effect of sand fines and water cement ratio on concrete

Effect of Sand Fines and Water/Cement Ratio on Concrete ...

conducted to determine the effect of fines content in sand and water/cement ratio on some properties of concrete. Fines content in sand of 2%, 4%, 6%, 8%, 10% and 12% as well as water/cement ratio of 0.55, 0.6 and 0.7 were used. The concrete were prepared using the basic mix 1:2:4.

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How Does the Ratio of Sand to Cement Affect the Strength ...

Nov 29, 2006  Read the directions on the bag of cement to determine how much water to use for each mixture. 80% sand, 20% cement. For each concrete batch, mix sand, cement, and water thoroughly, then pour into forms to make 3 bricks. Label each form with sand/cement ratio of concrete used. Allow the bricks to set overnight.

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How Cement, Sand and Aggregate ratios influence Concrete ...

Total Aggregate by cement ratio (A/C) decreases with increase in grade of concrete. For example, M20 grade of aggregate will have a higher A/C ratio than of M30. Higher the Aggregate/Cement ratio leaner the concrete mix, as cement content is lower. Concrete mix can be made more workable by fine tuning Aggregate/Cement ratio.

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The Effect of Cement and Water Cement Ratio on Concrete ...

Construction and Build Environment 89 The Effect of Cement and Water Cement Ratio on Concrete Paving Block Tung-Chai Ling 1, Hasanan Md Nor 1 *, Rachmat Mudiyono 1 1 Department of Geotechnics and Transportation Universiti Teknologi Malaysia, 81310 UTM Skudai, Johor, Malaysia Tel: +60-7-5531580, Fax: +60-7-5566157, E-mail: [email protected] Abstract This paper presents

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Effect of Water Cement Ratio on Strength of Concrete – we ...

Oct 06, 2017  EFFECT OF WATER CEMENT RATIO ON CONCRETE. A lower ratio leads to higher strength and durability, but may make the mix difficult to work with and form. Work-ability can be resolved with the use of plasticizers or super-plasticizers. However, a mix with a ratio of 0.35 may not mix thoroughly, and may not flow well enough to be placed.

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The effect of using low fines content sand on the fresh ...

Dec 01, 2019  Also, ‘SS’, ‘LFS’ and ‘LMS’ stand for “standard sand”, “low fines content sand” and “limestone modified sand”, respectively. Water to cement ratio for all mixes except mixes containing LSP is fixed to 0.40. LSP is very fine and significantly increases surface area of aggregate when it is used in concrete mixture.

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Effect of Fineness of Sand on the Cost and Properties of ...

To find out the effect of fineness modulus (FM) of sand on concrete, sand of different FM from 2.0 to 3.0 is chosen. Two sizes of coarse aggregate particles: i.e. 20 10 mm, which are generally used in standard concrete mix, were chosen for the investigations. Concrete Mix Selected: Concrete Grade : M30 Water-Cement Ratio

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How Cement, Sand and Aggregate ratios influence Concrete ...

Total Aggregate by cement ratio (A/C) decreases with increase in grade of concrete. For example, M20 grade of aggregate will have a higher A/C ratio than of M30. Higher the Aggregate/Cement ratio leaner the concrete mix, as cement content is lower. Concrete mix can be made more workable by fine tuning Aggregate/Cement ratio.

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The Effect of Cement and Water Cement Ratio on Concrete ...

Construction and Build Environment 89 The Effect of Cement and Water Cement Ratio on Concrete Paving Block Tung-Chai Ling 1, Hasanan Md Nor 1 *, Rachmat Mudiyono 1 1 Department of Geotechnics and Transportation Universiti Teknologi Malaysia, 81310 UTM Skudai, Johor, Malaysia Tel: +60-7-5531580, Fax: +60-7-5566157, E-mail: [email protected] Abstract This paper presents

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The effect of using low fines content sand on the fresh ...

Dec 01, 2019  Also, ‘SS’, ‘LFS’ and ‘LMS’ stand for “standard sand”, “low fines content sand” and “limestone modified sand”, respectively. Water to cement ratio for all mixes except mixes containing LSP is fixed to 0.40. LSP is very fine and significantly increases surface area of aggregate when it is used in concrete mixture.

