Conţinutul numărului revistei |
Articolul precedent |
Articolul urmator |
285 2 |
Ultima descărcare din IBN: 2023-08-11 13:19 |
Căutarea după subiecte similare conform CZU |
691.32:006 (1) |
Building materials. Building components (60) |
Standardization of products, operations, weights, measures and time (81) |
SM ISO690:2012 CROITORU, Gheorghe. Compression strengths correspondence of concretes according to their classes and marks. In: Journal of Engineering Sciences, 2022, vol. 29, nr. 2, pp. 116-122. ISSN 2587-3474. DOI: https://doi.org/10.52326/jes.utm.2022.29(2).11 |
EXPORT metadate: Google Scholar Crossref CERIF DataCite Dublin Core |
Journal of Engineering Sciences | |||||
Volumul 29, Numărul 2 / 2022 / ISSN 2587-3474 /ISSNe 2587-3482 | |||||
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DOI: https://doi.org/10.52326/jes.utm.2022.29(2).11 | |||||
CZU: 691.32:006 | |||||
Pag. 116-122 | |||||
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Rezumat | |||||
The article presents the problems related to the application of the provisions of the new European standards EN for concrete production, after the withdrawal of the obsolete national standards GOST regarding the correspondence of the classes to the concrete marks. In the context of the application of harmonized standards, there has been a need to establish the correspondence of classes to concrete marks, in order to help design and construction companies to correctly establish the strength mark of concrete to the corresponding class of concrete. The concrete class establishes the normative resistance of concrete for the calculation of constructions, for the service limit state, the prismatic resistance to compression adopted as normative resistance. The ratio between concrete classes and marks, in terms of compressive strength, is determined by the normative coefficient of variation V = 13.5%. The degree of homogeneity of the quality of the concrete is determined according to the values of the standard deviation σ and the average compressive strength of the concrete. As a result of the research, intermediate classes of concrete have been identified, which are not indicated in the normative documents, related to the production of concrete. |
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Cuvinte-cheie basic parameters, coefficient of variation, compliance criteria, concrete class, concrete mark, compression strength, correspondence, medium values, standard deviation, parametri de bază, coeficient de variație, criterii de conformitate, clasa betonului, marca betonului, rezistență la compresiune, corespondență, valori medii, abatere standard |
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