Attenuation Coefficient of Reactive Powder Concrete Using Different Energies.

Majeed, WasanZ.; Naji, N A Rasheed; Mohammed, ShathaD.; Fawzi., NadaMahdi

doi:10.21474/ijar01/1161

Cited by 7 publications

(5 citation statements)

References 5 publications

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“…Hence, it is so difficult to observe a complete descending stage. To solve this problem, steel fibers are usually added to improve ductility [6]. Many studies collectively demonstrated that adding steel fibers to RPC can significantly improve its mechanical properties, including compressive strength, flexural strength, toughness, and crack resistance; moreover, highlighting the positive influence of steel fibers on enhancing the performance and durability of RPC [2,5,[7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Structural Behavior of Reactive Powder Concrete under Harmonic Loading

et al. 2023

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Industrial buildings usually are designed to sustain several types of load systems, such as dead, live, and dynamic loads (especially the harmonic load produced by rotary motors). In general, these buildings require high-strength structural elements to carry the applied loads. Moreover, Reactive Powder Concrete (RPC) has been used for this purpose because of its excellent mechanical strength and endurance. Therefore, this study provides an experimental analysis of the structural behaviors of reinforced RPC beams under harmonic loads. The experimental program consisted of testing six simply supported RPC beams with lengths of 1500 mm, widths of 150 mm, and thicknesses of 200 mm under harmonic loading with varied frequencies between 10 and 20 Hz. Different steel fiber ratios of 0%, 0.5%, 0.75%, 1.0%, 1.5%, and 1.75% were provided in the concrete mixes to explore the effect of steel fibers on the dynamic behavior of these beams. Except for the steel fiber volume fraction, all of the examined specimens shared the same material attributes and reinforcing details. The outcomes proved the positive effect of adding steel fibers on the dynamic response under the effect of harmonic loading. The optimum volume fraction of steel fibers was characterized by a percentage of 1.5%. Moreover, the vibration amplitude was more affected by the steel fibers than the support reactions. The inertial force increased as the harmonic loading duration increased. This increase in the inertial force by the load duration was enhanced after adding the steel fibers. However, this enhancement started to decline after increasing the steel fiber content to 1.75%.

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Section: Introductionmentioning

confidence: 99%

Structural Behavior of Reactive Powder Concrete under Harmonic Loading

et al. 2023

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“…The concrete industry is aware of these materials' ability to enhance certain of the characteristics of regular concrete [17]. By testing linear and mass attenuation coefficients using several radiation sources with varying energies, Wasan et al [18] investigate the potential of employing reactive powder concrete as a shielding material. Reactive powder concrete was shown to be capable of absorbing beta particles and gamma rays without significantly reducing the specimen's compressive strength.…”

Section: Introductionmentioning

confidence: 99%

Investigation of the Impact of Glass Waste in Reactive Powder Concrete on Attenuation Properties for Bremsstrahlung Ray

Majeed,

Aboud,

Naji

et al. 2023

East Eur. J. Phys.

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Reactive Powder Concrete (RPC) is one of the most advanced recent high compressive strength concrete. This work explored the effects of using glass waste as a fractional replacement for fine aggregate in reactive powder concrete at levels of 0%, 25%, 50%, and 100%. Linear and mass attenuation coefficients have been calculated as a function of the sample's thickness and bremsstrahlung energy. These coefficients were obtained using energy selective scintillation response to bremsstrahlung having an energy ranging from (0.1-1.1) MeV. In addition, the half-value thickness of the samples prepared has been investigated. It was found that there is a reversal association between the attenuation coefficient and the energy of the bremsstrahlung ray. The results showed that, with the exception of the specimen with a partial replacement of 25% glass waste, adding fine aggregate in part by glass waste had a negative impact on the reactive powder concrete's attenuation properties. That means the sample’s density can be improved with the glass waste content ratio to 25%. Also, the bremsstrahlung radiation shielding capabilities of reactive powder concrete can be enhanced using glass waste of not more than 25%.

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“…This, mainly, produced a very dense and low porosity material compared with other types of traditional concrete. Therefore; it can be considered as a good and economic choice for isolation and containment of nuclear waves [2,3]. Several studies were published regarding the effect of partial replacements of different materials instead of cement or sand [4, 5 and 6].…”

Section: Introductionmentioning

confidence: 99%

Compressive Strength Performance of Reactive Powder Concrete Using Different Types of Materials as a Partial Replacement of Fine Aggregate

Mohammed

Awad

Aboud

2020

KEM

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Reactive Powder Concrete (RPC) can be incorporate as a one of the most important and progressive concrete technology. It is a special type of ultra-high strength concrete (UHSC) that’s exclude the coarse aggregate from its constitutive materials. In this research an experimental study had been carried out to investigate the effect of using three types of materials (porcelain aggregate) and others sustainable materials (glass waste and granular activated carbon) as a partial replacement of fine aggregate. Four percentages had considered (0, 10, 15 and 20) % to achieve better understanding for the influence of these materials upon the compressive strength of RPC. Four curing ages had included in this study, these are; 7, 28, 60 and 90 days. The outcomes of the experimental works improved that using porcelain aggregate as a partial replacement had an advanced effect on the compressive strength for all the adopted percentages and for all the studied curing ages. The maximum modification that’s obtained in case of porcelain aggregate was (24.14) % at age (90) days for 20% replacement. Using glass waste caused an increase in the overall values of the compressive strength for all the adopted replacements with less efficient than porcelain to reached (20.69) % at age (90) days for 20% replacement. Regarding the granular activated carbon, only (10%) replacement had a positive influence on the compressive strength to reached (13.16) % while the others caused a reduction in the compressive strength reached to (29.13)% for 20% replacement.

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Attenuation Coefficient of Reactive Powder Concrete Using Different Energies.

Cited by 7 publications

References 5 publications

Structural Behavior of Reactive Powder Concrete under Harmonic Loading

Structural Behavior of Reactive Powder Concrete under Harmonic Loading

Investigation of the Impact of Glass Waste in Reactive Powder Concrete on Attenuation Properties for Bremsstrahlung Ray

Compressive Strength Performance of Reactive Powder Concrete Using Different Types of Materials as a Partial Replacement of Fine Aggregate

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