Prompt gamma analysis of chlorine in concrete for corrosion study

Naqvi, A.A.; Nagadi, M.M.; Al‐Amoudi, Omar S. Baghabra

doi:10.1016/j.apradiso.2005.07.015

Cited by 19 publications

(13 citation statements)

References 10 publications

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“…It is expected to observe prompt gamma-ray peaks from the capture of thermal neutrons in specimens at energies characteristic of Si (3.539 and 4.935 MeV), Ca (1.942 and 6.420 MeV), Fe (7.631 and 7.646 MeV), and Al (7.724 MeV). [9][10][11][12] Figure 2 shows prompt gamma-ray spectra from 14-cm-long BFS cement concrete specimens with 4, 5, 7, 8.5, and 9.5 cm radii taken with a 4-cm-thick front moderator on an enlarged scale with energies higher than 3.0 MeV. The full energy (F) and single escape (S) peaks of the prompt gamma rays are clearly marked in Fig.…”

Section: Experimental Validation Of Simulation Resultsmentioning

confidence: 99%

“…[9][10][11][12] The optimum size of the BFS cement concrete specimen was determined from the prompt gamma-ray yield calculations as a function of specimen radius and length. The radius and length of the cylindrical concrete specimen were determined from the maximum yield of the prompt gamma rays measured at the NaI detector.…”

Section: Results Of Monte Carlo Simulationsmentioning

confidence: 99%

“…Both the measurements were carried out using the KFUPM PGNAA setup. [9][10][11][12] The data were acquired with the 4-cm-thick front moderator of the PGNAA setup. A pulsed beam of 2.8 MeV neutrons was produced via D(d, n) reaction using 200 keV deuteron beams.…”

Section: Prompt Gamma Yield Measurements From Bfs Cement Concrete Spementioning

confidence: 99%

“…[8][9][10] In this paper, the results of a study conducted to evaluate the concentration of BFS in cement concrete specimens using the PGNAA technique are reported for the first time. BFS is obtained by quenching molten iron slag (a by-product of iron and steel making) from a blast furnace in water or stream to produce a glassy, granular product that is then dried and ground into a fine powder.…”

Section: Introductionmentioning

confidence: 99%

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Prompt Gamma-Ray Analysis of Steel Slag in Concrete

Naqvi

Garwan

MOHIUDDIN

et al. 2009

Journal of Nuclear Science and Technology

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Blast furnace slag (BFS) is added to Portland cement concrete to increase its durability, particularly its corrosion resistance. Monitoring the concentration of BFS in concrete for quality control purposes is desired. In this study, the concentration of BFS in concrete was measured by utilizing an accelerator-based prompt gamma-ray neutron activation analysis (PGNAA) setup. The optimum size of the BFS cement concrete specimen that produces the maximum intensity of gamma rays at the detector location was calculated through Monte Carlo simulations. The simulation results were experimentally validated through the gamma-ray yield measurement from BFS cement concrete specimens having different radii. The concentration of BFS in the cement concrete specimens was assessed through calcium and silicon gammaray yield measurement from cement concrete specimens containing 5 to 80 wt% BFS. The yield of calcium gamma rays decreases with increasing BFS concentration in concrete while the yield of silicon gamma rays increases with increasing BFS concentration in concrete. The calcium-to-silicon gamma-ray yield ratio has an inverse relation with BFS concentration in concrete.

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Section: Experimental Validation Of Simulation Resultsmentioning

confidence: 99%

Section: Results Of Monte Carlo Simulationsmentioning

confidence: 99%

Section: Prompt Gamma Yield Measurements From Bfs Cement Concrete Spementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Prompt Gamma-Ray Analysis of Steel Slag in Concrete

Naqvi

Garwan

MOHIUDDIN

et al. 2009

Journal of Nuclear Science and Technology

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“…치근 단 수술이나 치아 재식시 치근단 봉쇄를 위한 sealing 22) , 수 직 파절된 치근의 접착 23) , 노출 치수의 직접 복조 24 16,26,27) . 그러나, chloride 이온이 수분의 존재하에서 금속의 부식을 촉진할 수 있으며 28) , 칼슘 이온 유리를 증가시켜 재료의 용해도를 증가시킬 가능성이 . 또한, 경화 시간이 단축된다 해도 여전히 30분 이상 으로 길고 29,30) , …”

Section: ⅰ 서 론unclassified