Experimental and numerical investigation of static and fatigue behavior of mortar with blast furnace slag sand as fine aggregates in air and water

Muhammad Aboubakar Farooq, Yasuhiko Sato, Toshiki Ayano, Kyoji Niitani

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

The experimental and analytical study are attempted to clarify the static and fatigue behavior of mortar with blast furnace slag (BFS) sand as fine aggregates in compression in air and water. The cylindrical BFS mortar specimens were used for static and fatigue compression tests in air and water and results are compared with those of mortar using crushed sand (CS). The fatigue load was applied in the form of sine signal with a constant amplitude and the frequency of 5 Hz. The stress level is varied from 60%, 70% and 80% of the uniaxial compressive strength. The experimental results disclose that BFS mortar exhibits more fatigue life compared to CS mortar in air, while it is similar in water. Thereafter, the stress-strain relationships for each mortar under monotonic loading are formulated. Moreover, a simplified fatigue model for the assessment of plastic strain, total strain and fracture parameter at different number of loading cycles and for prediction of fatigue life is also proposed.

Original languageEnglish
Pages (from-to)429-443
Number of pages15
JournalConstruction and Building Materials
Volume143
DOIs
Publication statusPublished - 2017 Jul 15
Externally publishedYes

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Keywords

  • Air
  • Blast furnace slag sand
  • Fatigue
  • Mortar
  • Simplified fatigue model
  • Stress-strain model
  • Water

ASJC Scopus subject areas

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

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