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

Hirokazu Akagi; Yoshimasa Kondo; Takashi Nakayama; Hisanaga Naos

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

Hirokazu Akagi^*, Yoshimasa Kondo, Takashi Nakayama, Hisanaga Naos

^*Corresponding author for this work

School of Creative Science and Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

3 Citations (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 language	English
Title of host publication	5th ICEG Environmental Geotechnics
Subtitle of host publication	Opportunities, Challenges and Responsibilities for Environmental Geotechnics - Proceedings of the ISSMGE 5th Int. Congress
Pages	685-692
Number of pages	8
Publication status	Published - 2006 Dec 1
Event	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, United Kingdom Duration: 2006 Jun 26 → 2006 Jun 30

Publication series

Name	5th ICEG Environmental Geotechnics: Opportunities, Challenges and Responsibilities for Environmental Geotechnics - Proceedings of the ISSMGE 5th Int. Congress
Volume	I

Conference

Conference	5th ICEG Environmental Geotechnics: Opportunities, Challenges and Responsibilities for Environmental Geotechnics - International Society of Soil Mechanics and Geotechnical Engineering's (ISSMGE) 5th International Congress
Country/Territory	United Kingdom
City	Cardiff, Wales
Period	06/6/26 → 06/6/30

ASJC Scopus subject areas

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

Cite this

Akagi, 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 (pp. 685-692). (5th ICEG Environmental Geotechnics: Opportunities, Challenges and Responsibilities for Environmental Geotechnics - Proceedings of the ISSMGE 5th Int. Congress; Vol. I).

Cost reduction of diaphragm wall excavation using air foam and case record. / Akagi, Hirokazu; Kondo, Yoshimasa; Nakayama, Takashi et al.
5th ICEG Environmental Geotechnics: Opportunities, Challenges and Responsibilities for Environmental Geotechnics - Proceedings of the ISSMGE 5th Int. Congress. 2006. p. 685-692 (5th ICEG Environmental Geotechnics: Opportunities, Challenges and Responsibilities for Environmental Geotechnics - Proceedings of the ISSMGE 5th Int. Congress; Vol. I).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Akagi, 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. 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, United Kingdom, 06/6/26.

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

Akagi, Hirokazu ; Kondo, Yoshimasa ; Nakayama, Takashi et al. / 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. 2006. pp. 685-692 (5th ICEG Environmental Geotechnics: Opportunities, Challenges and Responsibilities for Environmental Geotechnics - Proceedings of the ISSMGE 5th Int. Congress).

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

Abstract

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ASJC Scopus subject areas

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