UNITED STATES DEPARTMENT OF AGRICULTURE 

 BULLETIN No. 532 



Contribution from the Office of Public Roads and Rural Engineering 

 LOGAN WALLER PAGE, Director 



Washington, D. C. 



PROFESSIONAL PAPER 



October 13, 1917 



THE EXPANSION AND CONTRACTION 



OF CONCRETE AND CONCRETE 



ROADS 



By* 



A. T. GOLDBECK, Engineer of Tests, and F. H. JACKSON, JR. 

 Assistant Testing Engineer 



CONTENTS 



Page 

 Laboratory Measurements of Expansion 



and Contraction 2 



Results of Expansion and Contraction 



Measurements 5 



Measuring the Contraction and Expansion 



of Concrete Roads 12 



Page 

 Results of Measurements at Chevy Chase, 



Md 15 



Expansion and Contraction of Ohio Post 



Road 20 



General Discussion 27 



Conclusions 30 



WASHINGTON 



GOVERNMENT PRINTING OFFICE 



1917 



mssa 



