Publication detail

Modified Cement-based Mortars: Crack Initiation and Volume Changes

HAVLÍKOVÁ, I. BÍLEK, V. TOPOLÁŘ, L. ŠIMONOVÁ, H. SCHMID, P. KERŠNER, Z.

Original Title

Modified Cement-based Mortars: Crack Initiation and Volume Changes

Type

journal article in Web of Science

Language

English

Original Abstract

The aim of this paper was to quantify the crack initiation and volume changes of three types of fine-grain cement-based composites: the reference one including Portland cement only and the other two with the mass fraction 20 % of Portland cement replaced by granulated blast-furnace slag or pulverized-coal fly ash. Half of the specimens from each mixture were cured according to ASTM C1260-94 and ASTM C1567-07, other specimens were cured in water. The length changes were measured during the curing (a test for the risk of the alkali-silica reactivity). Furthermore, a three-point-bending test was performed on these specimens to obtain the fracture parameters, which were determined using a double-K fracture model. It was found that the type of specimen curing has a significant effect on the volume changes and a moderate influence on the elasticity modulus, the crack initiation and fracture-toughness values.

Keywords

cement-based composite, slag, fly ash, alkali-silica reaction, crack initiation, double-K fracture model

Authors

HAVLÍKOVÁ, I.; BÍLEK, V.; TOPOLÁŘ, L.; ŠIMONOVÁ, H.; SCHMID, P.; KERŠNER, Z.

RIV year

2015

Released

23. 7. 2015

Publisher

Institute of Metals and Technology

Location

Ljubljana

ISBN

1580-2949

Periodical

Materiali in tehnologije

Year of study

49

Number

4

State

Republic of Slovenia

Pages from

557

Pages to

561

Pages count

5

BibTex

@article{BUT115359,
  author="Ivana {Havlíková} and Vlastimil {Bílek} and Libor {Topolář} and Hana {Šimonová} and Pavel {Schmid} and Zbyněk {Keršner}",
  title="Modified Cement-based Mortars: Crack Initiation and Volume Changes",
  journal="Materiali in tehnologije",
  year="2015",
  volume="49",
  number="4",
  pages="557--561",
  issn="1580-2949"
}