High-Strength Concrete - NDT with Rebound Hammer - Influence of Aggregate on Test Results
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26110%2F14%3APU104073" target="_blank" >RIV/00216305:26110/14:PU104073 - isvavai.cz</a>
Výsledek na webu
<a href="http://dx.doi.org/10.1080/10589759.2014.914205" target="_blank" >http://dx.doi.org/10.1080/10589759.2014.914205</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1080/10589759.2014.914205" target="_blank" >10.1080/10589759.2014.914205</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
High-Strength Concrete - NDT with Rebound Hammer - Influence of Aggregate on Test Results
Popis výsledku v původním jazyce
Rebound hammer is the most frequently used non-destructive method for determination of concrete strength. Measurement results are influenced by various factors (components and composition of concrete, humidity or age), which are well known for normal-weight concrete. High-strength concrete differs in quality and the question is to which extent these factors influence the test results. Knowledge about influence of aggregate and results of measurements with Schmidt rebound hammer are stated. Test results and evaluation of compressive strength are considerably influenced by strength of parent material from which the coarse aggregate is made. Influence of granulometric curve is less important and for aggregate with strength over 90 MPa it is negligible. To determine compressive strength of high strength concrete with Schmidt rebound hammer, it is necessary to elaborate special calibration relations for aggregate with various strength of parent rock. Use of calibration relations elaborated for normal-weight concrete for determination of strength of HSC is problematic (different properties of aggregate and upper limit of calibration relations is 60 MPa). Shifting the upper limit of calibration relations for normal-weight concrete up to the maximal rebound value measured at testing HSC is not recommendable; values of compressive strength calculated in accordance with adjusted formulas are smaller than real strength of HSC.
Název v anglickém jazyce
High-Strength Concrete - NDT with Rebound Hammer - Influence of Aggregate on Test Results
Popis výsledku anglicky
Rebound hammer is the most frequently used non-destructive method for determination of concrete strength. Measurement results are influenced by various factors (components and composition of concrete, humidity or age), which are well known for normal-weight concrete. High-strength concrete differs in quality and the question is to which extent these factors influence the test results. Knowledge about influence of aggregate and results of measurements with Schmidt rebound hammer are stated. Test results and evaluation of compressive strength are considerably influenced by strength of parent material from which the coarse aggregate is made. Influence of granulometric curve is less important and for aggregate with strength over 90 MPa it is negligible. To determine compressive strength of high strength concrete with Schmidt rebound hammer, it is necessary to elaborate special calibration relations for aggregate with various strength of parent rock. Use of calibration relations elaborated for normal-weight concrete for determination of strength of HSC is problematic (different properties of aggregate and upper limit of calibration relations is 60 MPa). Shifting the upper limit of calibration relations for normal-weight concrete up to the maximal rebound value measured at testing HSC is not recommendable; values of compressive strength calculated in accordance with adjusted formulas are smaller than real strength of HSC.
Klasifikace
Druh
J<sub>imp</sub> - Článek v periodiku v databázi Web of Science
CEP obor
—
OECD FORD obor
20101 - Civil engineering
Návaznosti výsledku
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)
Ostatní
Rok uplatnění
2014
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
Nondestructive Testing and Evaluation
ISSN
1058-9759
e-ISSN
1477-2671
Svazek periodika
29
Číslo periodika v rámci svazku
3
Stát vydavatele periodika
GB - Spojené království Velké Británie a Severního Irska
Počet stran výsledku
14
Strana od-do
255-268
Kód UT WoS článku
000338008800001
EID výsledku v databázi Scopus
2-s2.0-84903304966