EFFECT OF WATER SORPTION ON THE DYNAMIC MODULUS OF ELASTICITY OF DESICCATED CONCRETE MATERIALS

The effects of desorption and water sorption on the dynamic modulus of concrete, mortars and hardened portland cement paste are investigated. Desiccation of the latter results in a significant reduction in the dynamic modulus. Cyclic drying and wetting of the concrete system further decreases the modulus value. Shrinkage induced microcracking is proposed as the major mechanism of the modulus variation. It is concluded that the first drying of the concrete system results in some irreversible changes in the structure of the hardened cement paste. (A) /TRRL/

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/0858411180
• Corporate Authors:

  University of New South Wales

  School of Civil Engineering, Anzac Parade
  Kensington, New South Wales  Australia  2033
• Authors:
  • Haque, M N
  • COOK, D J
• Publication Date: 1976-5

Language

• English

Media Info

• Features: Figures; References; Tables;
• Pagination: 12 p.

Subject/Index Terms

• TRT Terms: Absorption; Cement; Cement paste; Coefficients; Concrete; Concrete mixing water; Cracking; Desorption; Drying; Dynamics; Formwork; Microcracking; Mix design; Modulus of elasticity; Mortar; Properties of materials; Shrinkage; Sorption; Water
• Uncontrolled Terms: Micro
• Old TRIS Terms: Concrete forming; Concrete shrinkage
• ITRD Terms: 6758: Absorption; 4758: Cement; 6410: Coefficient; 4755: Concrete; 5211: Cracking; 5184: Drying; 5473: Dynamics; 9045: Micro; 4714: Mix design; 4715: Mixing water (concrete); 5919: Modulus of elasticity; 4769: Mortar; 5925: Properties; 4743: Shrinkage
• Subject Areas: Highways; Materials; Planning and Forecasting; I32: Concrete; I72: Traffic and Transport Planning;

Filing Info

• Accession Number: 00165715
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• ISBN: 0 85841 118 0
• Report/Paper Numbers: Uniciv Report No 155Monog Ser
• Files: ITRD, TRIS
• Created Date: May 18 1978 12:00AM