TESTING METHODS FOR CONCRETE DURABILITY

METHODS D'ESSAIS DE DURABILITE DU BETON

Test methods for measuring the progressive deterioration of concrete were studied. To this end, cement paste, mortar and concrete samples were subjected to wetting and drying cycles in sodium sulphate and pure water and to freezing-thawing cycles. The effects of those tests were studied by analyzing the variation in the weight of the samples, their length and flexural strength, variations in the time of ultrasonic wave propagation, by quantitative and qualitative optic microscopy, scanning electron microscopy and x-rays. The results of the study show that the ultrasonic method can be utilized to detect local cracks at the initial stage. Among all the methods analyzed, that using the measurement of ultrasonic wave propagation time seems to be the best for characterizing the progressive deterioration of concrete. Measurements of flexural strength also showed the degree of corrosion. Weight measurements did not permit any observations of damages while length measurements were not always reliable. /TRRL/

• Corporate Authors:

  Rilem

  12 Rue Brancion
  75737 Paris Cedex,   France 

  Springer Verlag

  175 5th Avenue
  New York, NY  United States  10010
• Authors:
  • Gjorv, P E
  • Shah, S P
• Publication Date: 1971-9-10

Media Info

• Features: Figures; Photos; References; Tables;
• Pagination: p. 295-304
• Serial:
  • Materiaux & Constructions/Materials & Structures
  • Issue Number: 23
  • Publisher: International Union of Testing and Research Laboratories for Mat & St

Subject/Index Terms

• TRT Terms: Concrete; Corrosion; Cracking; Deflection; Durability; Freeze thaw durability; Length; Measurement; Microscopes; Samples; Sodium; Sodium sulfate; Strength of materials; Sulfates; Test procedures; Ultrasonic tests; Ultrasonics; Water; Waves; Weight; X ray analysis; X rays
• Uncontrolled Terms: Freeze thaw cycles; Immersion
• Old TRIS Terms: Sample (Material)
• ITRD Terms: 4767: Cement paste; 4755: Concrete; 5211: Cracking; 5586: Deflection; 5910: Durability; 6965: Electronics; 2577: Freezing thawing cycle; 6997: Frequency; 6213: Immersion test; 6488: Length; 6136: Measurement; 6790: Microscope; 9048: Modification; 4769: Mortar; 7197: Sodium; 7131: Solution (chem); 5544: Strength (mater); 7310: Sulphate; 6739: Ultrasonic; 5558: Vibration; 4355: Water; 5485: Weight; 6728: X ray
• Subject Areas: Highways; Materials; Planning and Forecasting; I32: Concrete; I72: Traffic and Transport Planning;

Filing Info

• Accession Number: 00125305
• Record Type: Publication
• Source Agency: Laboratoire Central des Ponts et Chausees (LCPC)
• Files: ITRD, TRIS
• Created Date: Dec 3 1975 12:00AM