Publication result detail

Evaluation of Three-point Bending Fracture Tests of Selected Concrete: Mechanical Fracture Parameters

ŠIMONOVÁ, H.; DANĚK, P.; LEHKÝ, D.; KERŠNER, Z.; PAZDERA, L.

Original Title

Evaluation of Three-point Bending Fracture Tests of Selected Concrete: Mechanical Fracture Parameters

English Title

Evaluation of Three-point Bending Fracture Tests of Selected Concrete: Mechanical Fracture Parameters

Type

Paper in proceedings (conference paper)

Original Abstract

In this paper, authors focus attention on mechanical fracture parameters obtained from records of three-point bending fracture tests on concrete specimens with initial notch. Total eight sets of specimens were tested. Three specimens at the age of 28 days were tested in each set. Concrete was different in dosage of Portland cement CEM I 42.5 R and amount of used superplasticizer. The Effective Crack Model (ECM) was used to evaluate the load vs deflection diagrams to obtain modulus of elasticity and effective fracture toughness; specific fracture energy was determined using work-of-fracture method. Modulus of elasticity, tensile strength and fracture energy were also subject of identification via inverse analysis based on artificial neural network, which aim is to transfer the input data obtained from the fracture test to the desired material parameters.

English abstract

In this paper, authors focus attention on mechanical fracture parameters obtained from records of three-point bending fracture tests on concrete specimens with initial notch. Total eight sets of specimens were tested. Three specimens at the age of 28 days were tested in each set. Concrete was different in dosage of Portland cement CEM I 42.5 R and amount of used superplasticizer. The Effective Crack Model (ECM) was used to evaluate the load vs deflection diagrams to obtain modulus of elasticity and effective fracture toughness; specific fracture energy was determined using work-of-fracture method. Modulus of elasticity, tensile strength and fracture energy were also subject of identification via inverse analysis based on artificial neural network, which aim is to transfer the input data obtained from the fracture test to the desired material parameters.

Keywords

Concrete, fracture test, three-point bending, identification.

Key words in English

Concrete, fracture test, three-point bending, identification.

Authors

ŠIMONOVÁ, H.; DANĚK, P.; LEHKÝ, D.; KERŠNER, Z.; PAZDERA, L.

RIV year

2018

Released

19.05.2017

Publisher

Trans Tech Publications

Location

Switzerland

ISBN

978-3-0357-1105-9

Book

Solid State Phenomena: 23rd Concrete Days

ISBN

1012-0394

Periodical

Solid State Phenomena

Number

259

State

Swiss Confederation

Pages from

64

Pages to

69

Pages count

6

BibTex

@inproceedings{BUT135871,
  author="Hana {Šimonová} and Petr {Daněk} and David {Lehký} and Zbyněk {Keršner} and Luboš {Pazdera}",
  title="Evaluation of Three-point Bending Fracture Tests of Selected Concrete: Mechanical Fracture Parameters",
  booktitle="Solid State Phenomena: 23rd Concrete Days",
  year="2017",
  journal="Solid State Phenomena",
  number="259",
  pages="64--69",
  publisher="Trans Tech Publications",
  address="Switzerland",
  doi="10.4028/www.scientific.net/SSP.259.64",
  isbn="978-3-0357-1105-9",
  issn="1012-0394"
}