THEORETICAL STUDY OF THE BEHAVIOR OF CONCRETE UNDER SHORT-TIME UNIAXIAL AND BIAXIAL LOADING

The stress distribution around pores with different shape and different orientation in a homogeneous and isotropic material is discussed. If the relative frequency of different pore shapes is taken into consideration a "randomppore" can be mathematically developed. A microscopic analysis of pore shape frequency in hardened cement paste is described. The frequency of stress peaks in the material around a random pore is calculated. The probability of crossings of a given stress level can be studied. If this level can be associated with the strength of the material, the frequency of crossings indicates the number of microcracks. The method described can be extended to cover the case of three-dimensional pores. The mechanical behavior of a porous material under biaxial stress can be described with this statistical approach. The mathematical treatment can also be applied to describe creep process of a porous material under complex state of stress.

  • Corporate Authors:

    VDI Nachrichten

    Postfach 1139, Graf-Recke-Strasse 84
    4 Dusseldorf 1,   Germany 
  • Authors:
    • Zaitsev, J
    • Wittmann, F H
  • Publication Date: 1974-6

Language

  • German

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00260657
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Nov 12 1974 12:00AM