Monitoring of Creep and Shrinkage in a Newly Built Reinforced Concrete Structure—Preliminary Results
Oyewole Abe, Stephen O. Ekolu
Appears on pages(s):
creep; shrinkage; prediction model; real-life structure
The paper presents a scheme of instrumentation setup for monitoring creep and shrinkage in a newly constructed reinforced concrete structure. The structure consists of in-situ concrete structural elements including beams, slabs, and columns. Some construction aspects are discussed in the paper, along with experimental tests and the scheme of installations for the monitoring of real-life creep and shrinkage behavior of the structure. A simple monitoring system using Demec gauges is employed. The installation consisted of gluing Demec targets onto surfaces of structural elements for long-term recording of measurements. The in-situ strain monitoring allows the compilation of long-term data for comparison with model predictions and with creep test results. Preliminary results of up to 90 days are discussed, giving a 3-way comparison of the early age creep and shrinkage observations. It is shown that the three methods comprising the creep test, model predictions, and in-situ measurements are in agreement.