- Author
-
Gillen, M.
- Title
- Short-Term Creep of Concrete at Elevated Temperatures.
- Coporate
- Construction Technology Laboratories, Skokie, IL
- Sponsor
- National Bureau of Standards, Gaithersburg, MD
- Report
-
NBS GCR 82-407,
September 1982,
112 p.
- Distribution
- Available from National Technical Information Service
- Contract
- NB80NADA1009
- Keywords
-
aggregates
|
concretes
|
creep tests
|
fire tests
|
high temperature tests
- Abstract
- Two hundred thirty-one creep strain tests were conducted at temperatures from ambient to 1200F over periods from 6 to 24 hours on 2 x 4-in. cylindrical concrete specimens. In addition, forty-five compressive strength tests were conducted on heated concrete specimens. Test variables included load (0.30, 0.45, and 0.60 fc), temperature (73 to 1200F), rate of heating (0 and 10F/min.), length of heating (6 and 24 hr), aggregate type (calcareous, siliceous, and lightweight), variation of compressive strength with temperature, and concrete relative humidity (0, 50, and 100% RH). A model of short-term creep of concrete at elevated temperatures as a function of significant test variables was developed.