Ube Industries, Ltd., the Port and Airport Research Institute, Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Tokyo Institute of Technology, and Tokyo University of Marine Science and Technology today announced that a joint research group has established a method for evaluating the mechanical properties of hardened cement mortar and initiated the first-ever in-situ data measurement. The research project aims to contribute to the construction of deep-sea infrastructure. By collecting data on the hydraulic pressure arising inside of hardened cement mortar at a site on the deep-sea floor, the research is expected to yield useful data for the future development of infrastructure materials for deep-sea applications and the establishment of design methodologies for deep-sea structures.