Experimental determination of early age fracture toughness and fracture process zone size in cement pastes

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

1 Citation (Scopus)

Abstract

The micro-scratch test and its analysis continue to grow in the fields of material science and engineering, particularly as it relates to materials at smaller scales being used for fracture resistance. In this study, white cement paste specimens were cast, extracted and their hydration was stopped at desired curing ages. A Rockwell probe was used to scratch the surface of the specimens to determine the fracture toughness at that age. Classical Brazilian split-cylinder tests were also performed to compliment the scratch tests. The excellent convergence of the raw data allows the increase of fracture toughness and splitting strength over time to be determined. Finally, Irwin's characteristic length, which is proportional to the fracture process zone size, is determined and shown to asymptotically reach a constant size.

Original languageEnglish (US)
Title of host publicationMechanics and Physics of Creep, Shrinkage, and Durability of Conrete: A Tribute to Zdenek P. Bazant - Proceedings of the 9th Int. Conf. on Creep, Shrinkage, and Durability Mechanics, CONCREEP 2013
Pages364-371
Number of pages8
StatePublished - 2013
Externally publishedYes
Event9th International Conference on Creep, Shrinkage, and Durability Mechanics: A Tribute to Zdenek P. Bazant, CONCREEP 2013 - Cambridge, MA, United States
Duration: Sep 22 2013Sep 25 2013

Other

Other9th International Conference on Creep, Shrinkage, and Durability Mechanics: A Tribute to Zdenek P. Bazant, CONCREEP 2013
CountryUnited States
CityCambridge, MA
Period9/22/139/25/13

Fingerprint

Fracture toughness
Cements
Materials science
Hydration
Curing

ASJC Scopus subject areas

  • Mechanics of Materials
  • Building and Construction

Cite this

Hoover, C. (2013). Experimental determination of early age fracture toughness and fracture process zone size in cement pastes. In Mechanics and Physics of Creep, Shrinkage, and Durability of Conrete: A Tribute to Zdenek P. Bazant - Proceedings of the 9th Int. Conf. on Creep, Shrinkage, and Durability Mechanics, CONCREEP 2013 (pp. 364-371)

Experimental determination of early age fracture toughness and fracture process zone size in cement pastes. / Hoover, Christian.

Mechanics and Physics of Creep, Shrinkage, and Durability of Conrete: A Tribute to Zdenek P. Bazant - Proceedings of the 9th Int. Conf. on Creep, Shrinkage, and Durability Mechanics, CONCREEP 2013. 2013. p. 364-371.

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

Hoover, C 2013, Experimental determination of early age fracture toughness and fracture process zone size in cement pastes. in Mechanics and Physics of Creep, Shrinkage, and Durability of Conrete: A Tribute to Zdenek P. Bazant - Proceedings of the 9th Int. Conf. on Creep, Shrinkage, and Durability Mechanics, CONCREEP 2013. pp. 364-371, 9th International Conference on Creep, Shrinkage, and Durability Mechanics: A Tribute to Zdenek P. Bazant, CONCREEP 2013, Cambridge, MA, United States, 9/22/13.
Hoover C. Experimental determination of early age fracture toughness and fracture process zone size in cement pastes. In Mechanics and Physics of Creep, Shrinkage, and Durability of Conrete: A Tribute to Zdenek P. Bazant - Proceedings of the 9th Int. Conf. on Creep, Shrinkage, and Durability Mechanics, CONCREEP 2013. 2013. p. 364-371
Hoover, Christian. / Experimental determination of early age fracture toughness and fracture process zone size in cement pastes. Mechanics and Physics of Creep, Shrinkage, and Durability of Conrete: A Tribute to Zdenek P. Bazant - Proceedings of the 9th Int. Conf. on Creep, Shrinkage, and Durability Mechanics, CONCREEP 2013. 2013. pp. 364-371
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