Brittleness of high strength concrete

Ravindra Gettu*, Zdenek P Bazant, Martha E. Karr

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

Fracture mechanics approaches are needed to determine material parameters which are related to the brittleness of concrete and its structural response. The size effect method is used to determine these fracture parameters for typical high strength silica fume concrete. The method requires only the peak loads of geometrically similar fracture specimens that are significantly different in size. Three-point bending tests of notched specimens are used. Comparison with data of normal strength concrete shows that for an increase in compressive strength of about 160%, the fracture energy and fracture toughness increase by only 12% and 25%, respectively. The brittleness more than doubles, and the effective fracture process zone length decreases by about 60%.

Original languageEnglish (US)
Title of host publicationServ Durability Constr Mater Proc First Mater Eng Congr
PublisherPubl by ASCE
Pages976-985
Number of pages10
ISBN (Print)0872627772
StatePublished - Jan 1 1990
EventServiceability and Durability of Construction Materials - Proceedings of the First Materials Engineering Congress Part 1 (of 2) - Denver, CO, USA
Duration: Aug 13 1990Aug 15 1990

Other

OtherServiceability and Durability of Construction Materials - Proceedings of the First Materials Engineering Congress Part 1 (of 2)
CityDenver, CO, USA
Period8/13/908/15/90

ASJC Scopus subject areas

  • Engineering(all)

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