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Indirect check of aggregate pore effects on concrete

  • Lydon F. D. 
  • Al-Mahfoud H. H. 
International Symposium on Aggregates Themes 5. Aggregates for Concrete
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Abstract

It is very difficult to quantify aggregate pores directly in a way that allows pore/water interaction to be accurately related to hardened concrete properties. This work examines, a number of aggregates through water absorption checks and gives results of tests on some concretes made with them. Three especially relevant concrete properties are examined, initial surface absorption, freeze/thaw behaviour and drying shrinkage; it is shown that aggregate absorption is reflected in these properties.

Keywords

Coarse Aggregate Lightweight Concrete Ultrasonic Pulse Velocity BRITISH Standard Institution Precast Concrete 

Verification indirecte de l'influence de la porosite des granulats sur les betons

Résumé

Il est difficile de quantifier la porosité des granulats pour relier la résistance des bétons à l'interaction pores-eau. Ce travail donne les résultats d'essais sur des bétons effectués avec des granulats ayant des absorptions d'eau différentes. Trois propriétés des bétons ont été examinées: absorption de surface, gel-dégel et retrait au séchage; il est montré que l'absorption des granulats rend bein compte de ces propriétés.

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References

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Copyright information

© International Association of Engineering Geology 1984

Authors and Affiliations

  • Lydon F. D. 
    • 1
  • Al-Mahfoud H. H. 
    • 1
  1. 1.Department of Civil Engineering and Building TechnologyUniversity of Wales Institute of Science and TechnologyCardiffUK

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