YOUNG'S MODULUS AND POISSON'S RATIO OF HARDENED CEMENT PASTE UNDER DIFFERENT RELATIVE HUMIDITY

• HORIGUCHI Naoya

  Graduate Student, Dept. of Environmental Eng. and Arch, Nagoya Univ.

• IGARASHI Go

  Graduate Student, Dept. of Environmental Eng. and Arch, Nagoya Univ.

• MARUYAMA Ippei

  Assoc. Prof., Dept. of Environmental Eng. and Arch, Nagoya Univ. Dr. Eng.

Bibliographic Information

Other Title

• セメント硬化体のヤング率およびポアソン比の相対湿度依存性

Abstract

Young's modulus, Poisson's ratio, and bulk modulus of hardened cement under controlled different relative humidities were measured by ultrasonic method as well as direct tensile loading test. It was experimentally confirmed that Young's modulus, Poisson's ratio, and bulk modulus of hardened cement paste decreased as decrease in equilibrium relative humidity especially in the range above 40%RH. And in the range below 40%RH, experimental results of direct tensile loading test showed the decrease in Young's modulus and Poisson's ratio while the experimental results of ultrasonic test showed slight increase of Young's modulus and almost constant behavior of Poisson's ratio. For the decrease of Young's modulus and Poisson's ratio can be explained by the reduction of load-bearing water in the hardened cement paste due to drying, and slight increase under 40%RH by ultrasonic test can be explained by the increase of Si-O network of C-S-H due to drying.

Journal

• Journal of Structural and Construction Engineering (Transactions of AIJ)

  Journal of Structural and Construction Engineering (Transactions of AIJ) 76 (660), 231-236, 2011

  Architectural Institute of Japan

Keywords

• <i>Hardened Cement Paste</i>
• <i>Moisture content</i>
• <i>Young's Modulus</i>
• <i>Poisson's ratio</i>
• <i>Bulk Modulus</i>

Details

• CRID: 1390282680582112384
• NII Article ID: 130004507975
• DOI: 10.3130/aijs.76.231
• ISSN: 18818153
• ISSN: 13404202
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed