Publication detail

The Effect of a Superplasticizer Admixture on the Mechanical Fracture Parameters of Concrete.

ŠIMONOVÁ, H. HAVLÍKOVÁ, I. DANĚK, P. KERŠNER, Z. VYMAZAL, T.

Original Title

The Effect of a Superplasticizer Admixture on the Mechanical Fracture Parameters of Concrete.

Type

journal article in Web of Science

Language

English

Original Abstract

This paper focuses on the mechanical fracture parameters obtained from records of three-point bending tests on concrete specimens with a central edge notch. The tests were conducted on four sets of specimens made of different materials. The concrete of the specimens was different in the dosage of Portland cement CEM I 42.5 R (305 kg/m3 or 355 kg/m3) and superplasticizer (none or 0.25 % of the mass of the cement). The consistency class of fresh concrete determined using a slump test and a flow-table test was the same for all the mixtures. Three specimens in each set were tested after aging for 28 d. Increasing the dosage of cement and superplasticizer admixture influences the mechanical fracture properties of the concrete in both positive and negative ways. It follows that it is proper to monitor not only the effect of the superplasticizer admixture on the compressive strength values, but also focused attention on the fracture parameter values. The resistance to stable and unstable crack propagation, which is evidently connected with the durability of material, was quantified using a double-K fracture model.

Keywords

concrete, mechanical fracture parameters, superplasticizer, fracture test, double-K model

Authors

ŠIMONOVÁ, H.; HAVLÍKOVÁ, I.; DANĚK, P.; KERŠNER, Z.; VYMAZAL, T.

RIV year

2015

Released

15. 5. 2015

Publisher

Institute of Metals and Technology

Location

Ljubljana

ISBN

1580-2949

Periodical

Materiali in tehnologije

Year of study

49

Number

3

State

Republic of Slovenia

Pages from

417

Pages to

421

Pages count

5

BibTex

@article{BUT114506,
  author="Hana {Šimonová} and Ivana {Havlíková} and Petr {Daněk} and Zbyněk {Keršner} and Tomáš {Vymazal}",
  title="The Effect of a Superplasticizer Admixture on the Mechanical Fracture Parameters of Concrete.",
  journal="Materiali in tehnologije",
  year="2015",
  volume="49",
  number="3",
  pages="417--421",
  doi="10.17222/mit.2014.114",
  issn="1580-2949"
}