Publication result 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
English Title
Modified Cement-based Mortars: Crack Initiation and Volume Changes
Type
WoS Article
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.
English 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
Key words in English
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
2016
Released
23.07.2015
Publisher
Institute of Metals and Technology
Location
Ljubljana
ISBN
1580-2949
Periodical
Materiali in Tehnologije
Volume
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"
}