Cost reduction of diaphragm wall excavation using air foam and case record

Hirokazu Akaki, Yoshimasa Kondo, Takashi Nakayama, Hisanaga Naos

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    1 Citation (Scopus)

    Abstract

    A novel stabilizing liquid using air foam rather than bentonite clay slurry, i.e. an air foam suspension method, was employed in order to stabilize the trench wall surface during a diaphragm wall excavation. This method reduces the construction costs of working on an underground diaphragm wall. An air foam suspension is created by mixing excavated soil with air foam made from a surfactant. The performance of the air foam suspension depends on its density and consistency, that is, its table flow value (TF). By comparing the trench stabilization capacity of an air foam suspension with that of bentonite clay slurry in model tests, the performance of air foam suspension was confirmed. A cost evaluation of the use of air foam suspension for diaphragm wall excavation is presented with an actual trial construction case record, which shows the superiority of air foam suspension to bentonite clay slurry as a stabilizing liquid.

    Original languageEnglish
    Title of host publication5th ICEG Environmental Geotechnics: Opportunities, Challenges and Responsibilities for Environmental Geotechnics - Proceedings of the ISSMGE 5th Int. Congress
    Pages685-692
    Number of pages8
    VolumeI
    Publication statusPublished - 2006
    Event5th ICEG Environmental Geotechnics: Opportunities, Challenges and Responsibilities for Environmental Geotechnics - International Society of Soil Mechanics and Geotechnical Engineering's (ISSMGE) 5th International Congress - Cardiff, Wales
    Duration: 2006 Jun 262006 Jun 30

    Other

    Other5th ICEG Environmental Geotechnics: Opportunities, Challenges and Responsibilities for Environmental Geotechnics - International Society of Soil Mechanics and Geotechnical Engineering's (ISSMGE) 5th International Congress
    CityCardiff, Wales
    Period06/6/2606/6/30

    Fingerprint

    diaphragm wall
    Diaphragms
    Cost reduction
    foam
    Excavation
    Foams
    excavation
    air
    Air
    Bentonite
    bentonite
    slurry
    Clay
    clay
    trench
    cost reduction
    liquid
    Liquids
    cost
    model test

    ASJC Scopus subject areas

    • Geotechnical Engineering and Engineering Geology
    • Civil and Structural Engineering
    • Environmental Engineering
    • Waste Management and Disposal

    Cite this

    Akaki, H., Kondo, Y., Nakayama, T., & Naos, H. (2006). Cost reduction of diaphragm wall excavation using air foam and case record. In 5th ICEG Environmental Geotechnics: Opportunities, Challenges and Responsibilities for Environmental Geotechnics - Proceedings of the ISSMGE 5th Int. Congress (Vol. I, pp. 685-692)

    Cost reduction of diaphragm wall excavation using air foam and case record. / Akaki, Hirokazu; Kondo, Yoshimasa; Nakayama, Takashi; Naos, Hisanaga.

    5th ICEG Environmental Geotechnics: Opportunities, Challenges and Responsibilities for Environmental Geotechnics - Proceedings of the ISSMGE 5th Int. Congress. Vol. I 2006. p. 685-692.

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Akaki, H, Kondo, Y, Nakayama, T & Naos, H 2006, Cost reduction of diaphragm wall excavation using air foam and case record. in 5th ICEG Environmental Geotechnics: Opportunities, Challenges and Responsibilities for Environmental Geotechnics - Proceedings of the ISSMGE 5th Int. Congress. vol. I, pp. 685-692, 5th ICEG Environmental Geotechnics: Opportunities, Challenges and Responsibilities for Environmental Geotechnics - International Society of Soil Mechanics and Geotechnical Engineering's (ISSMGE) 5th International Congress, Cardiff, Wales, 06/6/26.
    Akaki H, Kondo Y, Nakayama T, Naos H. Cost reduction of diaphragm wall excavation using air foam and case record. In 5th ICEG Environmental Geotechnics: Opportunities, Challenges and Responsibilities for Environmental Geotechnics - Proceedings of the ISSMGE 5th Int. Congress. Vol. I. 2006. p. 685-692
    Akaki, Hirokazu ; Kondo, Yoshimasa ; Nakayama, Takashi ; Naos, Hisanaga. / Cost reduction of diaphragm wall excavation using air foam and case record. 5th ICEG Environmental Geotechnics: Opportunities, Challenges and Responsibilities for Environmental Geotechnics - Proceedings of the ISSMGE 5th Int. Congress. Vol. I 2006. pp. 685-692
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