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Research Output 1994 2019

  • 183 Citations
  • 8 h-Index
  • 37 Article
  • 8 Conference contribution
  • 1 Conference article
2019

Evaluation of statistical uncertainty of cement-treated soil strength using Bayesian approach

Namikawa, T., 2019 Jan 1, (Accepted/In press) In : Soils and Foundations.

Research output: Contribution to journalArticle

Soil cement
soil strength
cement
Quality assurance
deep mixing method
2018

Unconfined compression behavior of cement-treated sample composed of various strength parts

Namikawa, T. & Nakashima, Y., 2018 Jan 1, In : Zairyo/Journal of the Society of Materials Science, Japan. 67, 1, p. 42-46 5 p.

Research output: Contribution to journalArticle

Soil cement
cements
Cements
Compaction
soils
2017

Cyclic Unconfined Compression Test of Cement-Treated Soils

Namikawa, T., Suzuki, Y., Onimaru, S., Tsukamoto, T., Kurosawa, R. & Shimada, K., 2017 Jan 1, In : Geotechnical Special Publication. 289 GSP, p. 259-268 10 p.

Research output: Contribution to journalConference article

Soil cement
Linear regression
cement
compression
loading test
4 Citations (Scopus)

Failure behavior of cement-treated soil under triaxial tension conditions

Namikawa, T., Hiyama, S., Ando, Y. & Shibata, T., 2017, (Accepted/In press) In : Soils and Foundations.

Research output: Contribution to journalArticle

Soil cement
cement
confining pressure
soil
Failure modes
1 Citation (Scopus)

Influence of pulling out existing piles on the surrounding ground

Inazumi, S., Namikawa, T., Kuwahara, S. & Hamaguchi, S. I., 2017, In : International Journal of GEOMATE. 13, 35, p. 16-21 6 p.

Research output: Contribution to journalArticle

Piles
Fillers
Pile foundations
pile
finite element analysis
2 Citations (Scopus)

Literature survey and experimental study on the direct tension test on rocks

Hashiba, K., Okada, T., Tani, K., Shirasagi, S., Hayano, K., Nakamura, T., Oikawa, Y., Ono, M., Shimamoto, K., Yamada, S., Wakabayashi, N., Namikawa, T. & Nishikane, Y., 2017 Mar 1, In : Geotechnical Testing Journal. 40, 2, p. 335-344 10 p.

Research output: Contribution to journalArticle

Tensile strength
experimental study
Rocks
Stress-strain curves
rock
2016
14 Citations (Scopus)

Conditional probabilistic analysis of cement-treated soil column strength

Namikawa, T., 2016 Feb 1, In : International Journal of Geomechanics. 16, 1, 04015021.

Research output: Contribution to journalArticle

probability analysis
cement
soil column
finite element analysis
autocorrelation
1 Citation (Scopus)

Statistical analysis for evaluating cyclic strength of cement-treated soils

Namikawa, T., Suzuki, Y., Onimaru, S., Tsukahara, T., Kurosawa, R. & Shimada, K., 2016 Jul 28, (Accepted/In press) In : Soils and Foundations.

Research output: Contribution to journalArticle

Soil cement
loading test
cyclic loading
Regression analysis
Statistical methods
2015

Simulation analysis of grid-form ground improvement for preventing liquefaction among existing small houses

Tsukuni, S. & Namikawa, T., 2015, Computer Methods and Recent Advances in Geomechanics - Proceedings of the 14th Int. Conference of International Association for Computer Methods and Recent Advances in Geomechanics, IACMAG 2014. Taylor and Francis - Balkema, p. 631-636 6 p.

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

ground improvement
Liquefaction
liquefaction
simulation
road
2014
1 Citation (Scopus)
Soil cement
compressive strength
cements
Compressive strength
Cements

Finite element analysis of compression behavior of ground improvement with spatial variability

Namikawa, T., 2014, Geotechnical Safety and Risk IV - Proceedings of the 4th International Symposium on Geotechnical Safety and Risk, ISGSR 2013. p. 169-174 6 p.

