Detail publikace
Modified Cement-based Mortars: Crack Initiation and Volume Changes
HAVLÍKOVÁ, I. BÍLEK, V. TOPOLÁŘ, L. ŠIMONOVÁ, H. SCHMID, P. KERŠNER, Z.
Originální název
Modified Cement-based Mortars: Crack Initiation and Volume Changes
Anglický název
Modified Cement-based Mortars: Crack Initiation and Volume Changes
Jazyk
en
Originální abstrakt
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.
Anglický abstrakt
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.
Dokumenty
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",
annote="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.",
address="Institute of Metals and Technology",
chapter="115359",
howpublished="print",
institution="Institute of Metals and Technology",
number="4",
volume="49",
year="2015",
month="july",
pages="557--561",
publisher="Institute of Metals and Technology",
type="journal article in Web of Science"
}