Inspection, evaluation and repair monitoring of cracked concrete floor using NDT methods

Zoidis, N; Tatsis, Efthymios; Vlachopoulos, C; Gotzamanis, Anastasios; Clausen, Jesper Stærke; Aggelis, Dimitrios G.; Matikas, Theodore E.

doi:10.1016/j.conbuildmat.2013.06.082

Cited by 33 publications

(6 citation statements)

References 1 publication

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“…Another study has shown that the depth of crack can be approximated using ultrasound pulses. In this study, a depth of approximately 20% higher than the actual depth has been measured for cracks with a crack width of 0.2-10 mm [15].…”

Section: Non-destructive Testing (Ndt) Of Cracks In Concretementioning

confidence: 97%

Controlled Creating of Cracks in Concrete for Non-destructive Testing

et al. 2018

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The non-destructive assessment of cracks in concrete is a common task for which non-destructive evaluation solutions have been published. Primarily, these tests have been carried out on artificial cracks that have been created by using notches instead of natural cracks. This study evaluates a procedure designed to create reproducible and controlled cracks in concrete. The procedure is based on using expanding mortar in a series of blind holes. This is done in combination with carefully aligned reinforcement to guide the direction of the crack development. The depth of the crack is also controlled by reinforcement. Crack depth varies statistically in the range of the maximum aggregate size (16 mm) used for concrete.

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Section: Non-destructive Testing (Ndt) Of Cracks In Concretementioning

confidence: 97%

Controlled Creating of Cracks in Concrete for Non-destructive Testing

et al. 2018

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“…The arrival time, t 2 , of the diffracted P-wave can be obtained by identifying the initial disturbance in the waveform recorded at the second receiver. Thus, the shortest travel time for P-wave from the impact point to the second receiver can be obtained as t = t2 -(t1 -H0/CR) = t2 -t1 + H0/CR (1) Knowing the P-wave speed, C P , in concrete, the shortest travel length of P-wave from the impact point to the second receiver can be calculated as C P × t. If the distances from the crack to the impact point and the second receiver are H1 and H2 respectively, the depth, d, of the vertical surface-opening crack can be determined by the following equation:…”

Section: Time-of-flight Diffraction Techniquementioning

confidence: 99%

Use of Stress Wave to Evaluate The Repair Quality of Concrete Crack

et al. 2017

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Abstract. The objective of this paper is to develop a nondestructive test technique based on stress wave propagation for evaluating the repair quality of concrete. Concrete structures frequently exist various types of cracks due to inferior environment and excessive loading. There are several crack repairing technique used in concrete construction. Epoxy-injection is the one used mostly in crack repairing. In this paper, a newly developed technique based on the stress wave was used to evaluate the repair quality of concrete crack. Numerical results show that the stress wave propagation of the impact-echo tests is capable of identifying the infill of epoxyinjection in the crack of repaired structures. The new technique under development has a high potential for evaluation of the quality of the repaired cracks.

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“…The durability of concrete structures depends on the proper bond between the added concrete layer and the existing concrete substrate layer [1][2][3][4][5]. The measure of this bond is the value of pull-off adhesion f b.…”

Section: Introductionmentioning

confidence: 99%

Non-destructive identification of pull-off adhesion between concrete layers

Sadowski

2015

Automation in Construction

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Inspection, evaluation and repair monitoring of cracked concrete floor using NDT methods

Cited by 33 publications

References 1 publication

Controlled Creating of Cracks in Concrete for Non-destructive Testing

Controlled Creating of Cracks in Concrete for Non-destructive Testing

Use of Stress Wave to Evaluate The Repair Quality of Concrete Crack

Non-destructive identification of pull-off adhesion between concrete layers

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