Title:
Creep, Shrinkage-Size, and Age at Loading Effects
Author(s):
Anthony H. Bryant and Chayatit Vadhanavikkit
Publication:
Materials Journal
Volume:
84
Issue:
2
Appears on pages(s):
117-123
Keywords:
age; concretes; creep properties; loads (forces); shrinkage; tests; Materials Research
DOI:
10.14359/1836
Date:
3/1/1987
Abstract:
Creep and shrinkage testing of two sets of specimens is described. For the size and shape tests, the specimens modeled 100 to 400 mm section square columns, 100 to 400 mm thick slabs, and sealed specimens. For the age at loading tests the specimens modeled 150 mm square columns, 150 mm thick slabs, and sealed specimens that were loaded at concrete ages ranging from 8 to 182 days. Strains were monitored while the specimens were kept in a constant environment room. The experimental results form an extensive and consistent series that can be used to calibrate or validify creep and shrinkage prediction methods. The experimental results are compared with predictions based on the method recommended by ACI Committee 209 and a simple method for an improvement of predictions is presented.