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·Akkurt et al [16] reported that the increment in barite aggregate which is a heavy aggregate determining the density of mixture has an importance on the design of satisfactory concrete shields against gamma rays Although the highest density concrete produced by use of heavy aggregates is generally desired in terms of shielding capability [17]
·Heavy weight concrete refers to the concrete with unit weight ≥ 2600 kg/m 3 which is produced using high density specific gravity ≥ aggregates such as barite magnetite hematite
·Barite concrete with density grade of 3 and strength grade of C30 was prepared by mixing with different fineness of fly ash The workability mechanical properties and long term high temperature performance of the prepared barite concrete were researched Results show that the workability of barite concrete is improved by mixing with fly ash and no segregation of
normal one The attenuation coefficient of concrete fc 25 with barite as aggregates and concrete with barite as coarse aggregate is cm 1 and cm 1 respectively; The attenuation coefficient of concrete fc 35 with barite as aggregates and concrete with barite as coarse aggregate is cm 1 and cm 1
·In applications of concrete for shielding against hazardous radiation or for being used as counterweight as well as in various other applications that involve the use of heavyweight concrete the most significant method of mix design involves the use of heavyweight aggregates Concrete mixes that were produced for this work contained iron ore steel mill
·The results showed that the replacement of cement with barite and hematite powder at all percentages reduced the compressive and flexural strengths of the concrete Their highest compressive strengths were at 10% cement content 106 and 109 MPa respectively These mixtures were as heavy as concrete They reported that although the UHPC
·Lead mine waste was used in heavy weight concrete • Lead mine waste as aggregate was replaced by Magnetite Limonite and Barite at rate of 25% 50% and 75% • Heavy weight concrete samples were prepared in C16/20 C25/30 and C35/45 classes • The mineralogical and petrographic properties of the aggregates were described •
·Shams et al make a concrete shield for gamma rays using barite and hematite gradation in separate mixed and multi layered forms and the study shows that the use of heavy aggregate not only
·The compressive strength of heavy weight concrete specimens made with different percentages of ferrophosphorus and normal aggregates steel powder and Nano silica powder was examined
·Heavy Concrete Barite serves as a dense aggregate in specialized concrete mixes This high density concrete finds use in counterweights ballast blocks and importantly radiation shielding Nuclear facilities power plants and medical complexes rely on barite concrete for its vital protective qualities
·Although the highest density concrete produced by use of heavy aggregates is generally desired in terms of shielding capability [17] it is known that an optimum barite to normal aggregate ratio allows better shielding performance in terms of simultaneous attenuation of gamma rays and neutrons [12] [18]
·Barite BaSO 4 gets its name from its high density in fact barite comes from the Greek barys which means is due to the high atomic weight of barium Ba Barite density reaches the value of at 26 °C; this value is close to that of some iron or lead ores such as hematite or global world production totaled million tonnes in 2012 and
·Heavy weight concrete HWC is one of the most used artificial materials for the embodiment of special infrastructures such as nuclear power medical nuclear science and industrial facilities Natural radioactivity of barite concrete shields containing commonly used supplementary materials Construct Build Mater 2020
·The results demonstrate a slight negative effect on fresh and hardened of SCC properties with increasing percentages of barite However concrete incorporating up to 80% barite fulfilled all of the EFNARC recommended criteria for SCC and the dry density of samples containing 80% barite was kg/m 3 Therefore the self compacting and
·Semantic Scholar extracted view of "Investigation of gamma radiation attenuation in heavy concrete shields containing hematite and barite aggregates in multi layered and mixed forms" by Taban Shams et al The primary objective of this research was to study the transmission of gamma radiation from heavyweight concrete containing barite
·Investigation of gamma radiation attenuation in heavy concrete shields containing hematite and barite aggregates in multi layered and mixed forms Author links open overlay panel Taban The comparison of LAC values of barite concrete with those of hematite concrete by considering measurement uncertainty Table 5 and Fig 9 shows that in
·The primary objective of this research was to study the transmission of gamma radiation from heavyweight concrete containing barite aggregates For this purpose cylindrical and cubic specimens were produced for 10 mix designs The mix designs containing different percentages of barite aggregates were calculated; five mix designs were also calculated for
·This paper presents findings of research conducted on the improvement of radiation shielding in concrete using barite as fine aggregate Barite is a heavy mineral having specific gravity in range Expand 14 Highly Influenced This study aims to prepare heavy cement grouts mixtures with different contents of barite powder Different
·This study aims to prepare heavy cement grouts mixtures with different contents of barite powder Different analytical techniques were used to characterize barite The Fourier transform infrared and Raman spectroscopy showed that barite has C3ν as a symmetry site The scanning electron microscopy coupled with X ray and X ray fluorescence showed that barite
·REVIEW PAPER ON USE OF BARITE POWDER IN CONCRETE Bhruguli Gandhi Lecturer Applied Mechanics Department Government Polytechnic Himatnagar Gujarat Technological University Ahmedabad Barite is a mineral composed of barium sulfate BaSO4 It receives its name from the Greek word "barys" which means "heavy"
·For this purpose various types of heavy aggregate reinforced concrete have been studied and used Among them are barite concrete Akkurt et al 2010; Daungwilailuk et al 2022 Magnetite
The concentration of barite BaSO 4 in heavy weight concrete needs to be tuned so as to determine the optimal shielding properties in a mixed gamma ray and neutron radiation environment The neutron attenuation properties for shielding materials are often measured in terms of the removal or macroscopic total cross section
Development of high performance heavy density concrete using different aggregates for gamma ray shielding Ahmed S Ouda Housing and Building National Research Center HBRC Dokki Giza Egypt sive strength of concrete containing barite aggregate was very close to M60 concrete and exceeds for 90 days The results also indicated that the
·High density aggregates such as magnetite ilmenite hematite and barite are used as aggregates in concrete [18 19 20 21 22 23] The results show that the gamma ray shielding performance of concrete mixed with heavy elemental aggregates is
