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3. Preventing cracking
3.1 Concrete composition
The influence of numerous parameters related to material composition (temperature, additions, specific surface area of cement grains, type of cement, W/C ratio) on the evolution of the various shrinkages has been highlighted in the first paragraphs, and taking these parameters into account provides an initial approach to limiting crack formation within the material.
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endogenous shrinkage can be reduced by increasing the E/C ratio, but this leads to a reduction in compressive strength and has a major impact on other properties (permeability, diffusion) that are important for the durability of the material;
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Preventing cracking
Bibliography
Standards and norms
- 'Cooling and Insulating Systems for Mass Concrete'. - ACI 207.4R-93 -
- “Prediction of Creep, Shrinkage, and Temperature Effects in Concrete Structures (ACI 209R-92),” American Concrete Institute, Farmington Hills, Mich. - ACI Committee 209 - 1992
- 'Building Code Requirements for Reinforced Concrete'. - ACI 318 - 1995
- Règles techniques de conception et de calcul des ouvrages et constructions en béton...
Software tools
Free Tmax béton application, available on the playstore (Android)
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Cast3m, a finite element calculation code developed by CEA,
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Code Aster, finite element calculation code developed...
Websites
CEOS.fr national project,
http://www.ceosfr.irex.asso.fr/
European Action COST TU 1404,
Rilem Technical Committee,
Directory
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IFSTTAR,
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Civil and Mechanical Engineering Research Institute,
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Mechanics and Technology...
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