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

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26110%2F15%3APU114051" target="_blank" >RIV/00216305:26110/15:PU114051 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.17222/mit.2014.114" target="_blank" >http://dx.doi.org/10.17222/mit.2014.114</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.17222/mit.2014.114" target="_blank" >10.17222/mit.2014.114</a>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20102 - Construction engineering, Municipal and structural engineering

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2015

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Materiali in tehnologije

ISSN

1580-2949

e-ISSN

1580-3414

Svazek periodika

49

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

SI - Slovinská republika

Počet stran výsledku

5

Strana od-do

417-421

Kód UT WoS článku

000354018700016

EID výsledku v databázi Scopus

2-s2.0-84929740132