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

Tsutomu Namikawa, Junichi Koseki

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

There exist differences in the values of the tensile strength of cement-treated soils among results from direct tension, splitting tension, and bending tests. This paper presents numerical simulations that serve to explain such differences in the tensile strength properties obtained from the three types of tests. Finite element (FE)-analyses were performed to simulate the three tests as boundary value problems. A simple elasto-plastic model that simulates the behavior of cement-treated sands under a general three-dimensional stress state was used for these analyses. The analytical results showed that the direct tension tests yield reliable values of the actual tensile strength that will be mobilized under an ideal condition of uniaxial tension. On the other hand, in the splitting tension and bending tests, the tensile strength values are calculated from an external load by assuming a linear-elastic behavior in estimating the stress distribution. However, these values do not correspond to the actual tensile strength. The splitting tensile tests underestimate the tensile strength because the shear failure occurs below the loading strip and restrains further increase of the applied load. On the other hand, the bending tests overestimate the tensile strength because of the redistribution of stresses induced by the strain-softening behavior on the tensile side.

Original languageEnglish
Pages (from-to)657-674
Number of pages18
JournalSoils and Foundations
Volume47
Issue number4
Publication statusPublished - 2007
Externally publishedYes

Fingerprint

tensile strength
Cements
cement
Tensile strength
Sand
sand
Bending tests
Soil cement
laboratory test
evaluation
test
softening
Boundary value problems
Stress concentration
Loads (forces)
plastic
Plastics
Computer simulation
simulation
soil

Keywords

  • Bending test
  • Cement-treated sand
  • Direct tension test
  • Finite element method
  • Splitting tension test
  • Tensile strength (IGC: El)

ASJC Scopus subject areas

  • Geotechnical Engineering and Engineering Geology
  • Civil and Structural Engineering

Cite this

Evaluation of tensile strength of cement-treated sand based on several types of laboratory tests. / Namikawa, Tsutomu; Koseki, Junichi.

In: Soils and Foundations, Vol. 47, No. 4, 2007, p. 657-674.

Research output: Contribution to journalArticle

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