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Effects of Water-Cement Ratios on the Compressive Strength ...

relative proportion of cement and of the fine and coarse aggregates but the water-cement ratio is another important factor. There is an optimum amount of water that will produce a concrete of maximum strength from a particular mix of fine and coarse aggregate and cement (Lafe, 1986).

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Effect of Water to Cement Ratio on Concrete

Water content = (water/cement ratio) x cement weight. 3. Water was measured into a bucket using measuring cylinders. 4. The water/cement ratio was set as the variable between 3 Concrete Mixes (to determine the effect of water/cement ratio on the strength and workability of the concrete). Water content quantities used are shown on table 1.

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Effect of water cement ratio and Aggregate Size on ...

Effect of water cement ratio. The W/c ratio is an index of the strength of concrete. The strength of cement paste increases with an increase in cement concrete and decreases with water content and air content. For the fully compacted concrete at a given age and thermal temperature, its strength is inversely proportional to the w/c ratio.

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Importance of Water-Cement Ratio in Concrete

Nov 14, 2018  Water-Cement Ratio is defined as the ratio of the weight of water to the weight of cement. Water/cement ratio as per IS 10262 (2009) for the concrete mix varies from 0.4 to 0.6. 0.7 w/c ratio is also used for pumped concrete. 0.5 w/c ratio indicates, that for every 100 kg of cement, 50 lit. of water

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Can I Make Concrete with Just Sand and Cement? (What To Do)

Aug 13, 2020  The reason concrete cannot be made simply by mixing sand with cement is that it is a composite material that needs a coarse aggregate to achieve this strength. In essence, concrete is a mixture of Portland cement, water, sand, and rocks. The cement or paste coats and binds the sand and rocks. Then, a chemical reaction called hydration, which is ...

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What is an effective water-cement ratio in concrete? - Quora

The water–cement ratio is the ratio of the weight of water to the weight of cement used in a concrete mix. A lower ratio leads to higher strength and durability, but may make the mix difficult to work with and form. Workability can be resolved wit...

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Effect of use of Silica Sand as Fine Material in Concrete

[3] L. Evangelista, J. de Brito, “Mechanical properties of concrete made with fine recycled concrete aggregates”. Cement and concrete composites, 2007, Pg. No. 397 to 401 [4] Rafat Siddique, Geert de Schutter, Albert Noumowe, “Effect of used foundry sand on the mechanical properties of concrete”, Construction and building

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Factors Affecting Strength of Concrete - The Constructor

Water / Cement Ratio The relation between water cement ratio and strength of concrete is shown in the plot as shown below: The higher the water/cement ratio, the greater the initial spacing between the cement grains and the greater the volume of residual voids not filled by hydration products. There is one thing missing on the graph.

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Bleeding of Concrete - Causes, effects, Control Measures ...

Sep 17, 2020  Reducing water cement ratio and slump of concrete, increasing cement content, use of fine cement. Increasing the percentage of fine aggregates in mix, using finer sand (FM 2.5 or less). Proper proportioning of concrete mix to achieve homogeneity and cohesiveness. Entrainment of air into the mix to increase workability and decrease in water demand.

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THE EFFECT OF ROCK WOOL AND CURING ON SOME

get the normal consistency according to ASTM C230 [11]. The water cement ratio is shown in Table (5). Second stage is mixing mortar cement mixtures of ferrocement. The ratio 1:2 was chosen to meet good economical and physical properties. Mortar specimens were prepared from mixing OPC, well-graded dry sand, rock wool and water.

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Effects of Water-Cement Ratios on the Compressive Strength ...

relative proportion of cement and of the fine and coarse aggregates but the water-cement ratio is another important factor. There is an optimum amount of water that will produce a concrete of maximum strength from a particular mix of fine and coarse aggregate and cement (Lafe, 1986).

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Effect of Water to Cement Ratio on Concrete

Water content = (water/cement ratio) x cement weight. 3. Water was measured into a bucket using measuring cylinders. 4. The water/cement ratio was set as the variable between 3 Concrete Mixes (to determine the effect of water/cement ratio on the strength and workability of the concrete). Water content quantities used are shown on table 1.

