NEW INVESTIGATIONS INTO CONCRETE TECHNOLOGY

RECHERCHES NOUVELLES CONCERNANT LA TECHNOLOGIE DU BETON

THIS 2-PART STUDY DEALS WITH THE CHARACTERISTICS OF FRESH AND HARDENED CONCRETE. PART (1). GIVES RESULTS OBTAINED WITH A DEVICE WHICH AUTOMATICALLY PRODUCES CONSTANT-PLASTICITY CONCRETE (SERVO-WORKABILITY METER) AND RESULTS CONCERNING CONCRETE VIBRATION. A METHOD IS PROPOSED FOR CLASSIFYING VIBRATORS ACCORDING TO THEIR EFFICIENCY BY MEANS OF SONIC WAVE SPEED MEASUREMENTS. IN PART (2) THE FOLLOWING TOPICS ARE INVESTIGATED: TRIAXIAL STRESS AND POISSON'S EFFECT; RELAXATION OF CONCRETE KEPT AT A CONSTANT LENGTH; INFLUENCE OF THE ABSOLUTE DIMENSION OF THE MEMBERS ON THE SURFACE SHRINKAGE OF CONCRETE AND IN THE AXIS OF THE MEMBERS (THE DEVIATIONS OBSERVED ARE EXPLAINED BY THE EXISTENCE OF A WATER CONTENT GRADIENT); SPEED OF SOUND MEASUREMENTS ARE USED TO DEMONSTRATE THAT CONCRETE QUALITY IS LOWER AT THE SURFACE THAN INSIDE THE CONCRETE MEMBER. IN CONCLUSION, A STUDY IS PRESENTED OF THE INFLUENCE OF THE ABSOLUTE DIMENSION OF CONCRETE MEMBERS ON THEIR FLEXURAL STRENGTH.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00202568
• Authors:
  • L'HERMITE, R
  • MAMILLAN, M
  • SIMONNET, J
• Publication Date: 1973-9

Language

• French

Media Info

• Pagination: 1-43
• Serial:
  • ANN ITBTP
  • Issue Number: 309/310
  • ISSN: 0020-2568

Subject/Index Terms

• TRT Terms: Beams; Classification; Concrete; Concrete hardening; Deflection; Equipment; Fresh concrete; Measurement; Mechanical relaxation; Plasticity; Poisson ratio; Shrinkage; Size; Sound; Speed; Strength of materials; Stresses; Triaxial shear tests; Vibration; Workability
• Uncontrolled Terms: Efficiency; Quality
• ITRD Terms: 3472: Beam; 8513: Classification; 4755: Concrete; 5586: Deflection; 9014: Dimension; 5911: Efficiency; 3674: Equipment; 4750: Fresh concrete; 4722: Hardening; 6136: Measurement; 5922: Plasticity; 5924: Poisson's ratio; 9063: Quality; 5407: Relaxation (mech); 4743: Shrinkage; 6748: Sound; 5408: Speed; 5544: Strength (mater); 5575: Stress (in material); 5566: Triaxial; 5558: Vibration; 5941: Workability
• Subject Areas: Data and Information Technology; Materials; I32: Concrete;

Filing Info

• Accession Number: 01310741
• Record Type: Publication
• Source Agency: Institut Francais des Sciences et Technologies des Transports, de l'Aménagement et des Réseaux (IFSTTAR)
• Files: ITRD
• Created Date: Nov 21 2010 1:12PM