Direct Tensile Properties and Stress-Strain Model of UHP-ECC

Ke Quan Yu, Zhou Dao Lu, Jian Guo Dai*, Surendra P. Shah

*Corresponding author for this work

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

This research developed an ultra-high-performance engineered cementitious composite (UHP-ECC), which combines the properties of strain-hardening, multiple cracking, and high mechanical strength. The compressive strength of the UHP-ECC reached 150 MPa at 28 days under standard curing conditions, whereas the tensile strength and strain capacity of the UHP-ECC were 18 MPa and 8%, respectively. Different fiber volumetric ratios and geometries (fiber length and diameter) were used to investigate the influences of fiber-reinforcement parameters on the mechanical and crack-pattern properties of UHP-ECC, including the tensile strength, strain capacity, strain energy, crack number, and crack spacing. It was found that the fiber reinforcement parameters significantly influence both the mechanical properties and crack-patterns of UHP-ECC. Based on the test results, a bilinear tensile stress-strain model was proposed for UHP-ECC and its accuracy was demonstrated through comparisons with the test results.

Original languageEnglish (US)
Article number04019334
JournalJournal of Materials in Civil Engineering
Volume32
Issue number1
DOIs
StatePublished - Jan 1 2020

Fingerprint

Tensile properties
Tensile stress
Composite materials
Cracks
Fiber reinforced materials
Tensile strength
Fibers
Tensile strain
Strain energy
Strain hardening
Compressive strength
Strength of materials
Curing
Mechanical properties
Geometry

Keywords

  • Crack-pattern
  • Fiber reinforcement
  • Stress-strain model
  • Tensile property
  • Ultrahigh-performance engineered cementitious composite (UHP-ECC)

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Materials Science(all)
  • Mechanics of Materials

Cite this

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abstract = "This research developed an ultra-high-performance engineered cementitious composite (UHP-ECC), which combines the properties of strain-hardening, multiple cracking, and high mechanical strength. The compressive strength of the UHP-ECC reached 150 MPa at 28 days under standard curing conditions, whereas the tensile strength and strain capacity of the UHP-ECC were 18 MPa and 8{\%}, respectively. Different fiber volumetric ratios and geometries (fiber length and diameter) were used to investigate the influences of fiber-reinforcement parameters on the mechanical and crack-pattern properties of UHP-ECC, including the tensile strength, strain capacity, strain energy, crack number, and crack spacing. It was found that the fiber reinforcement parameters significantly influence both the mechanical properties and crack-patterns of UHP-ECC. Based on the test results, a bilinear tensile stress-strain model was proposed for UHP-ECC and its accuracy was demonstrated through comparisons with the test results.",
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Direct Tensile Properties and Stress-Strain Model of UHP-ECC. / Yu, Ke Quan; Lu, Zhou Dao; Dai, Jian Guo; Shah, Surendra P.

In: Journal of Materials in Civil Engineering, Vol. 32, No. 1, 04019334, 01.01.2020.

Research output: Contribution to journalArticle

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