Behaviour of Barite Concrete in alkaline environment

different water cement ratios. Desirable values were obtained at replacement and water cement ratio of 0.43 with regard to UPV, rebound hammer ... for conventional concrete and 1:1.2:3.15 for Barite concrete at a w/c ratio of 0.30 and superplasticizer dosage of 0.46% is considered. Cement replacement with flyash at 10% is done ...

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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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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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BARYTES CONCRETE FOR RADIATION SHIELDING: MIX …

Concrete mix design criteria, based on existing theories of proportioning and specifically oriented toward the solution of radiation shielding problems, were developed. Effects of aggregate gradation, cement-to- aggregate ratio, and water content were examined. A barytes concrete, designed according to these criteria, was thoroughly investigated in the Lid Tank Shielding …

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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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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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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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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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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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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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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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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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(PDF) Effect of Heavy Weight Magnetite Aggregate on Mechanical …

Finally, an optimum water-to-cement ratio of 0.45 for barite mineral infused concrete is recommended for the least reduction in mechanical properties and with significantly improved level of ...

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Improvement of concrete shielding to nuclear radiations using barite

Barite mineral was obtained from Barite quarries situated in Jamrud, Federally Administered Tribal Areas (FATA), Pakistan. Influence of Barite on mechanical and radiation shielding properties of concrete was studied on concrete cylinders cast …

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What is Water Cement Ratio? – Guide With Free …

This ratio of the amount of water to the amount of cement by weight is termed as the water-cement ratio and the strength and quality of concrete primarily depend upon this ratio. The quantity of water is usually expressed in litres per bag of …

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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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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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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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Water-Cement Ratio and Concrete Strength: …

The water-cement ratio is the ratio of the weight or volume of water to the weight of cement in a concrete mixture. It is a critical factor in determining the strength, durability, and workability of the resulting concrete. The typical w/c ratio for …

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International Concrete Abstracts Portal

Heavyweight concrete made of water, cement, and heavyweight aggregate is used for shielding in structures where radiation protection is required. Water reduction helps to achieve high density mixtures, since water is the component with the lowest specific gravity.Thus, the use of superplasticizers helps to obtain workable concrete with low water-cement ratio (w/c) and …

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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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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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Densification of Concrete using Barite as Fine Aggregate and its Effect on Concrete Mechanical and Radiation Shielding …

It was detected that Abrams' water-cement ratio law can predict compressive strength of heavyweight magnetite concrete with an acceptable accuracy (R 2 = 0.98).

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Water to Cement Ratio Calculator – Calculate Ideal Water Cement Ratio

Water to Cement Ratio Formula. The water-cement ratio (w/c) is expressed as a decimal and is calculated using the following formula:. w/c = Weight of Water / Weight of Cement. If you have 350 kg of cement and 175 kg of water in your mix:. w/c = 175 kg / 350 kg = 0.5. This 0.5 ratio would typically result in moderate-strength concrete suitable for many general construction applications.

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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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International Concrete Abstracts Portal

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 polycarboxilic …

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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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The attenuation coefficient of barite concrete subjected to …

This paper presents the use of barite as concrete aggregates to. Barite is a non-metallic mineral, which composed of Barium Sulfate (BaSO4), has specific gravity about 4.5. It can be used for high density concrete as a shielding against gamma-ray. ... Water cement ratio of the specimen was 0.61 for fc'25 MPa and 0.47 for fc'35 MPa. While ...

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