ASCE will be sunsetting the Civil Engineering Database (CEDB) in the coming months. We encourage you to start using the ASCE Library to perform content searches. In the ASCE Library, you can save your search results as well as receive email content alerts when new content relevant to your area of interest is published. Try it out today at https://ascelibrary.org.

 

Size Effect in Concrete Structures and Influence of Loading Rate

by Zden?k P. Ba?ant, Northwestern Univ, United States,
Ravindra Gettu, Northwestern Univ, United States,



Document Type: Proceeding Paper

Part of: Serviceability and Durability of Construction Materials

Abstract:

The size effect law models the influence of the dimensions of the structure or specimen on the failure stress. This model can be used to quantify the brittleness of failure, and determine material fracture parameters. Recent applications of the method are reviewed. Furthermore, results from an experimental investigation of the influence of loading rate on size effect and fracture behavior, in the static regime, are presented and discussed. The size effect on the fracture of concrete increases significantly with increasing time to failure. It also appears that as the loading rate decreases, the effective process zone length decreases, implying increase in the brittleness. The fracture toughness also decreases with increasing time to failure, explaining the usually observed decrease in strength.

Subject Headings: Material failures | Size effect | Failure analysis | Concrete | Loading rates | Cracking | Concrete structures

Services: Buy this book/Buy this article

 

Return to search