Field Measurements on Subsequently Strengthened Concrete Slabs

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Title: Field Measurements on Subsequently Strengthened Concrete Slabs

Author(s): M. Ladner

Publication: Special Publication

Volume: 55

Issue:

Appears on pages(s): 481-492

Keywords: bending; concrete slabs; deflection; deformation; field tests; loads (forces); load tests (structural); stiffness; strengthen-ing

Date: 8/1/1978

Abstract:
Field measurements on two existing reinforced concrete slabs had to show that the chosen strengthening methods were successful. This was done by determining the bending stiffnesses of the two slabs before and after strengthening. The strengthening methods and the measuring equipment are described. The results showed that the sub-sequent strengthening provided an increase of the bending stiffnesses. It was also found that to achieve good quantitatif results a load test is required, whereas the actual floor loading produces only qualitatif results.