Nondestructive Determination of Strength of Concrete Incorporating Industrial Wastes as Partial Replacement for Fine Aggregate

Odimegwu, Temple Chimuanya; Kaish, A. B. M. A.; Zakaria, Ideris; Abood, Manal Mohsen; Jamil, Maslina; Ngozi, Kayode-Ojo

doi:10.3390/s21248256

Cited by 7 publications

(7 citation statements)

References 23 publications

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“…For the evaluation of measurement uncertainty during estimation of compressive strength using rebound hammer both type A and type B components of uncertainty are considered as per the GUM approach. These uncertainty components consist of parameters like repeatability, calibration, moisture content and bias (15,16) . https://www.indjst.org/…”

Section: Methodsmentioning

confidence: 99%

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Robust Analysis of Various Measurement Uncertainty Parameters in Rebound Hammer Test

Awachat,

Dakre,

Charkha

et al. 2023

IJST

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Objective:The major objective of the proposed work is to determine the concrete's expected compressive strength by evaluating the consistency of concrete using Rebound Hammer Test. Further, the determination of the quality of one component of the concrete relates to the quality of another component based on the concrete meeting criteria established by the several standards in the literature. Methods: Laboratory professional's needs to properly correlate the compressive strength with the observations of rebound hammer normally called as rebound index. Since test readings are affected by number of parameters, measurement uncertainty plays vital role in deciding the output of test. Analytical method as per the guidelines of GUM (Guide to the Expression of Uncertainty in Measurement) and Monte Carlo simulation is used for obtaining uncertainty value in measurement of compressive strength. As per the proposed test procedure total 10 test blocks made up of concrete are selected for testing. For each block 6 readings are taken using rebound hammer. The rebound index (RI) obtained in reading is then converted to compressive strength (CS) value. Findings: The obtained test results are compared with the simulation values obtained from Monte Carlo simulation. The results shows that the magnitude of evaluated uncertainty values are on higher side as compare to simulated uncertainty values. Novelty and applications: In this paper uncertainty related to compressive strength measurement using rebound hammer test is evaluated by considering the effects of various parameters related to instrument, test procedure and test environment. This obtained uncertainty values provides reliable information about compressive strength of concrete structures.

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Section: Methodsmentioning

confidence: 99%

“…Individual standard uncertainties of repeatability, calibration, moisture content and bias determined by Type A and Type B assessments needs to be combined together to obtain the final combined standard uncertainty (UC ) as per the equation ( 6) (9,(13)(14)(15)(16) .…”

Section: Combined Standard Uncertaintymentioning

confidence: 99%

Robust Analysis of Various Measurement Uncertainty Parameters in Rebound Hammer Test

Awachat,

Dakre,

Charkha

et al. 2023

IJST

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“…along with the compressive strength of some tested materials obtained from industrial waste. [14] 4.5 -17.5 Concrete with alum sludge (treated in a furnace at 200 °C) [29] 24.0 -48.0 Concrete with Lime Stone [29] 33.0 -53.0 Concrete with quarry dust [29] 36.0 -65.0 Concrete with solidified wastewater treatment sludge [30] 3.9 -5.8…”

Section: Figure 2 Granulometric Composition Of Solidified Powder Frac...mentioning

confidence: 99%

Utilization of solidified industrial hazardous waste in construction: A case study

Šerović

Jelić

Matic

et al. 2023

Hem Ind

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Utilization possibilities of solidified fractions of industrial hazardous waste obtained by mixing with inert materials in construction were investigated. Waste mineral oils, water-hydrocarbon emulsions mixture, and waste filter cakes from the physico-chemical treatment of wastewater generated by washing of patterned rollers for a printing machine, were used as models of industrial hazardous waste in the solidification process. Investigation comprised preparation of concrete and asphalt mixtures for further testing. The solidified powder was analyzed regarding the granulometric composition, while the obtained concrete samples were further subjected to compressive strength determination, whereas the asphalt mixtures were tested in the context of potential waterproofing materials. According to the obtained leaching test results, all the samples met the required conditions for further application. Compressive strength test results were in the range of 8.7 - 22.6 MPa. Still, the measured compressive strength values were lower than expected, which is explained using solidified powder fractions of smaller grain size. According to the results, it can be concluded that the investigated mixtures cannot be used for structural building elements, but their usage is recommended for elements such as pavements, roadside, path cubes, concrete haberdashery, etc. Asphalt mixtures showed acceptable properties in terms of mechanical, durability, and waterproofing tests.

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“…Non-destructive and micro-destructive testing methods for estimating the compressive strength of concrete have been studied extensively, and many methods have been put into practical use and standardized. The most commonly used NDT methods are a rebound hammer test [4][5][6][7] and ultrasonic pulse velocity [8][9][10][11][12][13][14]. A combination of those methods [15][16][17] is also widely used to evaluate the existing concrete structures.…”

Section: Introductionmentioning

confidence: 99%

A New Methodology to Estimate the Early Age Compressive Strength of Concrete Before Demolding

Narantogtokh,

Nishiwaki,

Takasugi

et al. 2024

Preprint

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Non-destructive testing has many advantages, such as the ability to obtain a large number of data without destroying existing structures. However, the reliability of the estimation accuracy and the limited range of applicable targets remains an issue. This study proposes to a novel pin penetration test method to determine the early age compressive strength of concrete before demolding. The timing of demolding and initial curing are determined according to the strength development of concrete. Therefore, it is important to determine the compressive strength at the early age before demolding at the actual construction site. The applicability of this strength estimation methodology at actual construction is investigated. Small test holes (12 mm in diameter) are prepared on the mold surface in real construction sites and mock-up specimens in advance. The pin is penetrated into these test holes to obtain the relationship between the compressive strength and the penetration depth. As a result, it is confirmed that the pin penetration test method is suitable to measure the early age compressive strength at actual construction site. This allows the benchmark values for compressive strength, necessary to avoid early frost damage, to be directly verified on the concrete structural members at the construction site. For instance, the compressive strengths of greater than 5 MPa and 10 MPa can be confirmed by the penetration depths benchmark values of 8.0 mm and 6.7mm or less, respectively.

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Nondestructive Determination of Strength of Concrete Incorporating Industrial Wastes as Partial Replacement for Fine Aggregate

Cited by 7 publications

References 23 publications

Robust Analysis of Various Measurement Uncertainty Parameters in Rebound Hammer Test

Robust Analysis of Various Measurement Uncertainty Parameters in Rebound Hammer Test

Utilization of solidified industrial hazardous waste in construction: A case study

A New Methodology to Estimate the Early Age Compressive Strength of Concrete Before Demolding

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