Assessment of in situ characteristic concrete strength

Pucinotti, Raffaele

doi:10.1016/j.conbuildmat.2013.02.041

Cited by 43 publications

(26 citation statements)

References 2 publications

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“…This is due to the fact that the Schmidt curve refers to a ''standard concrete'' [4]; its simple shift, obtained applying the Alternative 2 of EN13791, is not able to estimate, however, the shape of the regression curve obtained by Eq. (5). A better estimate may be obtained by selecting, among the equations of literature, that with a slope similar to the experimental data.…”

Section: Surface Hardness Methodsmentioning

confidence: 97%

“…It introduces some corrective coefficients in order to take into account the disturbance caused on structural parts during drilling operations depending on the geometry of the drilled specimens, on the perforation direction, on the dimensions of the aggregates and so on. For further details see [5].…”

Section: Destructive Methodsmentioning

confidence: 99%

“…Recently, EN 13791 has provided a methodology for the estimation of the characteristic value of compressive strength. A new formulation able to estimate in situ characteristic concrete compressive strength can be found in [5]. The formulation, which uses a similar approach to that of the standard EN 13791, provides an estimate of the in situ characteristic strength of the concrete, starting from the average of the compressive strength measured by testing carried out on samples (cores) extracted from structural elements.…”

Section: Destructive Methodsmentioning

confidence: 99%

“…The parameters which influence the velocity of propagation of ultrasound waves are: (i) the entity of the load; (ii) the age of the concrete; (iii) the form and the dimension of the structure; (iv) the run length; (v) the presence of metallic reinforcements; (vi) the ratio water/cement; (vii) the state of strength, (viii) the temperature; (ix) the humidity of the concrete [4,5,9,11]. Fig.…”

Section: Ultrasonic Methodsmentioning

confidence: 99%

“…In this respect, a series of destructive laboratory tests on 359 cores were performed with the purpose of estimating the characteristic strength of in-situ concrete [5]. An analytical expression was introduced in order to estimate the characteristic in-situ compressive strength of concrete.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Reinforced concrete structure: Non destructive in situ strength assessment of concrete

Pucinotti

2015

Construction and Building Materials

107

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Section: Surface Hardness Methodsmentioning

confidence: 97%

Section: Destructive Methodsmentioning

confidence: 99%

Section: Destructive Methodsmentioning

confidence: 99%

Section: Ultrasonic Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Reinforced concrete structure: Non destructive in situ strength assessment of concrete

Pucinotti

2015

Construction and Building Materials

107

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Issues concerning the assessment of concrete compressive strength in existing buildings: Application to a case study

Cristofaro

Nudo

Tanganelli

et al. 2017

Structural Concrete

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The estimate of concrete compressive strength is a major aspect in the assessment of reinforced concrete existing structures since it involves safety issues. The method of extracting concrete cores from the buildings under investigation is considered in this paper. In the first part, a brief review concerning procedures proposed by international technical codes as well methods available in the scientific literature, is made. In particular, formulations proposed for the determination of the actual concrete strength, starting from the one obtained from laboratory tests on cores, are examined. Special attention is devoted to the various factors affecting the estimate of the actual strength and relative correction coefficients. In the second part, the considered procedures are applied to a case study concerning a school building in Tuscany; comparison among different formulations allows some considerations on the reliability of the adopted procedures.

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