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Geotechnical Engineering and Geoenvironment Lab
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A lab that clarifies how soil and ground work and uses that knowledge to think about infrastructure and the environment.
AboutAbout the lab
Thinking about infrastructure and the environment from how soil and ground work.
The Geotechnical Engineering and Geoenvironment Lab clarifies the phenomena and mechanics occurring in soil and ground, and works on developing and promoting geotechnical and foundation technologies.
Its research focuses mainly on ground structures such as tunnels and river embankments, and it also puts effort into countermeasures against geotechnical hazards caused by heavy rain and earthquakes.
The lab also studies the long-term stability of social infrastructure, monitoring technologies, and efficient maintenance methods.
In recent years, it has turned its attention to green infrastructure that makes use of natural processes, aiming for sustainable, environmentally friendly cities and societies.
Key terms
- Recycled soil
- Soil from construction that has been sorted and treated, and improved after its performance has been verified, so that it can be reused as a construction material
- CCUS
- Technology that captures carbon dioxide and reuses or stores it
- Transportation ground structures
- Embankments, cut slopes, retaining walls, and roadbeds that support roads, railways, and airports
NewsLab news
View More ↗ResearchResearch themes
This lab aims to elucidate the phenomena occurring in soil and ground, and to develop geotechnical and foundation technologies useful for the design, construction, and maintenance of civil engineering structures. On the research introduction page, Professor Kimitoshi Hayano's research is described as covering waste reuse, decarbonization, and infrastructure maintenance.
*Illustrative imageRecycled Soil from Excavated Soil
The lab studies technologies for reusing excavated soil from construction sites, such as construction sludge and excavated mud, as recycled soil. It examines the soil's properties, strength, durability, and environmental safety, and links the results to applications in roads and embankments.
*Illustrative imageSoil Improvement Materials from Industrial By-products
This research uses industrial waste and by-products such as steel slag and coal ash as soil improvement materials for ground improvement. In addition to laboratory tests, the lab advances real-world implementation through demonstration experiments at construction sites and joint research with private companies.
*Illustrative imageCCUS Technology Using Soil
The lab develops CCUS technology, which captures, reuses, and stores carbon dioxide, using soil. It explores ways to promote reactions that absorb and fix CO₂ in soil, and to improve absorption capacity by mixing in improvement materials.
*Illustrative imageKeeping Transportation Ground in Service While Protecting It
The lab develops technologies for maintaining and repairing transportation ground structures, such as embankments, cut slopes, retaining walls, and roadbeds, while they remain in use. It advances monitoring technologies and repair methods through joint research and on-site demonstration tests.
MembersFaculty
Members of the Geotechnical Engineering and Geoenvironment Lab consist of faculty members, researchers, doctoral, master's, and undergraduate students, research students, and secretaries.As of 2025
- ProfessorKimitoshi Hayano
- ProfessorYing Cui
- Associate ProfessorItsuki Sato
VoicesStudent voices
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Report an errorAbout the images
The top and research theme images are illustrative and were not taken at the lab. They are cropped from Wikimedia Commons images. Cropped CC BY-SA images are provided under the same CC BY-SA license as the original (version shown on each line).
- Top image: “Mixing soil samples for geotechnical testing” Nazekkama / CC BY 4.0 (cropped)
- Recycled Soil from Excavated Soil: “Letter Blocks Spelling 'Recycle' in the Woods” Meanwell Packaging / CC BY 2.0 (cropped)
- Soil Improvement Materials from Industrial By-products: “Soil improvement - geograph.org.uk - 4090611” Bob Harvey / CC BY-SA 2.0 (cropped)
- CCUS Technology Using Soil: “Soil profile 0-125cm” Mclund / CC BY 4.0 (cropped)
- Keeping Transportation Ground in Service While Protecting It: “Towards the railway embankment - geograph.org.uk - 7419503” DS Pugh / CC BY-SA 2.0 (cropped)
- Related lab (Coastal and Aquatic Environment Lab (Division II)): “Coastal Erosion-4230, Dingle Peninsula, Co. Kerry, Ireland” Maoileann / CC BY-SA 4.0 (cropped)
- Related lab (Structural Engineering Lab (Division I)): “Cable-stayed bridge in Galați” SqueekRO / CC0 (cropped)
- Related lab (Concrete Lab): “RM 1901 crossing a 1908 cast concrete bridge near Gayndah, one of the first such structure in Queensland” Ellis678 / CC BY-SA 3.0 (cropped)
- Related lab (Transportation and Urban Studies Lab): “Mexico City Light Rail Tasqueña Station 202310” Isaak Granzer / CC BY-SA 4.0 (cropped)
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