• Title/Summary/Keyword: bricks

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Augmented Reality based Application for Assembly of Creativity Education Building Bricks (증강현실 기반의 창의교육용 블록 조립 교육 애플리케이션)

  • Son, Jonghee;Kim, Dongho
    • Proceedings of the Korea Information Processing Society Conference
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    • 2016.04a
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    • pp.353-356
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    • 2016
  • 최근 스마트폰 등 모바일 기기의 발전과 보급은 더욱 다양한 분야에 걸쳐 증강현실 기술을 적용할 수 있도록 하고 있다. 특히 증강현실 이용 방법의 한 가지는 전통적인 수업 방식에서 탈피한 e-learning, e-training을 들 수 있다. 증강현실의 가장 큰 특징은 실제 존재하는 사물이나 풍경 위에 가상의 이미지를 덧씌워 사용자에게 정보를 더해주는 것이다. 이를 통해 더욱 현실감 있는 정보를 전달할 수 있고, 새로운 사용자 경험을 제공하는 교육 시스템을 제공할 수 있다. 이 논문에서는 증강현실을 이용하여 실시간으로 창의적 조형이 가능한 교육용 블록의 위치를 인식하여 모바일 기기를 통해 블록 조립 방법에 대한 안내를 제공하는 모바일 애플리케이션을 제안한다.

Experimental and numerical studies on the frame-infill in-teraction in steel reinforced recycled concrete frames

  • Xue, Jianyang;Huang, Xiaogang;Luo, Zheng;Gao, Liang
    • Steel and Composite Structures
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    • v.20 no.6
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    • pp.1391-1409
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    • 2016
  • Masonry infill has a significant effect on stiffness contribution, strength and ductility of masonry-infilled frames. These effects may cause damage of weak floor, torsional damage or short-column failure in structures. This article presents experiments of 1/2.5-scale steel reinforced recycled aggregates concrete (SRRC) frames. Three specimens, with different infill rates consisted of recycled concrete hollow bricks (RCB), were subjected to static cyclic loads. Test phenomena, hysteretic curves and stiffness degradation of the composite structure were analyzed. Furthermore, effects of axial load ratio, aspect ratio, infill thickness and steel ratio on the share of horizontal force supported by the frame and the infill were obtained in the numerical example.

Effect of Adding Gypsum in Blast-Furnace-Based Mortar's Fundamental Properties (이수석고가 고로슬래그 미분말 활용 무시멘트 모르타르의 기초물성에 미치는 영향)

  • Lu, Liang Liang;Kim, Jun Ho;Park, Jun Hee;Huang, Jin Guang;Baek, Byung Hoon;Han, Cheon Goo
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2013.11a
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    • pp.137-138
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    • 2013
  • Nowadays, research about using recycled aggregate as alkali activator has been investigated. By the mechanism of Alkali activation, blast furnace slag's potential hydraulis property would be activated. Thee application of this technique is considered as fit for low strength concrete, so it's suitable in concrete secondary production such as bricks and blocks. Aside alkali activator, sulfate could also activate blast furnace slag's potential hydranlis property. In this research, gypsum(CaSO4·2H2O)has been added with blast furnace slag. Fundamental experiment such as flow and strength has been tested to evalnate effect of gypsum's activation property.

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A Study on T-shirt Design Using Doggaebi Pattern

  • Kim, Weol-Kye
    • Journal of Fashion Business
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    • v.13 no.3
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    • pp.77-85
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    • 2009
  • The purpose of this study is to design t-shirts by using doggaebi patterns as traditional cultural products. Byuksa has the meaning of keeping away wicked spirits and to receiving good fortune. Most of the pictures of magpies, tigers, dragons, hawks, and roosters contain the meaning of protection and the doggaebi pattern is a typical Byuksa pattern. By way of example of product development, this study will develop designs by using doggaebi patterns and promote beautiful Korean traditional patterns as well as Korean traditional culture. The reason for choosing the T-shirt is because T-shirts are a basic item that all people have and wear, so Koreans and foreigners get interested in them and buy them. This study presents designs for 5 kinds of t-shirts for adults and another five kinds for kids using doggaebi patterns. This study was limited to the doggaebi pattern, so it is expected more studies about patterns and many cultural products will develop.

