IMPERMEABILITY AND RESISTANCE TO CARBONATION OF CONCRETE WITH MICRO-SILICA AND WATER-REDUCING AGENTS . ADMIXTURES FOR CONCRETE: IMPROVEMENT OF PROPERTIES. PROCEEDINGS OF THE INTERNATIONAL SYMPOSIUM HELD BY RILEM (THE INTERNATIONAL UNION OF TESTING AND RESEARCH LABORATORIES FOR MATERIALS AND STRUCTURES), BARCELONA, MAY 14-17, 1990

The use of microsilica in concrete is under development, owing to the excellent properties it confers to the concrete on a durability level. This paper shows that to attain optimization of the properties of concrete filled with microsilica, the use of water-reducing admixtures with a high effectiveness is required, and, within these last, different behaviours have been observed depending on their chemical nature. This study discusses the combined effects of the microsilica and water-reducing admixtures in two fundamental properties of the concrete, in relation to its durability: its waterproofness and its carbonation resistance. The different types of admixtures used have shown differing behaviour, not only in their effectiveness as far as reducing the water/cement ratio is concerned, but also in the durability and compressive strength of the concrete, depending on their chemical constitution. Modified lignosulphonate and carboxylic polymer-based admixtures show greater effectiveness than these based on naphtalene sulphonate-formaldehyde condensate and sulphonated melamina-formaldehyde condensate. (Author/TRRL)

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/0412374102
• Corporate Authors:

  Chapman and Hall Limited

  11 New Fetter Lane
  London,   England 
• Authors:
  • Artigues, J C
  • Curado, J
  • Iglesias, E
• Publication Date: 1990

Language

• English

Media Info

• Features: References;
• Pagination: p. 229-240
• Serial:
  • Publication of: Chapman and Hall
  • Publisher: Chapman and Hall Limited

Subject/Index Terms

• TRT Terms: Admixtures; Carbonation; Concrete; Conferences; Lignosulfonate; Physical properties; Polymers; Silica fume; Water reducing agents; Waterproofing
• Uncontrolled Terms: Concrete properties
• Subject Areas: Highways; Materials;

Filing Info

• Accession Number: 00612204
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• ISBN: 0-412-37410-2
• Files: ITRD, TRIS
• Created Date: Aug 31 1991 12:00AM