Abstract
Recently, impact to society by global warming is attracting greater attention in all the world. It is afraid that the global warming is bringing sea-level rising and increases of heavy raining and storm. The IPCC prefigures that the maximum amount of rising sea-level due to global warming will be 59 cm. It is also prefigured that brackish-region in rivers will expand by running of seawater to the upside of rivers. If the above phenomenon will appear, it is afraid that levees and riverbanks made by soil material are affected by seawater. From the background, it is required to evaluate vulnerability of levees and riverbanks as infrastructures in Japan. This study investigates changes of properties of soil materials, which is used to construct levees and riverbanks, by water chemistry in laboratory. The laboratory experiments use the distilled water assuming fresh-water, and the artificial seawater assuming brine-water and brackish-water. From the laboratory experiments, this study evaluates vulnerability of levees and riverbanks as infrastructures by sea-level rising due to global warming.
