- Author
- Phan, L. T.
- Title
- Spalling and Mechanical Properties of High Strength Concrete at High Tempeature.
- Coporate
- National Institute of Standards and Technology, Gaithersburg, MD
- Report
- Volume 2
- Book or Conf
- Concrete Under Severe Conditions: Environment and Loading (CONSECA '07). Volume 2. 5th (Fifth) International Conference. Proceedings. June 4-6, 2007, Tours, France, Toutlemonde, F.; Sakai, K.; Gjørv, O. E.; Banthia, N., Editors, 1595-1608 p., 2007
- Keywords
- concretes | spalling | mechanical properties | high temperature | curing | heating rates | test methods | polypropylene | fibers | degradation | exposure
- Identifiers
- High Strength Concrete (HSC)
- Abstract
- Effects of elevated ternpemture exposure and various factors, including water-to-cementitious materials ratios (w/cm), curing conditions, heating rates, test methods, and polypropylene (PP) fibers, on (1) pore pressure buildup and potential for explosivc spalling and on (2) degradation of mechanical properties in normal strength (NSC) and high-strength concrete (HSC) arc presented. Degradations of mechanical propctiies were measured using 100 x 200 mm cylinders, heated to temperatures of up to 600 °C at 5 °C/min, and compared with results of other studies and existing codes. Pore pressures were measured using 100 x 200 x 200 mm blocks, heated to 600 °C at 5 °C/min and 25 °C/min. Experimental evidences of the complex, temperature-dependant moisture transport process which significantly influenced pore pressure and temperature developments are described.