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

Soil cement
ground improvement
cement
compression
soil column
2013
28 Citations (Scopus)

Effects of spatial correlation on the compression behavior of a cement-treated column

Namikawa, T. & Koseki, J., 2013, In : Journal of Geotechnical and Geoenvironmental Engineering. 139, 8, p. 1346-1359 14 p.

Research output: Contribution to journalArticle

Autocorrelation
Cements
cement
Compaction
autocorrelation
2012

Characterization of strength variability of cement-treated soil column

T, N., T., N. & Namikawa, T., 2012 Sep 1, In : The 4th Central Asian Geotechnical Symposium. CD ROM

Research output: Contribution to journalArticle

2011

Numerical investigation of spatial distribution of deformation in granular media

Namikawa, T., 2011, Computer Methods for Geomechanics: Frontiers and New Applications. Vol. 1. p. 381-386 6 p.

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

granular medium
Autocorrelation
autocorrelation
Spatial distribution
spatial distribution

Numerical study of failure behavior of cement-treated column with spatial variability

Namikawa, T., 2011, 14th Asian Regional Conference on Soil Mechanics and Geotechnical Engineering.

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

cement
Cements
Soils
soil strength
soil heterogeneity
2010

Behavior of lattice-type ground improvement by cement-mixing for liquefaction mitigation

Koseki, J. & Namikawa, T., 2010, Geotechnical Society of Singapore - International Symposium on Ground Improvement Technologies and Case Histories, ISGI'09. p. 257-262 6 p.

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

ground improvement
Liquefaction
tensile strength
liquefaction
Cements

Mechanical properties and seismic behavior of soil walls using remmed earth technique.

H, A., H., A., J., L., T., S., T., N., J., K. & Namikawa, T., 2010 Jan 1, In : International Symposium on New Technologies for Urban Safety of Mega Cities in Asia. CD ROM

Research output: Contribution to journalArticle

1 Citation (Scopus)

Numerical study of effects of spatial variability on cement-treated column strength

Namikawa, T. & Koseki, J., 2010, Geotechnical Society of Singapore - International Symposium on Ground Improvement Technologies and Case Histories, ISGI'09. p. 419-424 6 p.

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

Autocorrelation
autocorrelation
Cements
cement
compression
2009

Behavior of lattice-type ground improvement by cement-mixing for liquefaction mitigation.

J, K., J., K., T., N. & Namikawa, T., 2009 Dec 1, In : Ground Improvement Technologies and Case Histories. 1, p. 257-262

Research output: Contribution to journalArticle

Numerical study of effects of spatial variability on cement-treated column strength.

T, N., T., N., J., K. & Namikawa, T., 2009 Dec 1, In : Ground Improvement Technologies and Case Histories. 1, p. 419-424

Research output: Contribution to journalArticle

Performance evaluation of lattice-shaped ground improvement for liquefaction mitigation.

T, N., T., N., J., K. & Namikawa, T., 2009 Jun 1, In : Performance-Based Design in Earthquake Geotechnical Engineering. 1, p. 1169-1176

Research output: Contribution to journalArticle

Size effect on bending strength of cement-treated soils.

T, N., T., N., J., K. & Namikawa, T., 2009 May 1, In : Deep Mixing 09. CD ROM

Research output: Contribution to journalArticle

2008
3 Citations (Scopus)

Finite element analysis of a full scale bending test of cement treated soil column

Namikawa, T., Koseki, J. & Suzuki, Y., 2008, 12th International Conference on Computer Methods and Advances in Geomechanics 2008. Vol. 5. p. 3635-3641 7 p.

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

Soil cement
Bending tests
soil column
tensile strength
cement
3 Citations (Scopus)

Fracture zone deformation of cement-treated sand in plane strain compression tests

T, N., T., N., J., K. & Namikawa, T., 2008 Sep 1, In : Deformation Characteristics of Geomaterials. 1, p. 371-376

Research output: Contribution to journalArticle

Shear and tensile properties of cement-treated sands and their applications of liquefaction-induced damage.

J, K., J., K., Y., T., T., N., S., M., R., S-M., Y., S., S., N. & Namikawa, T., 2008 Sep 1, In : Deformation Characteristics of Geomaterials. 1, p. 27-50

Research output: Contribution to journalArticle

2007
27 Citations (Scopus)

Elasto-plastic model for cement-treated sand

Namikawa, T. & Mihira, S., 2007 Jan, In : International Journal for Numerical and Analytical Methods in Geomechanics. 31, 1, p. 71-107 37 p.

