Fincone: A study on the use of CPT in soft sensitive clays

T. Länsivaara; B. Di Buò; J. Selänpää; M. Knuuti; M. Haikola

doi:10.1201/9781003308829-70

Fincone: A study on the use of CPT in soft sensitive clays

T. Länsivaara, B. Di Buò, J. Selänpää, M. Knuuti, M. Haikola

Civil Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Scientific › peer-review

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Abstract

The paper presents the results of a recent study on the application of CPTU on soft sensitive Finnish clays. An extensive field and laboratory investigation program was carried out, including 9 test sites of which 5 were studied in more detail. In each of the test sites, a minimum of 4 CPTU soundings, 2-3 field vane test with a new type of down hole vane, sampling with a newly developed large diameter tube sampler and an extensive laboratory investigation program were carried out. Transformation models were developed to estimate the undrained shear strength, preconsolidation stress, and constrained modulus for the over consolidated region. In addition, new information about anisotropy of Finnish clays were obtained. In general, the CPTU tests proved to be very reliable with very good repeatability. However, the measurement of sleeve friction proved to be somewhat problematic for the very soft and sensitive clays studied.

Original language	English
Title of host publication	Cone Penetration Testing 2022 - Proceedings of the 5th International Symposium on Cone Penetration Testing, CPT 2022
Editors	Guido Gottardi, Laura Tonni
Publisher	CRC Press/Balkema
Pages	497-502
Number of pages	6
ISBN (Print)	9781032312590
DOIs	https://doi.org/10.1201/9781003308829-70
Publication status	Published - 2022
Publication type	A4 Article in conference proceedings
Event	International Symposium on Cone Penetration Testing - Bologna, Italy Duration: 8 Jun 2022 → 10 Jun 2022 Conference number: 5 https://cpt22.org/

Publication series

Name	Cone Penetration Testing 2022 - Proceedings of the 5th International Symposium on Cone Penetration Testing, CPT 2022

Conference

Conference	International Symposium on Cone Penetration Testing
Abbreviated title	CPT’22
Country/Territory	Italy
City	Bologna
Period	8/06/22 → 10/06/22
Internet address	https://cpt22.org/

Publication forum classification

Publication forum level 1

ASJC Scopus subject areas

General Materials Science

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https://urn.fi/URN:NBN:fi:tuni-202302072116Licence: CC BY-NC-ND

Cite this

Länsivaara, T., Di Buò, B., Selänpää, J., Knuuti, M., & Haikola, M. (2022). Fincone: A study on the use of CPT in soft sensitive clays. In G. Gottardi, & L. Tonni (Eds.), Cone Penetration Testing 2022 - Proceedings of the 5th International Symposium on Cone Penetration Testing, CPT 2022 (pp. 497-502). (Cone Penetration Testing 2022 - Proceedings of the 5th International Symposium on Cone Penetration Testing, CPT 2022). CRC Press/Balkema. https://doi.org/10.1201/9781003308829-70

Länsivaara, T. ; Di Buò, B. ; Selänpää, J. et al. / Fincone : A study on the use of CPT in soft sensitive clays. Cone Penetration Testing 2022 - Proceedings of the 5th International Symposium on Cone Penetration Testing, CPT 2022. editor / Guido Gottardi ; Laura Tonni. CRC Press/Balkema, 2022. pp. 497-502 (Cone Penetration Testing 2022 - Proceedings of the 5th International Symposium on Cone Penetration Testing, CPT 2022).

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abstract = "The paper presents the results of a recent study on the application of CPTU on soft sensitive Finnish clays. An extensive field and laboratory investigation program was carried out, including 9 test sites of which 5 were studied in more detail. In each of the test sites, a minimum of 4 CPTU soundings, 2-3 field vane test with a new type of down hole vane, sampling with a newly developed large diameter tube sampler and an extensive laboratory investigation program were carried out. Transformation models were developed to estimate the undrained shear strength, preconsolidation stress, and constrained modulus for the over consolidated region. In addition, new information about anisotropy of Finnish clays were obtained. In general, the CPTU tests proved to be very reliable with very good repeatability. However, the measurement of sleeve friction proved to be somewhat problematic for the very soft and sensitive clays studied.",

author = "T. L{\"a}nsivaara and {Di Bu{\`o}}, B. and J. Sel{\"a}np{\"a}{\"a} and M. Knuuti and M. Haikola",