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Effect of use of Silica Sand as Fine Material in Concrete

[3] L. Evangelista, J. de Brito, “Mechanical properties of concrete made with fine recycled concrete aggregates”. Cement and concrete composites, 2007, Pg. No. 397 to 401 [4] Rafat Siddique, Geert de Schutter, Albert Noumowe, “Effect of used foundry sand on the mechanical properties of concrete”, Construction and building

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Concrete Mix Ratios - Cement, Sand, Aggregate and Water

Concrete mix ratio of 1:3:3 – On mixing 1 part cement, 3 parts sand with 3 parts aggregate produces concrete with a compressive strength of 3000 psi. On mixing water with the three ingredients, a paste is formed that binds them together till the concrete mix gets hardened. The strength concrete is inversely proportional to the water/cement ...

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Effect of Water-Cement Ratio on the Compressive Strength ...

observed that a water-cement ratio of less than 0.6 shall give better corrosion resistance with increased compressive strength. In their study of the effect of different mix ratios and water cement ratios on sulphate attack on concrete, Ahmad and Shabir (2005) conclude that lean mixes were more affected than the richer ones; that concretes with the

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Factors Affecting Strength of Concrete - The Constructor

Water / Cement Ratio The relation between water cement ratio and strength of concrete is shown in the plot as shown below: The higher the water/cement ratio, the greater the initial spacing between the cement grains and the greater the volume of residual voids not filled by hydration products. There is one thing missing on the graph.

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Effect of W/C Ratio on Durability and Porosity in Cement ...

Apr 15, 2014  Water is often added to concrete placing for easy workability and finishability in construction site. The additional mixing water can help easy mixing and workability but causes increased porosity, which yields degradation of durability and structural performances. In this paper, cement mortar samples with 0.45 of W/C (water to cement) ratio are prepared for control case and durability ...

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Can I Make Concrete with Just Sand and Cement? (What To Do)

Aug 13, 2020  The reason concrete cannot be made simply by mixing sand with cement is that it is a composite material that needs a coarse aggregate to achieve this strength. In essence, concrete is a mixture of Portland cement, water, sand, and rocks. The cement or paste coats and binds the sand and rocks. Then, a chemical reaction called hydration, which is ...

get price

What is an effective water-cement ratio in concrete? - Quora

The water–cement ratio is the ratio of the weight of water to the weight of cement used in a concrete mix. A lower ratio leads to higher strength and durability, but may make the mix difficult to work with and form. Workability can be resolved wit...

get price

Concrete Mix Ratios (Cement, Sand, Gravel)

Jan 26, 2021  Mortar Types and Uses. Typically used as the compound for joining masonry, stone or ceramic units together, mortar is made by combining cement, lime and sand. Mortar typically has a higher water to cement ratio when compared with concrete which allows greater workability and is required to form mortars bonding properties.

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Bleeding of Concrete - Causes, effects, Control Measures ...

Sep 17, 2020  Reducing water cement ratio and slump of concrete, increasing cement content, use of fine cement. Increasing the percentage of fine aggregates in mix, using finer sand (FM 2.5 or less). Proper proportioning of concrete mix to achieve homogeneity and cohesiveness. Entrainment of air into the mix to increase workability and decrease in water demand.

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Effects of Aggregate, Water/Cement Ratio, and Curing on ...

the type and amount of cement and concrete age (J-3). How­ ever, the effect of the moisture content on the coefficient of linear thermal expansion applies only to the paste component as reported by one researcher ( 4,5). The variation of the coefficient of linear thermal expansion of cement paste is much greater than that of concrete (6).

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Effect of fine particles on strength and stiffness of ...

Nov 15, 2019  This reduction in water due to the presence of clay could have caused smaller rate of stiffness gain for samples with higher fines content. Effect of cement type and fine content on UCS. The UCS of the cement-treated sand is plotted against fine content for three cement contents in Fig. 7. The cement-treated samples generally show increase in ...

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Effect of Molasses and Water–Cement Ratio on Properties of ...

Sep 17, 2019  RAC is produced by using recycled coarse aggregate (RCA) derived from demolished concrete. In RAC, cement–sand–RCA ratio is 1:1.5:3 by weight. 0%, 0.25%, 0.5% and 1% molasses by weight of cement is used in RAC with three different water–cement ratios, i.e. 0.45, 0.50 and 0.55. RCA is used in the air-dried state.

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