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Barite powder as sand substitution in concrete: Effect on

2015年10月1日  In the current case, and as highlighted in the introduction, barite used as a powder has similar size than cement particles. Hence, barite should form with hydrated

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Preparation of Heavyweight Ultra-high Performance Concrete Using Barite ...

2022年1月20日  The heavyweight ultra-high performance concrete (HUHPC) was prepared with barite sand partially replaced by titanium-rich heavy slag sand (THS) at replacement

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Barite powder as sand substitution in concrete: Effect on

2015年10月1日  Barite (BaSO 4) is a mineral commonly used as aggregates to produce heavyweight concrete. The applications concern radiations shielding in hospitals and

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(PDF) Barite powder as sand substitution in concrete

2015年10月1日  The new designed mixture containing barite in powder form can be used for structural concrete. Chemical and mineralogical properties of cement and aggregates.

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Experimental study on similar materials for tunnel lining concrete

2023年10月1日  After a series of mix proportion tests, it was determined that the optimal mix proportion of the similar material of grade-C25 concrete is gypsum: white cement:

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Optimization of reactive powder concrete by means of barite

2018年11月20日  Optimization of the reactive powder mixtures was performed for both neutron and gamma-ray attenuation at 8 MeV. As a result, barite significantly increased

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Barite powder as sand substitution in concrete: Effect on

2015年10月1日  Barite powder as sand substitution in concrete: Effect on some mechanical properties Semantic Scholar DOI: 10.1016/J.CONBUILDMAT.2015.07.140 Corpus ID:

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Barite powder (0/100 lm). Download Scientific

Context 1 ... barite is a mineral powder rust colored with a vitreous luster (Fig. 4), obtained by crushing and grinding of the rock of barite ore (Fig. 5). The barite powder form is...

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[PDF] REVIEW PAPER ON USE OF BARITE POWDER IN CONCRETE

Barite of a size 0 – 100 microns basically is used in concrete. Barite is clean, smooth, unresponsive and inexpensive naturally available mineral. It is non-toxic also

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Optimization of reactive powder concrete by means of barite

In the study, performance of reactive powder concrete was researched with regard to gamma-ray and neutron attenuation when its normal weight aggregate replaced with

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Experimental, analytical, and simulation studies of modified concrete ...

2023年10月17日  The current study assessed two concrete mixes prepared using dolomite and barite/limonite aggregates to shield against both energetic photons and neutrons. After that, a designed mix which ...

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Use of barite concrete for radiation shielding against gamma

2022年4月4日  Ferro boron has been used as an aggregate for high-density concrete to reduce gamma and neutron radiation [21]. Adding 25% and 50% ferro boron to concrete increased the material strength. The attenuation coefficient of gamma-rays and neutrons also increased with the percentage of ferro boron in concrete. However, this shielding is

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Simulation and optimization of gamma-ray linear

2020年8月30日  The remarkable increment in radioactivity risks of today’s industrial world is required to the efficient design of shielding structures. In the present study, the optimal design parameters of barite concrete shields for providing the highest gamma radiation shielding capability were researched by using a hybrid technique of the Box-Behnken

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Preparation of Heavyweight Ultra-high Performance Concrete Using Barite ...

2022年1月20日  The heavyweight ultra-high performance concrete (HUHPC) was prepared with barite sand partially replaced by titanium-rich heavy slag sand (THS) at replacement proportion of 0%, 30%, 50%, 70% and 100% in this work. The results show that THS incorporation can effectively improve the mechanical properties and reduce the volume

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Optimization of reactive powder concrete by means of barite

2018年11月20日  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). ... UHPC with 30% lead powder was the most efficacious mix design

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Recent Trends in Advanced Radiation Shielding Concrete for

2022年7月12日  Dry cement powder reacts with water to form the binder, and the mix ratio between the cement and water defines the water-to-cement ratio, which influences the concrete strength. The amount of cement used in research ranges from 269–1423 kg per cubic meter (kg/m 3 ) of concrete produced [ 63 , 64 ].

