Experimental and numerical study on mechanical properties of cement paste pipes subjected to uniaxial tensile loading

Xu Ma, Erik Schlangen*, Oğuzhan Çopuroğlu

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

1 Citation (Scopus)
35 Downloads (Pure)

Abstract

The aim of this paper is to investigate the mechanical properties of cement paste specimens by both experimental and numerical methods. Firstly, the specimens subjected to uniaxial tensile loading were studied experimentally. Afterwards, numerical investigation was carried out based on the experimental observations. Two types of specimens were used, which were unnotched and single notched specimens. The uniaxial tensile experiments of the unnotched specimens provided the Young's modulus and tensile strength of the specimens. The complete stress-strain responses of the specimens were derived from the uniaxial tensile experiments on the single notched specimens. The crack initiation and propagation were discussed. The uniaxial tensile loading experiments were simulated by a 3D lattice model. The local mechanical properties of lattice elements were determined through simulations. The tensile simulations of the unnotched specimen provided the Young's modulus and tensile strength for the local lattice elements. Then, the softening behavior of lattice elements was obtained from tensile simulations of the single notched specimen. The experimental and simulated stress-strain responses and cracking process were compared with each other. It was found that the simulated results matched quite well with the experiments with the set of local mechanical properties that was determined. This set was used in a further study for the simulations on external sulfate attack.

Original languageEnglish
Article number102296
Number of pages8
JournalTheoretical and Applied Fracture Mechanics
Volume103
DOIs
Publication statusPublished - 2019

Bibliographical note

Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.

Keywords

  • 3D lattice modeling
  • Cement paste pipe
  • Mechanical properties
  • Single notch
  • Uniaxial tensile test

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