Unclassified 



IS PAGEfWhon Oar, 



20. Continued 



resistance strain gages proved to be reliable for measuring expansion and subsequent 

 shrinkage of the experimental panels. As a result of this study, a comprehensive research 

 program is proposed for experimental verification of design and field control measures 

 that will permit the use of shrinkage-compensating cement mortars in sandwich panel 

 construction. 



Library Card 



Civil Engineering Laboratory 



CONCRETE SANDWICH CONSTRUCTION FOR ENERGY 

 CONSERVATION (Final), by J. R. Keeton 

 TN-1574 15pp illus March 1980 Unclassified 

 1. Shrinkage-compensating concrete 2. Expansive concrete I. ZF57.571.00LOL001 



An abbreviated research study on use of shrinkage-compensating expansive concrete in 

 sandwich-type wall and roof panels containing insulation at mid-thickness is described. The use 

 of expansive concrete is shown to be a technically viable concept for eliminating shrinkage 

 cracking, thus preventing moisture penetration which can reduce insulation effectiveness, 

 cause deterioration of the insulating material, and accelerate steel corrosion. Embeddable 

 resistance strain gages proved to be reliable for measuring expansion and subsequent shrinkage 

 of the experimental panels. As a result of this study, a comprehensive research program is 

 proposed for experimental verification of design and field control measures that will permit the 

 use of shrinkage-compensating cement mortars in sandwich panel construction. 



Unclassified 



LASSinCATlON OF 



