasticizer (SP) has shown that without, in addition, compressive strength according to used viscosity agent (VA) is determined that the compression strength decreased due to the bubbling.

This paper was examined the compressive strength properties of HPFRCC according to spraying stage as a part of the basic research for development of sprayed HPFRCC for protection and blast resistant of existing structures.

본 논문은 강섬유의 일부를 철근집합체로 대체하여 초고강도 섬유보강 철근 콘크리트 I 형보의 연성거동을 유도하는 것을 목적으 로 한다. 강섬유와 철근집합체의 조합을 가진 초고강도 콘크리트 I 형보 대한 휨거동 실험을 수행하였다. 강섬유의 혼입률은 0%, 0.7%, 1%, 1.5%, 2%이다. 철근집합체와 PS강연선 집합체가 압축구역에서 콘크리트를 구속하기 위해 사용되었다. 철근집합체와 강연선 집합체의 길이 도 실험요소 중 하나이다. 이러한 실험요소를 조합하여 9개의 초고강도 철근 콘크리트 I 형보를 제작하였다. 강섬유 뿐만 아니라 종방향의 철근 집합체도 초고강도 철근 콘크리트 I형 보의 연성거동을 유도하는데 효과를 가지고 있다. 강섬유 혼입률 0.7% 또는 1%와 철근집합체를 사용한 조합이 I형 보의 효과적인 연성 거동을 보여주고 있다. 하중과 처짐관계 및 균열양상 등이 좁은 간격을 가진 작은 직경의 종방향 철근 집합체의 유용성을 나타내고 있다.

The purpose of this study was to investigate the effect of horticultural therapy program focused on indoor activities for cancer patients on post-traumatic growth and self-integrity. Seven cancer patients were participated. Experimental group of 7 members received a horticultural therapy program. And this study was performed from May 12 to June 30 in 2014. As the results, the sub-category of self integrity was not statistically significant, but total self-integrity level of the experimental group increased significantly after horticulture therapy (p=0.042). Post-traumatic growth level of the experimental group increased after horticulture therapy, but it was not statistically significant. Therefore horticultural therapy program focused on indoor activities could be utilized as an appropriate program for increase of self-integrity in cancer patients in future.

This study was investigated the influence of increase in compressive strength according to water reducing ratio. As a result of the analysis, it is determined that compressive strength according to water reducing ratio was increased by increasing the efficiency of cement.

This study was evaluated compressive strength of age 28 days of binary blended concrete according to there type of superplasticizer and there type of w/c. In addition, we are proposed modification prediction model equation that can reflect efficiency of water reducing and influence of binders using Lyse equation to predict the compression strength through the conventional W/C.

This paper was examined the durability properties of concrete using rapid cooling slag as fine aggregate for concrete. The results of experiments, concrete using rapid cooling slag showed that durability properties was equal to concrete using normal fine aggregate.

The construction industry is high risk in all process that are feasibility study, planning and design, construction, occupancy, use, operation and maintenance etc. These days risk are occurring in maintenance stage. In this study evaluated the aging facility after maintenance through simple quality monitoring. The results, That were able to identify the extent maintenance of facility.

A road paved concrete in a runway is happened deterioration by high heat with jet engine and friction that is about 380 ℃. Therefore, In this study tested the heat stress to use section maintenance on a runway of a modification sulfur concrete. The results, compressive strength, bond strength, abrasion resistance and skid resistance has decreased each 17, 15, 56 and 3 percent as heat stress before and after.

In experimental results, the prediction equation for 28 day-strength of GGBF slag concrete could be produced through the linear regression analysis of early strength and 28 day-strength. In order to acquire the reliability, all mixture were repeated as 3 times and each mixture order was carried out by random sampling. The prediction equation for 28 day-strength of GGBF slag concrete by 1 day strength won the good reliability.

본 연구는 경기교육종단연구 데이터를 활용하여 혁신학교 일반학교에 있어서 학교장의 변혁적 리더십이 교사협력과 학교만족도에 미치는 영향과 교사협력이 학교장의 변혁적 리더십과 학교만족도를 매개하는 효과를 분석하였다. 관련된 변인들 간의 구조적 관계와 매개효과, 조절효과 등을 분석하기 위해 AMOS 프로그램을 활용하여 구조방정식 분석을 실시하였다. 분석결과, 혁신학교와 일반학교 모두 학교장의 변혁적 리더십이 교사의 학교만족도와 교사협력에 유의미한 영향을 미치고 있었다. 그러나 리더십이 교사의 학교만족도에는 직접적인 높은 영향력을 나타냈으나 교사협력에는 비교적 낮은 영향력을 보였다. 또한 교사협력이 학교만족에 미치는 영향은 공통적으로 미미하였는데, 이는 교사들의 협력적 교육활동이 학교만족으로 이어질 수 있는 성과를 산출하기 못하거나 학교만족에 영향을 미치는 요인과는 다른 차원에서 교사협력이 이루어지고 있음을 보여준다. 일반학교와 혁신학교에 따른 조절효과는 존재하지 않았으며, 교사협력의 매개효과는 혁신학교에서 나타나지 않았고, 일반학교에서는 부분적으로 매개하는 것으로 나타났다.

This study was evaluated fluidity properties on the performance of fiber dispersion of basalt fiber in mortar matrix as part of a basic study for development to fiber reinforcement mortar using basalt fiber. Results of assessment, fiber dispersion performance of of fiber reinforcement mortar using basalt fiber, showed that viscosity agent is more effective to improve the fluidity and fiber dispersion than superplasticizer.

This paper was examined the mechanical properties of concrete using rapid cooling slag as fine aggregate for concrete. The results of experiments, concrete using rapid cooling slag showed that mechanical properties was equal to concrete using normal fine aggregate.

Purpose: In this study a pilates exercise program using self-efficacy sources was provided for women 65 years of age or older and the effects on physical fitness, body composition, depression, self-efficacy, and health-related quality of life were tested. Methods: A quasi-experimental study employing a nonequivalent control group, pre-post design was conducted. The subjects consisted of 30 older women in the experiment group and 30 in the comparison group. The intervention was conducted twice a week for a period of 12 weeks. During this period, the pilates exercise program using self-efficacy sources (health education, phone coaching, mentoring, checking homework, recreation) were provided in the experiment group and pilates exercise program were offered in the comparison group. Chi-square test, independent t-test, ANCOVA were used for data analysis. Results: Following completion of the program, upper muscle strength (F=4.131, p=.047), low muscle strength (F=5.558, p=.022), upper flexibility (F=5.252, p=.026), static balance (F=5.957, p=.018), dynamic body balance & agility(F=18.971, p<.001), endurance(F=10.058, p=.002), muscle mass (F=5.748, p=.020), depression (F=4.493, p=.038), Self-efficacy (F=33.853, p<.001), and Health-related quality of life(F=5.586, p=.022) were significantly better in the experimental group. Conclusion: Findings from this study indicate that the pilates exercise program using self-efficacy sources are effective in enhancing physical fitness, body composition, self-efficacy and health-related quality of life and in decreasing depression for female elders and could therefore be regarded as positive program for promotion of physical and mental health for older women.