The attenuation coefficient of barite concrete subjected …
paper presents the use of barite as concrete aggregates to block gamma-ray radiation. Two concrete grades fc'25 and fc'35 were prepared. The effect of barite to the attenuation coefficient of samples ... Water cement ratio of the specimen was 0.61 for fc'25 MPa and 0.47 for fc'35 MPa. While the gradation of the fine and coarse
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Simulation and optimization of gamma-ray linear …
Barite aggregate fraction, water-to-cement ratio and cement content of the shields were limited as 0:100 (by weight), 0.30:0.70 (by weight) and 200:600 (kg/m 3) in the optimization problem, respectively. The regression equation derived from the regression learning process presented an excellent correlation to define the XCOM linear attenuation ...
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The effect of barite rate on some physical and
The effect of barite (BaSO 4) aggregate rate on the physical and mechanical properties such as the ultrasound pulse velocity (UV), Schmidt hardness (SH) and unit weight (UW) of heavyweight concrete have been measured and variation of these properties with the barite rate in concrete have also been investigated. For this purposes five different types of …
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Experimental Study on a Barite Heavyweight Self …
Thus, the use of superplasticizers helps to obtain workable concrete with low water-cement ratio (w/c) and high density. This paper discusses properties for heavy-weight self …
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Concrete Mixing Ratio Calculator
Estimate Water Requirement Assume a water-cement ratio of 0.5: Water Volume = 0.5 × Cement Volume = 0.5 × 0.143 = 0.072 m³. See also Sonotube Load Calculator Online For 1 cubic meter of concrete, you would need approximately 0.143 m³ of cement, 0.286 m³ of sand, 0.571 m³ of aggregate, and 0.072 m³ of water.
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Engineering Properties of Heavyweight Concrete—A Review
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 specimens with Ø 15 × 30 cm …
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Effects of aggregate preheating and polymer fibers on the …
According to Luo's [28] research on barite concrete, the cement content should be at least 350 kg/m 3 to ensure good mechanical and radiation shielding properties. ... The water to cement ratios of all concrete mixtures were kept as 0.36 to avoid the undesired workability of the fresh mixture. The detailed mix proportions are listed in Table 4.
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Formulation of mixture proportions and experimental study …
The present study aims to determine the mix proportion of binder, heavyweight aggregates, water-to-binder ratio, and additives to develop self-compacting concrete with a bulk density higher than 2600 kg m−3. It also aims to evaluate the engineering properties, pore structure, and microstructure of established heavyweight self-compacting concrete. Barite …
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The effect of barite rate on some physical and
For this purposes five different types of concrete where barite aggregate used in the rate of 0%, 50%, 60%, 70%, , have been produced. This would lead to obtain ideal …
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How to Calculate Water Cement Ratio
Use a maximum .45 water to cement ratio for concrete with severe or very severe sulfate conditions per the 1997 Uniform Building Code (Table 19-A-4) Water permeability increases exponentially when concrete has a water cement ratio greater than .50. Durability increases the less permeable the concrete mix is. Strength improves with lower water ...
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What is the Right Water Cement Ratio | UltraTech
Water-cement ratio formula. Water-cement ratio = Weight of water / Weight of cement For example: If the ratio is 0.50 and you're using 50 kg of cement, the water required would be: Water = 0.50×50 = 25 liters. Similarly, if the ratio is …
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Behaviour of Barite Concrete in alkaline environment
Barite concrete showed a high split tensile and flexural strength,4.9 Mpa and 6.0Mpa respectively on normal exposure conditions. The Compressive strength of Barite concrete reduced by a …
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Engineering Properties of Heavyweight Concrete—A Review …
Reference [3] developed bulk concrete mixtures with v arying water/cement ratio's ranging 0.3–0.6 to find out the ultimate appreciable water/cement ratio of bulky Flexural Strength (MPa )
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Properties of heavyweight concrete produced with barite
A study concluded that the optimum water-cement ratio for barite concrete is 0.40 (Topçu, 2003). At the same time, the quality and type of cement also matter in the fabrication of heavyweight ...
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Experimental study on a barite heavyweight self-consolidating concrete
This experimental study investigates the influence of the water cement ratio on the permeability and capillarity of mortar. 0.35, 0.50, 0.65 and 0.80 w/c ratios were examined.
