2017
DOI: 10.1016/j.conbuildmat.2017.02.129
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Factors affecting the reliability of assessing the concrete strength by rebound hammer and cores

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Cited by 44 publications
(13 citation statements)
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“…Correct statistical analysis of the measured values is critical for evaluating Schmidt hammer tests. Alwash et al [24] analysed the influence of several factors on the reliability of rebound hammer test evaluation, such as within-test variability, variability of true compressive strength, number of test locations and cores used to determine the relationship between strength and the rebound number, way of choosing the test locations (random or conditional) and the model identification programme (regression or bi-objective). El Mir and Nehme [1] tested several hundred specimens focusing on the coefficient of variance in rebound values.…”
Section: Introductionmentioning
confidence: 99%
“…Correct statistical analysis of the measured values is critical for evaluating Schmidt hammer tests. Alwash et al [24] analysed the influence of several factors on the reliability of rebound hammer test evaluation, such as within-test variability, variability of true compressive strength, number of test locations and cores used to determine the relationship between strength and the rebound number, way of choosing the test locations (random or conditional) and the model identification programme (regression or bi-objective). El Mir and Nehme [1] tested several hundred specimens focusing on the coefficient of variance in rebound values.…”
Section: Introductionmentioning
confidence: 99%
“…In order to reduce the dispersion of test results induced by the heterogeneity of samples, a series of nondestructive detection methods, for example, density test, rebound strength test, and P-wave velocity measurement, were used for screening the samples [23,24]. e value ranges of density, rebound strength, and P-wave velocity of the samples after detection methods are 2.423-2.639 g/cm 3 , 40.9-46.7 MPa, and 4328-4820 m/s, respectively.…”
Section: Sample Preparationmentioning
confidence: 99%
“…No entanto, a utilização dessas curvas não é recomendada, uma vez que o esclerômetro pode não estar calibrado para a realização de ensaios em determinado tipo de concreto. O procedimento de execução mais correto é a obtenção de uma curva de correlação do concreto a ser inspecionado, a qual correlacine os resultados dos ensaios não destrutivos e a resistência à compressão do material (Breysse, 2012;Alwash , et al, 2016;Alwash, et al, 2017).…”
Section: Introductionunclassified