This reasearch was performed to evaluate CO2 emission of Modular bridge quantitatively. Preferentially, Modular bridge was separated steel girder bridges, concrete girder, concrete slab bridge and analyzed process in doing configuration W.B.S system. According to the Ministry of land guidelines, each process was divided into material, transportation, construction and calculated by division in detail the materials and fuel so it planned that quantitative assessment can be achieved.

Transverse joints on upper flange of modular T-shaped girder bridge are composed of lapped splice and in-situ high strength concrete. Optimal shape induced by finite element analysis through the shape parameters.

During modular bridge construction, the construction delay and the problems of workability due to the high-altitude operations are occurred by using in-site concrete diaphragm. To solve these problems, selected alternative suitable for modular bridge diaphragm is needed. Therefore, in this study, to select the suitable diaphragm for modular PSC T-Girder bridge, seven diaphragm specimens were fabricated and static loading tests were carried out. Through the static load tests, the behavior of diaphragm in terms of joints and load distribution was observed and experimental results were analyzed and compared with each data. Finally, the alternative of suitable diaphragm for modular PSC T-Girder bridge was proposed considering the structural performance and workability.

This research was performed to evaluate physical properties of polysulfide epoxy overlay material for bridge deck, as part of a review for possibility of domestic of epoxy polymer concrete binder for thin bridge deck pavements. After mix test, carry out experiment such as harden, viscosity, tensile, compressive strength and Ultraviolet ray test for evaluate strength and durability characteristics. The tests showed that the results, met the criteria suggested by the ACI in hardness, viscosity, tensile strength and compressive strength. Furthemore, a comparsion of the in this study and goods of Transpo.co in USA, this study were excellent.

Recently, prefabricated bridge is studied actively to reduce the term of works. However, most of the research is limited to the primary structures like piers, girders and decks, etc, not to facilities like bridge rails or curbs. In this study, curb model and settling method for steel bridge rails suitable for prefabricated bridges were proposed along with verifying structural performance according to highway bridge standard specifications.

The purpose of this study is to propose the decision making code of need for repair and strengthening in concrete bridges. First, to propose the decision making code, the guidelines and codes for a decision making of repair and strengthening and state assesment in United States and Japan were investigated and analyzed. Based on the investigated and analysis data, The decision making code of need for repair and strengthening that is divided into seven kinds of deterioration and damage is proposed. Through the proposed codes, rational and objective decision making of need for repair and strengthening is expected.

In this study, we proposed a connection system using bolts on concrete barrier applicable to prefabricated bridges. Static tests were performed for evaluating the structural performance of connection system. With variables of connection type, vertical bolts, we made cast-in-place concrete barrier and prefabricated barrier to derive the relative comparison experiments.

The main objective of this paper is to investigate the static behavior of a prestressed concrete (PSC) girder. The monolithic girder has the same geometric and material properties with respect to the splice girder. In this study transverse prestressing method was treated to connect girders as an application of modular technology, and various experiments were performed to measure a connection capacity and to evaluate structural behaviors between double T-girder.