ETFE is the abbreviation of Ethylen Tetra Fluoro Etylene, a sort of colorless and transparent granules. The advantage ETFE film has daylight transmission and chemical resistance, the aging resistance and lightweight. The thickness of ETFE film is used to from 50μm to 300μm and tensile strength of ETFE film changes from 40MPa to 60MPa and the tensile strain at break can get to about 300-400%. In this paper, ETFE film carried out the tensile proprieties, such as the tensile strain at break, the tensile strength are examined.

A massive concrete structure has a lot of micro-cracks due to the hydration heat. In general, conventional electric sensors have a certain limit in measuring cracks because of the noise. The durability is also badly influenced by corrosion. Recently, optical fiber sensors have demonstrated their superiority over conventional sensors and are able to solve these problems. Thus, in this work, embedded Fiber Bragg Grating (FBG) sensors for measurement of cracks in massive concrete due to hydration heat are developed and investigated. The developed sensor has the potential to perform strain measurement under harsh conditions in the presence of electrical noise and electromagnetic interference. Particularly, these FBG strain sensors are easily installed and found to be durable for massive concrete structures such as dams, bridges, nuclear structures, etc.

In this research, a study is made on the production and manufacturing process of the WPC unit member with 70% of wooden fiber contents, and described the productivity and durability of various modules based on factory-production-and-assembly-at-site system. Further, the study explained about the basic manufacturing process of eco-friendly highly filled extrusion-formed WPC, its unitification and material and mechanical characteristics.

With the current emphasis on building energy use and CO2 emission reduction, this study sought to compare the energy and environmental pollution items of South Korea’s green building certification system (GBCS) and the U.S. LEED system, with a view to exploring South Korea’s GBCS development direction. The conclusions of this study are as follows. First, South Korea’s GBCS is led by the government while the U.S.’s LEED system is led by the private sector. Second, South Korea requires preliminary certification and main certification while LEED requires main certification. Third, the South Korean evaluation is based on the final score allotment while the LEED evaluation consists of prerequisite and credit items..