Combined Use of Non-Destructive Tests for Assessment of Strength of Concrete in Structure

Jain, Akash; Kathuria, Ankit; Kumar, Adarsh; Verma, Yogesh Kumar; Murari, Krishna

doi:10.1016/j.proeng.2013.03.022

Cited by 75 publications

(30 citation statements)

References 2 publications

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“…Some experimental studies have demonstrated that wave parameters such as the ultrasonic pulse velocity of P-waves are suitable to predict the dynamic elastic modulus of concrete and also S-waves for dynamic shear modulus. These parameters are proportional to the elastic and shear moduli of concrete and also to its compressive strength [4,5]. Other studies based on ultrasound propagation indicate that wave attenuation can be measured for various frequencies, in order to define different cementitious materials, distinguishing the microstructure, porosity, and other characteristics in both hardened [6][7][8][9] and fresh states [10].…”

Section: Introductionmentioning

confidence: 99%

Ultrasonic monitoring on glass fiber reinforced cement (GRC) bending test

Genovés¹,

Gosálbez²,

Miralles³

et al. 2015

Materials Characterisation VII

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Glass fiber reinforced cement (GRC) is a composite material based on Portland cement and alkali resistant glass fibers. This composite has good mechanical properties including toughness and flexural strength. The characterization of this material is carried out by four points bending test. During this test, elastic and plastic behaviour are identified from load vs. deflection curves. The scope of the research is to monitor this bending test by means on ultrasonic pulses in order to detect changes on the material and to correlate them with mechanical behaviour. In this sense, pulse velocity, energy, attenuation and non-linearities of the ultrasonic received signals have been analysed. First changes in energy, attenuation and nonlinearities were detected during the change from elastic to plastic step and the first pulse velocity change were observed during the plastic step.

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Section: Introductionmentioning

confidence: 99%

Ultrasonic monitoring on glass fiber reinforced cement (GRC) bending test

Genovés¹,

Gosálbez²,

Miralles³

et al. 2015

Materials Characterisation VII

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“…e rebound hammer method is a well-developed method for evaluating the compressive strength of on-site concrete [6]; however, its evaluation results can be affected by several factors. For example, its rebound number (RN) is affected by concrete-containing crumb rubber (rubbercrete) [7] and surface properties of hardened concrete such as carbonation [8,9], age [10], service conditions [11], and water-cement ratio (w/cm) [12]. Moreover, compared with ordinary concrete, the RN of basalt fiber-reinforced recycled concrete is relatively low and exhibits a unique strength curve [13].…”

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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“…But there is no much research on the mechanical properties such as destructive and non-destructive tests for concrete where cement is replaced by FA from 0% to 30% and fine aggregate is replaced by CS from 0% to 100%. But, attempts have been done to relate Rebound Hammer and Ultrasonic Pulse Velocity to concrete strength as demonstrated [19][20][21]. Results of these two methods are largely affected by many factors.…”

Section: Introductionmentioning

confidence: 99%