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60co y-ray attenuation coefficient of barite concrete
water to cement ratios (0.4, 0.45, 0.5, 0.6 and 0.7) were used for constructing the barite concrete specimens. For each specific barite concrete specimens the appropriate mixture of cement, barite aggregate and water were placed in a bunker to yield a proper homogenate to be used in construction of concrete samples. Homogenates were well
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Experimental Study on a Barite Heavyweight Self-Consolidating Concrete
Keywords: barite; heavyweight concrete; self-consolidating concrete (SCC); stability; superplasticizer. DOI: 10.14359/51663204. ... Thus, the use of superplasticizers helps to obtain workable concrete with low water-cement ratio (w/c) and high density. This paper discusses properties for heavy-weight self-consolidating concrete (SCC) made with ...
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What is the Water-Cement Ratio? – Concredata
Lower W/C ratio (0.35 – 0.45): Concrete with a low water-cement ratio produces a denser structure, minimizing the voids between the cement particles. This results in a stronger material. For example, in high-strength …
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Properties of Heavyweight Concrete for Structural and …
In all concrete mixes produced, water/cement ratio, cement content, and the maximum aggregate size of the aggregates used were kept constant. In terms of the main mechanical properties, the best performances were obtained when iron ore was used, while the highest fracture energy values were reached in concretes with steel mill scale, magnetite ...
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What is the Right Water-Cement Ratio for Mix Design?
Different Water-cement Ratios Different Water-cement ratios are employed for different concrete applications. For high-quality concrete construction, a lower water-cement ratio of 0.4 is employed. For concrete construction like driveways and sidewalks, a w/c ratio ranging from 0.6 to 0.7 is normally used.
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Elastic moduli of control and barite concrete.
[8] [9][10][11] The use of nanoparticles (NPs) in concrete composition increases the surface-to-volume ratio, diminishes fine concrete pores and improves the compressive strength and physical ...
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Enhancing Shielding Efficiency of Ordinary and Barite Concrete …
Portland cement type one and water were used in the concrete mix. The cement-to-water ratios for the different grades were 0.78, 0.58, 0.49, and 0.42, respectively. Concrete specimens were cut into sizes of 150 mm x 150 mm x 150 mm, with three samples per grade, and 150 mm x 150 mm x 750 mm for each ordinary concrete grade. ... Barite concrete ...
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REVIEW PAPER ON USE OF BARITE POWDER IN …
Water-cement ratio is to be kept same as that of normal concrete. The properties of HDC Concrete are low thermal expansion, creep deformation and high modulus of elasticity. HDC …
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Barite powder as sand substitution in concrete: Effect on …
For most of previous researches on introducing barite into concrete, substitution has concerned both sand and gravel, which are the major components of ordinary concrete; the aim was the incorporation of maximum quantity of barite. ... Cement Sand Barite Coarse aggregates Water; M0: 410: ... As the mass barite ratio increases, the gap between ...
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Properties of heavyweight concrete produced with barite
These are formulated as μ=0.055e 1.36c cm −1 (c is barite percent in aggregate) according to the ratio of barite aggregate used in the aggregate and also the concrete unit weight μ=0.006e 1.04Δ cm −1 (Δ is concrete unit weight, kg/dm 3) [6]. Moreover, the thermal expansion coefficient of this concrete is double that previously mentioned ...
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Cement Ratio
The conclusion was that the most optimum w/c ratio for fabrication of barite heavy weight concrete is 0.40. Manu S. Nadesan, P. Dinakar, in Construction and Building Materials, 2017. Water …
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Recent Trends in Advanced Radiation Shielding Concrete for …
A combination of coarse and fine barite aggregate with a high water-to-cement ratio resulted in 3950 kg/m 3 for RSC's density . ... A high water-to-cement ratio in concrete resulted in a high amount of free water in the capillary and porosity of concrete. The freezing of concrete caused water in the pores to freeze and expand.
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How to Calculate Water Cement Ratio
HOW TO CALCULATE WATER CEMENT RATIO. The water to cement ratio is calculated by dividing the water in one cubic yard of the mix ( in pounds) by the cement in the …
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The unit weight for three different types of w/c …
The water-to-cement (W/C) or water-to-binder (W/B) ratio affects the characteristics of heavyweight concrete such as compressive strength, permeability and spreading. ...
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What is Water Cement Ratio?
What is Water Cement Ratio? Water Cement Ratio means the ratio between the weight of water to the weight of cement used in concrete mix. Normally water cement ratio falls under 0.4 to 0.6 as per IS Code 10262 (2009) for nominal mix (M10, M15 …. M25) We all know that water cement ratio will directly affect the strength of concrete.
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