• Journal of the Korea Institute of Building Construction
• /
• v.3 no.1
• /
• pp.139-146
• /
• 2003

The special requirements of high-performance concrete(HPC) could be enhanced property over others such as compressive strength, durability, and construction practices. In order to satisfy these requirements a series of laboratory trial mixes and following mock-up test of reinforced concrete wall at field were performed in this study. The objective of this study was to quantitatively evaluate the workability, compressive strength, and the increased heat of hydration caused by the increase of the specific weight of cement according to various variables. Six example series designed about a minimum compressive strength of 500kgf/$\textrm{cm}^2$ at 28 days, and an approximately slump and slump flow of 25cm and 60cm respectively were tested. The selection process of the specific weight of water and the percentage of fly-ash transposition determined to be most suitable for the production of HPC is presented in the following paper.

• Advances in concrete construction
• /
• v.1 no.2
• /
• pp.137-149
• /
• 2013

The first part of this two-part paper discussed some basic considerations on bond strength and its effect on strain localization and plastic deformation capacity of cracked structural concrete, and analytically evaluated the impacts of the hardening behavior of reinforcing steel and concrete quality on the basis of the Tension Chord Model. This second part assesses the impacts of the most frequently encountered construction details of existing concrete structures which may not satisfy current design code requirements: bar ribbing, bar spacing, and concrete cover thickness. It further evaluates the impacts of the additional structure-specific features bar diameter and crack spacing. It concludes with some considerations on the application of the findings in practice and an outlook on future research needs.

• Proceedings of the Korean Institute of Building Construction Conference
• /
• 2016.10a
• /
• pp.62-63
• /
• 2016

In addition to the waterproof sheet waterproof objectives that apply to the building roof it is being constructed, including a complex such as insulation performance, root-resistance. However, thermal insulation of the composite waterproofing sheet is an insulating effect a wide variety depending on the specific construction -specific, material and even the effect is this part of the test to the generation when insignificant compared to each other a number of roof insulation effect of the insulation composite waterproof sheet that is currently in effect analysis.

• The Journal of Information Systems
• /
• v.7 no.1
• /
• pp.129-158
• /
• 1998

By investigating various information promotion plans by Taegu Metropolitan City Government, Kyungbuk Provincial Government or by the ministry of Agricultural, Forestry, and Fishery Affairs, this paper intends to analyze current trends of information approached from wider perspective, and to propose multi-layered alternatives which improve informatization promulgation in rural areas of Taegu, Kyungbuk areas. This research proposes following 6 alternatives, as informatization strategies to develop rural economics ; (1) construction of Agricultural Techno Park to advance and develop informatization in rural areas, (2) construction of communication super highway to strengthen information infrastructure, (3) construction of region-specific information system to provide agricultural information unique to its region or areas, (4) provision of agriculture-related information by establishing regional information centers separated by regions like North, South, Eastern regions etc., (5) establishment information, (6) establishment of information gallery of village to provide information needed. And this research also investigates specific contents progresses of various plans by various actors.

• Proceedings of the Korean Institute of Building Construction Conference
• /
• 2022.04a
• /
• pp.125-126
• /
• 2022

Office workers at the architectural design office are under job stress for various reasons such as excessive working hours, friction with the site, and unpredictability of work. This can increase not only the negative image of office workers in the construction industry, but also the avoidance of young manpower in the future. This study investigated the specific purpose of each activity as a problem of job stress relief activities in the architectural design office, and the specific purpose and goal setting of each activity as a way to improve job stress relief activities.

• International conference on construction engineering and project management
• /
• 2015.10a
• /
• pp.554-558
• /
• 2015

With the increasing movement towards sustainable construct on, environmental rating systems (ERSs) came into use in the Middle Eastern (ME) region as similar to many other regions. ERSs were first developed to assess buildings and many ERSs have tended related ERSs. Despite the vast infrastructure development in the ME region and in the United Arab Emirates in particular, there is no understand the regional-specific requirements to attain sustainable construction and infrastructure. Tis research addresses these pags and study the theoretical underpinnings of sustainable infrastructure in the region, to propose a regional-specific, infrastructure-related ERS. This paper examines the underpinning factors of sustainable infrastructure in the UAE through a literature review in order to provide insights to determine criteria and subcriteria for the ERS.

• The Journal of the Korea institute of electronic communication sciences
• /
• v.10 no.9
• /
• pp.1027-1032
• /
• 2015

Using the radio wave, RFID(: Radio Frequency IDentification) wirelessly transmits the unique information saved in a tag attached on the specific object. In the construction area, the trend in using RFID for managing the input and inventory of the construction materials is upward. General management systems for the construction materials have only a function of identifying the tag attached on the construction materials, but the management system with a function of identifying and managing the location information of the construction materials employing RFID, for reusing it, is not actively developed. For the efficient reuse of the construction materials, in this paper, we propose the RFID system with a function of estimating and saving the location information of the specific construction materials, based on the estimated distances between the particular subs and reader. The proposed system consists of RFID reader, distance estimate, communication, and memory units.

• Journal of the Korea Institute of Building Construction
• /
• v.11 no.6
• /
• pp.618-626
• /
• 2011

The characteristics of construction work cause excessive strain on specific body parts of the construction craft workers. However, there are few tools to mane an accurate measurement of the load on the musculoskeletal system, and the musculoskeletal disorders (MSDs) experienced by the workers have not been properly understood. So, there is an urgent need for development of a tool to measure the load on the musculoskeletal system. Therefore, this research aims to develop a musculoskeletal load measuring device for construction workers. In order to eliminate the noise and errors, an accelerometer, gyro sensors and the Kalman Filter are used in the device developed in this research.

• Proceedings of the Korean Institute of Building Construction Conference
• /
• 2014.11a
• /
• pp.90-91
• /
• 2014

Previous research related to the construction schedule management has focused on construction schedule categorization, construction schedule management, and system development to manage construction schedule risks. Therefore this research present quantitively deducing method for managing construction schedule risk. Based on the investigation, this study suggested the probable risk factors and a practical management method, through interviews and discussions with experts. The quantified risks should be adapted for an individually specific projects and managed until the project is complete. To maintain the continuity of schedule risks, the schedule risk management procedures should be controlled during the performance of the construction project.

• International conference on construction engineering and project management
• /
• 2015.10a
• /
• pp.138-141
• /
• 2015

The South Korean construction industry has shown a high proportion of industrial accidents (approximately 28% of whole injuries) and the continuously increasing accident rate. Although many safety research emphasized that the 3E (Enforcement, Education, and Engineering) approach is a potential solution to enhance workplace safety, there should be benefits to consider psychological (i.e., Emotional) effects on the safety performance since most construction works are human-oriented. Thus, understanding construction workers' psychological conditions can be a priority. This research studied the relationships between psychological conditions-which cover stress, personal temperament, emotional disturbance, and drinking habit-and specific safety-related factors including safety motivation and knowledge, and safety performance of individual workers at a construction site. This study conducted a survey of 430 respondents and analyzed the data with the multiple linear regressions. The results imply persistence, trait anxiety, and problem-focused coping style are the critical factors that should be controlled for enhancing jobsite safety. Finally, the research outcomes could be applied to build a strategic safety management plan for a construction manager.