Paraffin kinds of organic PCM has generally been used concerning for instability of phase change and corrosion of materials in concrete containing PCM. Even though paraffin kinds of organic PCM have various kinds and rule considering mix proportions. This study shows a review of paraffin kinds of organic PCM about mechanical properties according to PCM materials and mix proportions. The paper will help to get the basis of information considering compressive reduction ratio.

Besides its exceptional resistance to corrosion, Fiber Reinforced Polymers (FRP) present the advantage to develop high strength compared to its self-weight which highlighted it recently as a material that can replace fairly classical construction materials like steel and concrete. The emergence of glass fiber and the development of resin fabrication technology made it possible to reduce significantly the costs of FRP material and the emphasis given on the importance of life cycle cost (LCC) for structures after the 1980s opened its exploitation in the construction domain. In this paper, research trends of structural member development which is related to FRP material are briefly suggested.