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Steel Fibrous Concrete

#G-991


The Construction of Reliable and Durable Structural Units for Energy Facilities, Transportation Facilities and Other Structures Subjected to the Action of a Variety of Conditions and Loads Using New Compound Material - Steel Fibrous Concrete

Tech Area / Field

  • ENV-WDS/Waste Disposal/Environment
  • FIR-ENG/Reactor Engineering and NPP/Fission Reactors
  • MAT-COM/Composites/Materials
  • OTH-BIT/Building Industry Technology/Other

Status
3 Approved without Funding

Registration date
28.02.2003

Leading Institute
K.S.Zavriev Institute of Structural Mechanics and Earthquake Engineering, Georgia, Tbilisi

Collaborators

  • University of Sheffield / Department of Mechanical Engineering, UK, Shiffield

Project summary

A new cement - base compound material - steel fiber concrete, by virtue of its excellent mechanical behaviour, has been used to advantage in the building trade.

To extend the areas of application of steel fiber concrete extensive experimental and theoretical studies of its mechanical properties should be carried out.

This is precisely what motivated the pursuance of the present research. Special - purpose installations in experimental laboratory are going to be employed to test in parallel the specimens of fine concrete (steel fiber concrete jig) and steel fiber concrete in compression, tension and torsion (short-term and long-term trials).

The aim of the project:

- strength index, modulus of elasticity index, deformation index for concrete and steel fiber concrete;

- moisture transfer theory and the determination of moisture transfer parameters for compound materials;

- moisture deformation theory; ascertaining shrinkage and swelling indices for fine concrete and steel fiber concrete of varying age and moisture content; formulae providing the prognosis for the above - mentioned processes;

- cement - base compound material creep theory; the determination of creep nuclei and their approximation in terms of new expressions (using logarithmic functions);

- ascertaining creep parameters depending on material age, moisture content and type of loading; A technique device for the determination of the said parameters;

- the application of the principle of temperature - time analogy for cement - base compound building materials;

- the development of universal formulae for compound material creep nuclei, allowing for material age, moisture content and temperature;

- the influence of drying up and moistening on prolonged deformation of specimens in compression, tension or torsion;

- setting up equations of stress-strain relationship for compound materials with moisture content varying along the specimen cross-section; the determination of the parameters involved and providing solutions to the equations;

- working out the issues concerning the theory of shells under variable moisture content.

The resolution of above-mentioned issues will make it possible to refine the analysis technique and to build reliable, stable and durable constructions and structures of steel fiber concrete:


- with a view to improving the seismic stability of civil and industrial structures;
- for protective shells of nuclear electric power plants;
- for various shells and floor slabs;
- with a view to improving the stability of river dams under flooding;
- for important sections of waterworks facilities - pressure tunnels, lower pools of high-head dams etc.;
- for airfield runways, highway pavements; bridge deckings;
- for persified - purpose subsurface structures: underground railways, electric power plants etc.;
- for reinforcement of mines and tunnels;
- for coast-protecting marine structures;
- for rocket launching platforms and shafts;
- for persified - purpose military installations.


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The International Science and Technology Center (ISTC) is an intergovernmental organization connecting scientists from Kazakhstan, Armenia, Tajikistan, Kyrgyzstan, and Georgia with their peers and research organizations in the EU, Japan, Republic of Korea, Norway and the United States.

 

ISTC facilitates international science projects and assists the global scientific and business community to source and engage with CIS and Georgian institutes that develop or possess an excellence of scientific know-how.

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