固化材として酸化マグネシウムを用いた組積耐カ壁用非焼成土ブロックに関する研究

摘要

In order to address global environmental problems, the use of earth material has many environmental advantages. This paper proposes the use of non-burnt earth block, stabilized with magnesium oxide (MgO), as the masonry unit for load bearing wall. This study puts its focus on making mechanism that can find the possible mix proportion of earth block that satisfy the required quality and manufacturing conditions. It was found that the hardening mechanism of MgO is due to the formation of magnesium hydroxide, and the water MgO ratio influences the compressive strength. Furthermore, some properties of the earth block depend on the proportions of the fine particle, MgO and water. These relations of properties and mix proportions were also confirmed in the experiment that used other kinds of clay sampled from different areas.%地球環境問題の是正の観点から、建設産業においても省資源•省 エネルギー、廃棄物削減などに対し、相当程度の取組みがなされて いるが、その抜本的な解決にはほど遠い。このような状況の下、土 素材は、资源枯渴の心配がなく、廃棄の際も土壌汚染などの心配が 少ないなど、環境優位性の高い素材である。