Monitoring the Setting of Concrete Containing High Cement Substitution by Supplementary Cementitious Materials

Non-destructive ultrasonic waves were used to monitor continuously the setting and hardening behaviour of ‘green’ concretes with high cement substitution by supplementary cementitious materials since casting time. The ultrasonic velocity, the energy and the frequency spectrum (FFT algorithm) evolution as function of concrete age were recorded. Tests were carried out at 20°C for nine mixture proportions: a reference concrete with Portland cement, five green concretes with various proportions of blast furnace slag or fly ash and three green concretes with a combination of limestone microfiller and blast furnace slag or fly ash. The use of limestone microfiller allowed decreasing the water/binder ratio of the green concretes by keeping the same workability. Consequently, the initial and final settings times occurred earlier for green concretes with limestone microfiller than for those without limestone microfiller. The use of limestone microfiller made it possible to counteract the slow development of the setting of green concretes.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/9780415593168
• Corporate Authors:

  CRC Press/Balkema

  P.O. Box 447
  2300 AK Leiden,   Netherlands 
• Authors:
  • Khokhar, M I A
  • Staquet, S
  • Roziere, E
  • Loukili, A
• Conference:
  • Sixth International Conference on Concrete under Severe Conditions: Environment and Loading
  • Location: Merida Yucatan, Mexico
  • Date: 2010-6-7 to 2010-6-9
• Publication Date: 2010-7-5

Language

• English

Media Info

• Media Type: Digital/other
• Features: Figures; Photos; References; Tables;
• Pagination: pp 1505-1512
• Monograph Title: Concrete under Severe Conditions: Environment and Loading. Proceedings of the 6th International Conference on Concrete Under Severe Conditions (CONSEC'10), Merida, Yucatan, Mexico, 7-9 June 2010

Subject/Index Terms

• TRT Terms: Cement; Fly ash; Fresh concrete; Mineral fillers; Setting (Concrete); Slag; Ultrasonic waves
• Uncontrolled Terms: Supplementary cementing materials
• Subject Areas: Highways; Materials; I32: Concrete;

Filing Info

• Accession Number: 01447005
• Record Type: Publication
• ISBN: 9780415593168
• Files: TRIS
• Created Date: Sep 21 2012 5:08PM