A Study on the Strengthening effect of Concrete Reinforcement Bracket on the External Clay Brick Wall (외부치장적벽돌 벽체에 대한 콘크리트 보강브라켓의 보강효과에 관한 연구)

  • Kim, Sun-Woo;Kim, Yang-Jung
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2020.06a
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    • pp.117-118
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    • 2020
  • The masonry structure is constructed by cement mortar binding material of brick objects and uses reinforced hardware (connected hardware or wall tie) together when building. However, over time, the corrosion of reinforced steel and the deterioration of joint mortar as well as bricks cause the risk of collapse. In particular, when the externally decorated brick wall is installed on the concrete girder for each floor, the angle bracket is not constructed or corroded, the full-layer weight load is applied to the wall of 0.5B, which is an example of full-scale or collapse. The purpose of this study is to provide numerical information on the reinforcement design by experimentally studying the structural performance of concrete reinforcement brackets that reinforce the vertical load of the exterior wall.

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Earthquake Behavior Characteristics and Seismic Performance Evaluation of Phayathonzu Temple in Myanmar (미얀마 파야똔주 사원의 지진거동 특성 및 내진성능 평가)

  • Kim, Ho-Soo
    • Journal of Korean Association for Spatial Structures
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    • v.24 no.2
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    • pp.43-52
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    • 2024
  • Phayathonzu temple in Myanmar was made of masonry bricks, and so it was vulnerable to lateral load such as earthquake. Especially, it has many difficulties in structural modeling and dynamic analysis because the discontinuous characteristics of masonry structure should be considered. So, it is necessary to provide the seismic performance evaluation technology through the inelastic dynamic modeling and analysis under earthquake loads for the safety security of masonry brick temple. Therefore, this study analyzes the seismic behavior characteristics and evaluates the seismic performance for the 479 structure with many cracks and deformations. Through the evaluation results, we found out the structural weak parts on earthquake loads.

Interaction Augmented Reality System using a Hand Motion (손동작을 이용한 상호작용 증강현실 시스템)

  • Choi, Kwang-Woon;Jung, Da-Un;Lee, Suk-Han;Choi, Jong-Soo
    • Journal of Korea Multimedia Society
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    • v.15 no.4
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    • pp.425-438
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    • 2012
  • In this paper, We propose Augmented Reality (AR) System for the interaction between user's hand motion and virtual object motion based on computer vision. The previous AR system provides inconvenience to user because the users have to control the marker and the sensor like a tracker. We solved the problem through hand motion and provide the convenience to the user. Also the motion of virtual object using a physical phenomenon gives a reality. The proposed system obtains geometrical information by the marker and hand. The system environments like virtual space of moving virtual ball and bricks are made by using the geometrical information and user's hand motion is obtained from the hand's information with extracted feature point through the taping hand. And it registers a virtual plane stably by getting movement of the feature points. The movement of the virtual ball basically is parabolic motion with a parabolic equation. When the collision occurs either the planes or the bricks, we show movement of the virtual ball with ball position and normal vector of plane and the ball position is faulted. So we showed corrected ball position through experiment. and we proved that this system can replaced the marker system to compare to jitter of augmented virtual object and progress speed with it.

Evaluation of the Physical Properties for Lightweight Bricks Made from Sewage Sludge and Wasted Glass (하수슬러지로 제조한 경량 벽돌의 물성평가)

  • Jeong, Jae-Ah;Son, Yeong-Geum;Lee, Woo-Keun
    • Journal of Korean Society of Environmental Engineers
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    • v.35 no.11
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    • pp.781-784
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    • 2013
  • Ocean dumping of sewage sludge is banned. Therefore, it is needed to develop alternative treatment method. Sewage sludge and waste glass are used to prepare lightweight brick. Large amount of energy is consumed to prepare building material, because of its high preparation temperature, or above $1,200^{\circ}C$. We study to prepare lightweight brick, using sewage sludge and waste glass as raw materials in this research. Lightweight brick was made at low temperature of below $800^{\circ}C$ to reduce $CO_2$ emission by geopolymer technique. Calcination temperature, mixing ratio of sewage sludge/waste glass and water glass/water were discussed to evaluate their effect on the brick prepared. In this study, the optimal conditions for preparing bricks was $750^{\circ}C$ of firing temperature, 1.5 of mixing ratio for water glass/water and 10 : 90 wt% of sewage sludge/waste glass. At this condition, compressive strength and specific gravity of brick prepared were 5.1 MPa and 0.46, respectively. These values satisfy the criteria on a lightweight brick.