note = "Funding Information: The financial support of the Finnish Transport Agency and Tampere University is highly appreciated in carrying out the study. Publisher Copyright: {\textcopyright} 2022 the Author(s).; International Symposium on Cone Penetration Testing, CPT{\textquoteright}22 ; Conference date: 08-06-2022 Through 10-06-2022",

year = "2022",

doi = "10.1201/9781003308829-70",

language = "English",

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series = "Cone Penetration Testing 2022 - Proceedings of the 5th International Symposium on Cone Penetration Testing, CPT 2022",

publisher = "CRC Press/Balkema",

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}

Länsivaara, T, Di Buò, B, Selänpää, J, Knuuti, M & Haikola, M 2022, Fincone: A study on the use of CPT in soft sensitive clays. in G Gottardi & L Tonni (eds), Cone Penetration Testing 2022 - Proceedings of the 5th International Symposium on Cone Penetration Testing, CPT 2022. Cone Penetration Testing 2022 - Proceedings of the 5th International Symposium on Cone Penetration Testing, CPT 2022, CRC Press/Balkema, pp. 497-502, International Symposium on Cone Penetration Testing, Bologna, Italy, 8/06/22. https://doi.org/10.1201/9781003308829-70

Fincone: A study on the use of CPT in soft sensitive clays. / Länsivaara, T.; Di Buò, B.; Selänpää, J. et al.
Cone Penetration Testing 2022 - Proceedings of the 5th International Symposium on Cone Penetration Testing, CPT 2022. ed. / Guido Gottardi; Laura Tonni. CRC Press/Balkema, 2022. p. 497-502 (Cone Penetration Testing 2022 - Proceedings of the 5th International Symposium on Cone Penetration Testing, CPT 2022).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Scientific › peer-review

TY - GEN

T1 - Fincone

T2 - International Symposium on Cone Penetration Testing

AU - Länsivaara, T.

AU - Di Buò, B.

AU - Selänpää, J.

AU - Knuuti, M.

AU - Haikola, M.

N1 - Conference code: 5

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N2 - The paper presents the results of a recent study on the application of CPTU on soft sensitive Finnish clays. An extensive field and laboratory investigation program was carried out, including 9 test sites of which 5 were studied in more detail. In each of the test sites, a minimum of 4 CPTU soundings, 2-3 field vane test with a new type of down hole vane, sampling with a newly developed large diameter tube sampler and an extensive laboratory investigation program were carried out. Transformation models were developed to estimate the undrained shear strength, preconsolidation stress, and constrained modulus for the over consolidated region. In addition, new information about anisotropy of Finnish clays were obtained. In general, the CPTU tests proved to be very reliable with very good repeatability. However, the measurement of sleeve friction proved to be somewhat problematic for the very soft and sensitive clays studied.

AB - The paper presents the results of a recent study on the application of CPTU on soft sensitive Finnish clays. An extensive field and laboratory investigation program was carried out, including 9 test sites of which 5 were studied in more detail. In each of the test sites, a minimum of 4 CPTU soundings, 2-3 field vane test with a new type of down hole vane, sampling with a newly developed large diameter tube sampler and an extensive laboratory investigation program were carried out. Transformation models were developed to estimate the undrained shear strength, preconsolidation stress, and constrained modulus for the over consolidated region. In addition, new information about anisotropy of Finnish clays were obtained. In general, the CPTU tests proved to be very reliable with very good repeatability. However, the measurement of sleeve friction proved to be somewhat problematic for the very soft and sensitive clays studied.

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DO - 10.1201/9781003308829-70

M3 - Conference contribution

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SN - 9781032312590

T3 - Cone Penetration Testing 2022 - Proceedings of the 5th International Symposium on Cone Penetration Testing, CPT 2022

SP - 497

EP - 502

BT - Cone Penetration Testing 2022 - Proceedings of the 5th International Symposium on Cone Penetration Testing, CPT 2022

A2 - Gottardi, Guido

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PB - CRC Press/Balkema

Y2 - 8 June 2022 through 10 June 2022

ER -

Länsivaara T, Di Buò B, Selänpää J, Knuuti M , Haikola M. Fincone: A study on the use of CPT in soft sensitive clays. In Gottardi G, Tonni L, editors, Cone Penetration Testing 2022 - Proceedings of the 5th International Symposium on Cone Penetration Testing, CPT 2022. CRC Press/Balkema. 2022. p. 497-502. (Cone Penetration Testing 2022 - Proceedings of the 5th International Symposium on Cone Penetration Testing, CPT 2022). doi: 10.1201/9781003308829-70

Fincone: A study on the use of CPT in soft sensitive clays

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