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Delft University of Technology Optimization of reactive

A mix that contains 40% barite aggregate of total aggregate volume 29 was found as an optimum RPC mixture for simultaneously shielding neutrons and gamma 30 rays. Keywords:31 Reactive powder concrete, barite proportion, mechanical properties, 32 optimization, simultaneously shielding neutrons and gamma rays 33 34 1. Introduction

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Mix design effective parameters on γ-ray attenuation

2012年3月1日  DOI: 10.1016/J.CONBUILDMAT.2011.08.043 Corpus ID: 137009747; Mix design effective parameters on γ-ray attenuation coefficient and strength of normal and heavyweight concrete @article{Mostofinejad2012MixDE, title={Mix design effective parameters on $\gamma$-ray attenuation coefficient and strength of normal and

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Use of barite concrete for radiation shielding against gamma

2022年4月4日  An increase in the percentage of crushed barite (Mix Nos. 1–4) significantly increases the linear attenuation coefficient of concrete at all energy levels energy. ... Optimization of reactive powder concrete by means of barite aggregate for both neutron and gamma rays. Constr. Build. Mater., 189 (2018), pp. 470-477. View PDF View article View ...

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The Effect of Barite Content on Anti Radiation

2023年10月13日  International Journal of Science and Research (IJSR) ISSN (Online): 2319-7064 Impact Factor (2012): 3.358 Volume 3 Issue 10, October 2014 ijsr

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(PDF) Improving the resistance of ultra-high

2023年1月1日  Improving the resistance of ultra-high-performance concrete against nuclear radiation: Replacing cement with barite, hematite, and lead powder January 2023 Developments in the Built Environment 15 ...

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Barite powder as sand substitution in concrete: Effect on

2015年10月1日  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). ... UHPC with 30% lead powder was the most efficacious mix design

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Optimization of reactive powder concrete by means of barite

2018年11月20日  In the study, performance of reactive powder concrete was researched with regard to gamma-ray and neutron attenuation when its normal weight aggregate replaced with heavyweight aggregate (barite). For this purpose, reactive powder concrete mixtures were prepared 100% quartz aggregate, 100% barite aggregate and their

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(PDF) Rheological and Mechanical Properties of Heavy Density Concrete ...

2020年1月16日  Barite concrete has shown a lower heat of hydration generation in comparison with a standard mix, which is correlated with compressive strength results. Chemical and physical properties of cement ...

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Effect of incorporating hematite on the properties of ultra

2022年4月11日  The main materials used in this study were Grade I fly ash (Rongchangsheng Environmental Protection Material Factory), micro-silica fume (Lvmingyuan Environmental Protection Material Factory), Portland cement with a grade of P∙O52.5 (Boai BBMG Cement Co., Ltd.), high-efficiency polycarboxylate superplasticizer

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REVIEW PAPER ON USE OF BARITE POWDER IN CONCRETE

2018年6月25日  Barite has the ability to block gamma-ray emissions used to make high-density concrete to block x-ray emissions in hospitals, power plants laboratories. In contrast with conventional concrete weighing around 150 P.Meenakshi, (2017) in this paper “Partial Replacement of Cement by Barites and Lime Powder in Concrete” author

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Engineering Properties of Heavyweight Concrete—A Review

2020年10月14日  Reference [] developed bulk concrete mixtures with varying water/cement ratio’s ranging 0.3–0.6 to find out the ultimate appreciable water/cement ratio of bulky concrete yielded with barite.Also, there was a utilization of two different types of cement that is PKC 32.5 and PC 42.5 in the experimental analysis. Three cylindrical standard

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Effect of Perlite Particles on Barite Cement Properties - PMC

2021年2月2日  The study showed that the addition of perlite powder improved the compressive strength of set cement. The 24 h sonic strength of the barite-based slurry increased from 48.05 MPa for 0% perlite powder to 59.38 MPa for 3% perlite powder, representing a 23.58% increase in strength. Figure 4. Uniaxial compressive strength.

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Barite powder (0/100 lm). Download Scientific Diagram

Download scientific diagram Barite powder (0/100 lm). from publication: Barite powder as sand substitution in concrete: Effect on some mechanical properties Barite (BaSO4) is a mineral ...

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Rate of Heavyweight Concrete Containing Barite

2022年3月27日  The mix design of heavyweight concrete is very similar to ordinary concrete. The mix design of heavyweight concrete is presented in ACI 304 [4]. Lead or heavy aggregates are usually used to make heavy concrete. Due to the adverse effects of lead on human health, protective shields can be created using barite,

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