DEVELOPMENT OF A SIMPLIFIED SECOND SHRINKAGE TEST

MISE AU POINT D'UN ESSAI SIMPLIFIE DE SECOND RETRAIT

Second shrinkage is a new characteristic of cement paste related to the risk of cracking in structures during the first hours or days after concrete has been poured. The knowledge of this phenomenon can give additional useful data on all products which are involved in hydration (cement, admixtures, secondary additives) and perhaps also on the hydration mechanism itself. It is shown that second shrinkage can be very simply and reliably measured. The measurements are reproducible, and do not depend on the characteristics of the measuring apparatus (especially shape and volume of the sample); this augurs well for cross-checking between laboratories. Attention is drawn to the need of developing an official procedure, and the authors indicate the aspects which remain to be defined with this aim in view. /TRRL/

• Corporate Authors:

  Laboratoire Central des Ponts et Chausees (LCPC)

  Boulevard Lefebvre 58
  Paris Cedex 15,   France  F-75732
• Authors:
  • Baron, J
  • Elron, J F
  • Guieysse, B
• Publication Date: 1977-5-6

Language

• French

Media Info

• Features: Figures; Photos; References; Tables;
• Pagination: p. 39-44
• Serial:
  • Bulletin de Liaison des Lab des Ponts et Chaussees
  • Issue Number: 89
  • Publisher: Laboratoire Central des Ponts et Chausees (LCPC)

Subject/Index Terms

• TRT Terms: Cement paste; Concrete hardening; Cracking; Fracture mechanics; Fresh concrete; Hardness; Hydration; Measurement; Shrinkage; Test procedures
• Uncontrolled Terms: Laying; Reproducibility
• ITRD Terms: 4767: Cement paste; 5211: Cracking; 4750: Fresh concrete; 4722: Hardening; 3623: Laying; 6136: Measurement; 5927: Reproducibility; 4743: Shrinkage; 6288: Test method
• Subject Areas: Highways; Materials; Planning and Forecasting; I32: Concrete; I72: Traffic and Transport Planning;

Filing Info

• Accession Number: 00194100
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• Files: ITRD, TRIS
• Created Date: Jun 13 1979 12:00AM