Xrayl :

Hubbard, Camden R.; Stewart, J. M.; Zhang, Y; Morosin, B.; Venturini, E. L.

doi:10.6028/nist.ir.88-3850

Cited by 2 publications

(1 citation statement)

References 4 publications

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“…Narayanan et al [6], found that re ected GPR amplitude can indicate possible corrosion in steel rebars. Hubbard et al [7] investigated the difference between GPR signals collected before and after accelerated rebar corrosion for 10 days. It was found that the GPR amplitude was affected, and the two-way travel time (TWTT) was in uenced by the moisture introduced during the accelerated corrosion process.…”

Section: Introductionmentioning

confidence: 99%

Experimental Detection of Embedded Rebar Corrosion in Concrete with Ground Penetrating Radar

Jalal,

Yazdani,

Beneberu

et al. 2024

Preprint

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Reinforced concrete structures have been extensively investigated using Ground Penetrating Radar (GPR) for qualitatively analyzing corrosion-induced degradation. However, no reliable quantitative model exists for the corrosion evaluation of the embedded steel rebars. Such corrosion may significantly impact the strength, serviceability and long-term durability of concrete structures. This study involved an experimental work to determine the relationship between the rebar corrosion quantity and the maximum amplitude as well as the two-way travel time (TWTT) of the GPR electromagnetic wave. A direct current was impressed into embedded steel rebars in concrete beams immersed in a 5% saltwater solution to induce accelerated corrosion. GRP data were collected before saline submersion and at 10-day intervals. A multivariate regression equation with high reliability was developed to estimate corrosion-indued rebar mass loss with independent variables, including concrete cover, rebar diameter, age of the reinforced concrete, concrete strength and GPR scanning parameters.

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Section: Introductionmentioning

confidence: 99%

Experimental Detection of Embedded Rebar Corrosion in Concrete with Ground Penetrating Radar

Jalal,

Yazdani,

Beneberu

et al. 2024

Preprint

View full text Add to dashboard Cite

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The Importance of Consistent 1/d Scans in Determining Size and Strain by Powder Diffraction Profile Analysis

et al. 1989

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This paper reports and discusses the results of a computer modeling study on powder diffraction profile analysis for crystallite size and strain of polycrystalline materials. The results of this computer modeling show that if the spans of diffraction profiles in reciprocal space (1/d) are not carefully chosen, an overestimation on size and an underestimation on strain may result in analysis by both the Warren-Averbach and the Hall-Williamson methods. A general way to eliminate such errors based on profile fitting and regeneration is presented and discussed in this paper.

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Xrayl :

Cited by 2 publications

References 4 publications

Experimental Detection of Embedded Rebar Corrosion in Concrete with Ground Penetrating Radar

Experimental Detection of Embedded Rebar Corrosion in Concrete with Ground Penetrating Radar

The Importance of Consistent 1/d Scans in Determining Size and Strain by Powder Diffraction Profile Analysis

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