CAPO-TEST to Estimate Concrete Strength in Bridges

Moczko, Andrzej; Carino, Nicholas J.; Petersen, Claus Germann

doi:10.14359/51689242

Cited by 18 publications

(15 citation statements)

References 6 publications

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“…When processing test results [24,25], performed by the method of separation with spalling, strength of concrete on the site Ri was calculated according to the formula:…”

Section: Figmentioning

confidence: 99%

Application of non-destructive methods of control within the inspection of concrete structures

Zabelina

2021

E3S Web Conf.

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This paper discusses the main non-destructive quality control methods that are used in the inspection of both under construction and already existing concrete structures. Purpose of the work: to conduct a comparative analysis of non-destructive testing methods, to consider a practical example of their application in the survey of a building being reconstructed, to identify the essential points of the organization of non-destructive quality control, which must be taken into account when developing a site work execution program. Materials and methods: the application of methods of non-destructive testing, separation with spalling and the ultrasonic method of surface sounding, is considered in detail. Results: the results of the inspection of structures by the methods separation with spalling and the ultrasonic method of surface sounding are presented, the test conditions, basic requirements for correct data interpretation, and the necessary calculations are given. Recommendations are given for planning the quality control of concrete structures at the stage of organizational and technological preparation of construction. Conclusions: non-destructive quality control finds its application both in the construction of new facilities and in the inspection of existing buildings. The choice of the survey method is made at the stage of development of a site work execution program, while it is necessary to take into account the features and scope of application of a particular method, probable measurement error, it is also possible to use several methods in combination.

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“…When processing test results [24,25], performed by the method of separation with spalling, strength of concrete on the site Ri was calculated according to the formula:…”

Section: Figmentioning

confidence: 99%

Application of non-destructive methods of control within the inspection of concrete structures

Zabelina

2021

E3S Web Conf.

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“…The measurement can be used to estimate in-situ strength, to determine when post tensioning can proceed, when formworks can be removed, when winter protection and curing can be terminated, or for comparative testing. Several investigations have shown that the "pull-out" measurements provides an accurate estimate of "in-situ" strength because the peak pullout force has a well-defined correlation to compressive strength measured using standard cylinders or cubes [13,14] and that a general correlation (Fig.6) can be used with reasonable accuracy. A special correlations are only required for lightweight concretes or other concretes with less common constituents.…”

Section: Fig5 General Principles Of the Pull-out Testmentioning

confidence: 99%

In-situ examination of the concrete quality European standard approach

Moczko

2018

MATEC Web Conf.

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The paper presents overview of European standard procedures related to determining concrete quality basing on the in-situ testing. Among other things following testing methods have been discussed: testing cored specimens, rebound measurements, “pull-out” method, “pull-off” method, ultrasonic pulse velocity measurements. Testing conditions, guidelines for calibration and crucial requirement for proper interpretation of the data obtained by means of rebound and ultrasonic measurements were shown. Independently “pull-out” and “pull-off” NDT methods have been introduced. Finally, the European procedures of assessment of in-situ concrete compressive strength in structures have been also presented.

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“…Estimation of the in situ mechanical properties of existing concrete structures is imperative for evaluating their structural quality throughout their service lives. Among the currently available testing methods, rebound hammer tests, the core-drilling method, and postinstalled pull-out tests are the most widely used for assessing the compressive strength of concrete [1,2]. Compared with the core-drilling method [3], using the rebound hammer test and the postinstalled pull-out test to estimate the in-place strength of concrete allows larger amounts of data to be collected without a significant impact on the structure, resulting in higher reliability.…”

Section: Introductionmentioning

confidence: 99%

Revised Rebound Hammer and Pull‐Out Test Strength Curves for Fiber‐Reinforced Concrete

Deng

Sun

Liu

et al. 2020

Advances in Civil Engineering

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Rebound hammer tests and postinstalled pull-out tests are commonly used for evaluating the compressive strength of ordinary concrete, and the strength of concrete is estimated by strength curves. However, using these strength curves to predict the compressive strength of carbon fiber-reinforced concrete (CFRC), polypropylene fiber-reinforced concrete (PFRC), and carbonpolypropylene hybrid fiber-reinforced concrete (HFRC) may lead to considerable uncertainties. erefore, this study revises the strength curves derived from rebound hammer tests and postinstalled pull-out tests for ordinary concrete. 480 specimens of fiberreinforced concrete (FRC) of six strength grades are examined. Standard cube compressive strength tests are used as a reference, and the results of various regression models are compared. e linear model is determined as the most accurate model for postinstalled pull-out tests, whereas the power model is the most accurate for rebound hammer tests. e proposed strength curves have important applications for FRC engineering of the postinstalled pull-out tests and rebound hammer tests.

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CAPO-TEST to Estimate Concrete Strength in Bridges

Cited by 18 publications

References 6 publications

Application of non-destructive methods of control within the inspection of concrete structures

Application of non-destructive methods of control within the inspection of concrete structures

In-situ examination of the concrete quality European standard approach

Revised Rebound Hammer and Pull‐Out Test Strength Curves for Fiber‐Reinforced Concrete

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