Bestimmung der charakteristischen Betonfestigkeiten in Bestandstragwerken

Loch, M.; Stauder, Florian; Schnell, Jürgen

doi:10.1002/best.201100069

Cited by 25 publications

(41 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…According to References 6,12, the line "V x unknown" is to be used to evaluate a test for a survey of existing structures, whereby satisfactory results can only be expected from n = 8. 15 The method with unknown coefficients of variation can; however, not be used to evaluate results of nondestructive load tests, since the tested components are not tested destructively, but limited to test target load.…”

Section: Methods According To Eurocodementioning

confidence: 99%

“…In contrast to classical statistics, Appendix D uses the so‐called Bayesian method, which can be used to take prior information into account, and thus improve estimation. Please refer to References for background information on the evaluation methodology.…”

Section: Theoretical Safety Concepts For Test‐based Designmentioning

confidence: 99%

“…When Appendix D is applied, the distribution function of the population must be specified before determining the material property. Notes on selection are given in Reference . The parameters mean value and SD (coefficient of variation) must be determined from the sample.…”

Section: Theoretical Safety Concepts For Test‐based Designmentioning

confidence: 99%

See 2 more Smart Citations

Methods to evaluate test results based on small sample sizes

Marx

Grünberg

Schacht³

2019

Civil Engineering Design

View full text Add to dashboard Cite

For the assessment of the load bearing capacity of existing constructions, information is often required that can only be obtained by building substance inspection and testing. The most integral form of the experimental evaluation in an existing structure is the classic load test, since the structural safety can be demonstrated directly and non‐destructively. However, it is problematic to transfer the results of one or a small number of experiments to other untested components. This article discusses existing evaluation methods and introduces a new approach to account for uncertainties when transferring test results to untested components.

show abstract

Section: Methods According To Eurocodementioning

confidence: 99%

Section: Theoretical Safety Concepts For Test‐based Designmentioning

confidence: 99%

See 1 more Smart Citation

Methods to evaluate test results based on small sample sizes

Marx

Grünberg

Schacht³

2019

Civil Engineering Design

View full text Add to dashboard Cite

show abstract

“…In the weaknesses and limitations of the former statistic evaluation/approximation procedure according to EN 13791:2007 and the new German approximation procedure according to DIN EN 13791/A20:2017 are described. Based on these investigations, characteristic values x k of concrete compressive strength or tensile strength were determined by means of a logarithmic normal distribution with regard to Equation according to EN 1990—Annex D…”

Section: Experimental Investigations On Historical Concrete Structurementioning

confidence: 99%

Correlation between compressive and tensile strength of old concretes: Applicability of the relationship described in EN 1992‐1‐1

Weber

2018

Structural Concrete

View full text Add to dashboard Cite

In the design of new structures, EN 1992-1-1 normatively regulates the correlation between the compressive strength and tensile strength of concrete, in accordance with EN 206-1. However, as there are many time-and load-dependent impacts on existing structures, the relationship described by EN 1992-1-1 cannot be assumed without any further observations for existing structures. At the moment, there is no comprehensive investigation on the influences of, for example, subsequent hardening and carbonation on the concrete compressive or tensile strength. The tensile strength of concrete defined in EN 1992-1-1 is based on a water storage and a testing age of 28 days. Furthermore, the in-situ tensile strength is affected by micro-crack formation cause of internal stresses due to outflow of hydration heat, for example. Generally, there is a different influence of micro-crack formation on the tensile strength of concrete than on the compressive strength of concrete. The actual value of the in-situ tensile strength of concrete affects the shear force resistance and the load-bearing capacity of anchors with concrete cone failure as decisive failure mode. Within the framework of a research project (

show abstract

“…In order to convert 75 mm cube strength to 150 mm cube strength, the standardized characteristic compressive strength according to EN 1992 [10], a conversion factor of 0.84 can be derived from [7]. The conversion factor derived in GOAL for OPC mixed with seawater was 0.85 to 0.93 depending on the subset considered.…”

Section: Materials Property Tests 41 Compressive Strengthmentioning

confidence: 99%

Seawater‐mixed Ordinary Portland Cement – a neat solution

Bartminn¹,

Billington²,

Powell

et al. 2018

Stahlbau

View full text Add to dashboard Cite

Mit Seewasser angemachter Ordinary Portland Cement (OPC) – eine elegante Lösung. Materialeigenschaften für die Bemessung von Offshore‐Groutverbindungen mit OPC: Die Historische Entwicklung der Bemessungsgrundlagen für konzentrische Groutverbindungen wird dargestellt. An Hand einer statistischen Auswertung von umfangreichen Material Tests an mit Seewasser angemachten OPC Zementleim wird der Zusammenhang zu semi‐probabilistischen Bemessungsvorschriften hergestellt und Empfehlungen zur Anwendung von Konformitätskriterien gegeben. Die Auswirkungen hoher Hydrationstemperaturen werden dargestellt, während die Testreihen keine negativen Auswirkungen auf die Festigkeitsentwicklung für die betrachteten Zeiträume feststellen konnten.

show abstract

Bestimmung der charakteristischen Betonfestigkeiten in Bestandstragwerken

Cited by 25 publications

References 1 publication

Methods to evaluate test results based on small sample sizes

Methods to evaluate test results based on small sample sizes

Correlation between compressive and tensile strength of old concretes: Applicability of the relationship described in EN 1992‐1‐1

Seawater‐mixed Ordinary Portland Cement – a neat solution

Contact Info

Product

Resources

About