An experimental study to evaluate the effects of adding glazed hollow beads on the mechanical properties and thermal conductivity of concrete

L. Zhao, W. Wang, Z. Li, Yohchia F. Chen

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

This paper discusses the effects of glazed hollow bead particles on the mechanical properties and thermal conductivity of concrete and the micro appearances of the specimens through the scanning electron microscope. In the experiments, glazed hollow bead was added to the concrete to substitute sands. The amount of glazed hollow bead was kept at 5, 10, 15 and 20% by weight. The results show that the higher the glazed hollow bead amount, the higher will be the percentage of broken glazed hollow bead particles during the mixing process of concrete and that the addition of glazed hollow bead particles reduces the density, compressive strength, elasticity modulus and thermal conductivity coefficient of concrete. When the glazed hollow bead amount reaches 20%, the density, thermal conductivity coefficient, 56-day compressive strength and elasticity modulus of concrete decrease by 14, 69·5, 18·7 and 21·4%, respectively, compared with normal concrete.

Original languageEnglish (US)
Pages (from-to)S5929-S5935
JournalMaterials Research Innovations
Volume19
DOIs
StatePublished - May 1 2015

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beads
hollow
Thermal conductivity
thermal conductivity
mechanical properties
Concretes
Mechanical properties
conductivity
compressive strength
Compressive strength
Elasticity
coefficients
Electron microscopes
Sand
sands
modulus of elasticity
Scanning
elastic properties
electron microscopes
substitutes

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

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abstract = "This paper discusses the effects of glazed hollow bead particles on the mechanical properties and thermal conductivity of concrete and the micro appearances of the specimens through the scanning electron microscope. In the experiments, glazed hollow bead was added to the concrete to substitute sands. The amount of glazed hollow bead was kept at 5, 10, 15 and 20{\%} by weight. The results show that the higher the glazed hollow bead amount, the higher will be the percentage of broken glazed hollow bead particles during the mixing process of concrete and that the addition of glazed hollow bead particles reduces the density, compressive strength, elasticity modulus and thermal conductivity coefficient of concrete. When the glazed hollow bead amount reaches 20{\%}, the density, thermal conductivity coefficient, 56-day compressive strength and elasticity modulus of concrete decrease by 14, 69·5, 18·7 and 21·4{\%}, respectively, compared with normal concrete.",
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N2 - This paper discusses the effects of glazed hollow bead particles on the mechanical properties and thermal conductivity of concrete and the micro appearances of the specimens through the scanning electron microscope. In the experiments, glazed hollow bead was added to the concrete to substitute sands. The amount of glazed hollow bead was kept at 5, 10, 15 and 20% by weight. The results show that the higher the glazed hollow bead amount, the higher will be the percentage of broken glazed hollow bead particles during the mixing process of concrete and that the addition of glazed hollow bead particles reduces the density, compressive strength, elasticity modulus and thermal conductivity coefficient of concrete. When the glazed hollow bead amount reaches 20%, the density, thermal conductivity coefficient, 56-day compressive strength and elasticity modulus of concrete decrease by 14, 69·5, 18·7 and 21·4%, respectively, compared with normal concrete.

AB - This paper discusses the effects of glazed hollow bead particles on the mechanical properties and thermal conductivity of concrete and the micro appearances of the specimens through the scanning electron microscope. In the experiments, glazed hollow bead was added to the concrete to substitute sands. The amount of glazed hollow bead was kept at 5, 10, 15 and 20% by weight. The results show that the higher the glazed hollow bead amount, the higher will be the percentage of broken glazed hollow bead particles during the mixing process of concrete and that the addition of glazed hollow bead particles reduces the density, compressive strength, elasticity modulus and thermal conductivity coefficient of concrete. When the glazed hollow bead amount reaches 20%, the density, thermal conductivity coefficient, 56-day compressive strength and elasticity modulus of concrete decrease by 14, 69·5, 18·7 and 21·4%, respectively, compared with normal concrete.

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