DESIGN OF SHRINKAGE-COMPENSATING CONCRETE SLABS
Initial results are reported from a laboratory investigation to determine time-dependent properties of reinforced concrete slabs made with shrinkage-compensating concretes. Structural design details that influence the degree of shrinkage compensation are outlined and their effects are discussed. These details include type of cement, type of external restraint, percentage and position of reinforcement and type of concrete aggregates. This investigation shows that the structural behavior of all three types of commercially available shrinkage compensating cements is essentially the same. The degree of compensation is largely dependent upon the restraint within and adjoining the slab. The initial test results indicate that the cements used in this study did not provide enough expansion to give complete compensation for all percentages of reinforcement. However, complete compensation was achieved for lightly reinforced slabs. Criteria that the structural designer can use to relate the degree of shrinkage compensation to the expansive potential of the concrete are presented.
- Presented at the Klein Symposium on Expansive Cement Concretes, SP-38, American Concrete Institute, Detroit, Mich., 1973.
Skokie, IL United States 60077
- Russell, H G
- Publication Date: 1975
- Features: Figures; Tables;
- Pagination: 30 p.
- TRT Terms: Expansive cement; Expansive concrete; Reinforced concrete; Slabs; Structural design; Time dependence
- Subject Areas: Highways; Materials;
- Accession Number: 00129040
- Record Type: Publication
- Report/Paper Numbers: RD034.01D
- Files: TRIS
- Created Date: Mar 10 1976 12:00AM