Research output: Contribution to journalArticle

Cements
cement
Sand
plastic
Plastics
27 Citations (Scopus)

Elasto-plastic model for cement-treated sand.

T, N., T., N., S., M. & Namikawa, T., 2007 Jan 1, In : International Journal for Numerical and analytical Method in Geomechanics. 30, p. 71-107

Research output: Contribution to journalArticle

21 Citations (Scopus)

Evaluation of tensile strength of cement-treated sand based on several types of laboratory tests

Namikawa, T. & Koseki, J., 2007, In : Soils and Foundations. 47, 4, p. 657-674 18 p.

Research output: Contribution to journalArticle

tensile strength
Cements
cement
Tensile strength
Sand
27 Citations (Scopus)

Finite element analysis of lattice-shaped ground improvement by cement-mixing for liquefaction mitigation

Namikawa, T., Koseki, J. & Suzuki, Y., 2007, In : Soils and Foundations. 47, 3, p. 559-576 18 p.

Research output: Contribution to journalArticle

ground improvement
Liquefaction
liquefaction
Cements
cement
2006

Centrifuge model tests on soil reaction along a pile in a liquefiable sand layer

Namikawa, T., 2006, Physical Modelling in Geotechnics, 6th ICPMG'06 - Proceedings of the 6th International Conference on Physical Modelling in Geotechnics. Vol. 1-2. p. 1029-1035 7 p.

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

Centrifuges
centrifuge
model test
Piles
pile

Centrifuge model tests on soil reaction along a pile in a liquefiable sand layer.

T, N., T., N. & Namikawa, T., 2006 Aug 1, In : The 6th Int. Conf. on Physical Modelling in Geomechnics. p. 1029-1035

Research output: Contribution to journalArticle

12 Citations (Scopus)

Experimental determination of softening relations for cement-treated sand

Namikawa, T. & Koseki, J., 2006 Aug, In : Soils and Foundations. 46, 4, p. 491-504 14 p.

Research output: Contribution to journalArticle

softening
Shear bands
Cements
cement
Sand
2005

Seismic response analysis of lattice-shaped ground improvements.

T, N., T., N., Y., S., J., K. & Namikawa, T., 2005 May 1, In : Deep Mixing 05. p. 263-271

Research output: Contribution to journalArticle

2004

STUDY ON APPLICABILITY OF ELASTO-VISCOPLASTIC MODELS TO MECHANICAL PROPERTIES OF COMPACTED BENTONITE

Namikawa, T., Hirai, T., Tanai, K., Yui, M., Sigeno, Y., Takaji, K. & Ohnuma, M., 2004 Jun 1, In : Doboku Gakkai Ronbunshuu C. 764, p. 367-372

Research output: Contribution to journalArticle

Bentonite
Mechanical properties
Radioactive waste disposal
Constitutive models
2002

Application to building foundation.

T, N., T., N. & Namikawa, T., 2002 Oct 1, In : Tokyo Workshop 2002 on Deep Mixing. p. 233-241

Research output: Contribution to journalArticle

2001
11 Citations (Scopus)
time dependent behavior
plastic
Plastics
Clay
creep
2000

Dynamic centrifuge test of pile foundations structure, Part one : Behavior of free ground during extreme earthquake conditions.

T, N., T., N., K., T., S., N., R., B., T., H. & Namikawa, T., 2000 Feb 1, In : 12th World Conference on Earthquake Engineering. CD ROM

Research output: Contribution to journalArticle

Session and workshop report ; Keynote lecture by Prof. Kimura : Development of geotechnical centrifuges in Japan.

T, N. & Namikawa, T., 2000 Jan 1, In : Centrifuge 98. 2, p. 1039-1040

Research output: Contribution to journalArticle

1994

An Experimental Study on Loading Effect on Bearing Capacity of Footings on Submerged Sand

P, R., P., R., k., K., T., N., T., K. & Namikawa, T., 1994 Jan 1, In : The 9th Japan Earthquake Engineering Symposium, 3. p. E307-E312

Research output: Contribution to journalArticle