A Comparison of Characteristics between Danish and Korean Farmhouses -In Reference to Farmhouse Plans, Use of Rooms including Furniture Arrangement, and Building Materials-

  • Choi, Jung-Shin
    • International Journal of Human Ecology
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    • v.8 no.1
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    • pp.67-78
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    • 2007
  • The aim of this paper was to compare differences and similarities of farmhouses between Denmark and Korea as a cross-cultural study. Farmhouses built during the 18th and 19th centuries in Denmark, and ones from Chosun Dynasty (AD. 1392-1910) in Korea were targets of this study. Literature study and field trips to districts and open-air museums in both countries were used. Field trips were carried out during summer of 2005 in Denmark, and fall of 2005 in Korea. Detailed comparisons focused on farmhouse plans, the use of rooms and furnishing, and building materials. As a conclusion, some differences were found between the two countries. In terms of farmhouse plans, square types with four wings, and parallel types were the most frequent forms in Denmark, while a few types, such as the "I", "L", "U" shapes and square types, were more frequently found in Korea. In Denmark, the most important room was the dwelling-room, in which daily family life took place. Every member of the family slept, ate, and worked here, and kept geese and young animals during the winter season. Therefore, this room was laid out in the center of the house. However, Anbang, the most important room in Korea, was not situated in the best part of the house. Instead, the Daechung-maru occupied the center and the best place because the daechung-maru, in which the ancestral ceremony was held, was thought of as more important than a place for live people. Also the use of rooms and furnishing was quite different between the two countries, reflecting each life style. Danish furnishings represented practical daily life, while Korean furnishings reflected more conceptual aspects. It might have resulted from Confucianism in the Chosun Dynasty, which ruled daily life and even influenced use of rooms and furnishings. In other word, philosophy influenced common peoples' daily life and living environment. With reference to building materials, there was rarely a difference between the two countries. Major materials for farmhouse were quite common, such as half-timbering wood and clay, but the difference was in bricks and roof coverings. Bricks were rarely used in Korean farmhouses, while rice-straw was rare for the roof of a Danish farmhouse. Of course, the choice of materials was strongly affected by the local surroundings and overall environment. This result can give some clues for design ideas when architects and interior designers plan housing that is adapted for local peoples. This kind of cross-cultural study can also contribute to one's understanding of foreign culture, especially in housing and culture. And, it can broaden one's insight of design ideas for designers who have to compete frequently with designers in foreign countries.

Application of Magnetic Methods for finding the Egyptian archaeological features

  • Abdallatif Tareq Fahmy;Suh Mancheol;El-All Esmat Abd
    • 한국지구물리탐사학회:학술대회논문집
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    • 2004.08a
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    • pp.157-179
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    • 2004
  • The application of magnetic method for archaeoprospection has been carried out through two archaeological areas in Egypt, Abydos and Abu Sir, In order to find out tile ancient Egyptian archaeological features. The magnetic work at the selected archaeological site of Abydos area was carried out by gradiometer survey, while magnetic work at the selected archaeological site of Abu Sir area was carried out by gradiometer survey and magnetic susceptibility measurements. A gradiometer survey with raster of 0.5 m/0.5 m has been carried out on a surface area of $9600 m^2$ at Abydos area to relocate the buried Solar Boats. The magnetic data were processed using Geoplot software to treat the field noises and enhance the quality of the obtained images. The final magnetic images indicate the existence of 12 Solar Boats as well as tombs, remains of ancient rooms and walls. All of them are expected to belong to the Middle Kingdom, particularly from the 18th to 20th Dynasties. Two magnetic tools have been applied over a selected site of $25600 m^2$ at Abu Sir area in order to detect the hidden archaeological features nearby the Sun Temple. The acquisition of the magnetic data was initiated by the measurements of the topsoil magnetic susceptibility of 272 samples collected from the whole studied area, and then followed by the gradiometer survey to measure tile vertical gradient of the geomagnetic field over an area of $14400 m^2$. The magnetic susceptibility results show the presence of high concentration at the middle part of the study area with a little extension to the south western side, with maximum value of about $36{\times}10^5$ SI. They may indicate the proximity of ritual monuments. Also, they offered the site of interest for carrying out a gradiometer survey. The gradiometer results show tile existence of numerous distributed archaeological features made of mud-bricks with different shapes and sizes. They may indicate tombs, burial rooms, dissected walls; all of them are expected to belong to the 5th Dynasty of pharaohs, who used to build their buildings by mud bricks. The depth of the expected buried archaeological features has been estimated from tihe gradiometer. It is around 1.2m for deep features and 0.42 m for shallow features.

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