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Water/cement ratio theory states that for a given combination of materials and as long as workable consistency is obtained, the strength of concrete at a given age depends on the w/c ratio. The lower the w/c ratio, the higher the concrete strength. All materials used for a design including the water quality should be to a high standard. A general rule of thumb is, if the water is palatable then it is suitable for mixing concrete.

Get PriceEmail contactAs a quick answer, a concrete mix ratio of 1 part cement, 2 parts fine aggregate (sand) and 4 parts course aggregate will cover most general domestic jobs. Concrete mixed at this ratio is generally known as a C20 mix and it’s more than suitable for garden paths, concreting fence posts, shallow retaining wall foundations, some extension bases, shed bases and many other domestic and commercial applications.

Get PriceEmail contactConcrete 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 .

Get PriceEmail contact04/08/2015 The basic mix ratio for concrete is one part water, two parts cement and three parts sand. An alternative ratio is one part cement, two parts sand and three parts gravel with enough water added until the mixtures reaches the consistency of thick mud. Lime is also a common additive to the mix.

Get PriceEmail contactTo produce a 3000 psi cubic yard of concrete (27 cubic feet) the concrete mixture ratio is: 517 pounds of cement or (234kg) 1560 pounds of sand or (707kg) 1600 pounds of stone or (725kg) 32 - 34 gallons of water or (132L)

Get PriceEmail contactConcrete 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

Get PriceEmail contact31/03/2020 The basic mix ratio for concrete is one part water, two parts cement and three parts sand. An alternative ratio is one part cement, two parts sand and three parts gravel with enough water added until the mixtures reaches the consistency of thick mud. Lime is also a common additive to the mix.

Get PriceEmail contact20/01/2021 Ingredient ratios sometimes vary from taking advantage of this fact. A mixture of a very rigid concrete would use 1 part of cement, 3 parts of sand and 4 parts of gravel. A recipe for a more practical lot would be 1 part of cement, 2 parts of sand and 2 ¼ parts of gravel.

Get PriceEmail contactConcrete Ingredients Calculation. For Cement, Sand and Coarse Aggregate. This is a Volumetric Calculation. Assuming we need 2 m 3 of concrete for M20 Concrete Mix, (Mix Ratio, M20 = 1 : 1.5 : 3) Total Part of the Concrete = 1+1.5+3 = 5.5 Parts. Therefore, Cement Quantity = (Cement Part / Concrete Parts ) * Concrete Volume

Get PriceEmail contact06/02/2017 Mix ratio of concrete defines the ratio of cement sand and aggregate by volume in that order. So a mix ratio of 1:2:4 represents Cement: Sand: Aggregate – 1:2:4 (by Volume)

Get PriceEmail contactCalculator are provided for a general mix and a paving mix, the different ratio of materials are: General mix - 1:5 cement:all-in ballast or 1:2½:3½ cement:sharp sand:gravel. and Paving mix - 1:3½ cement:all-in ballast or 1:1½:2½ cement:sharp sand:gravel.

Get PriceEmail contactOn-Site Concrete calculator. Use this calculator to determine how much sand, aggregate (gravel) and cement is required for mixing on site a given area of concrete (1:2:4 ratio). Please enter the dimensions in the white fields below and click calculate to display the results. See below for help on concrete.

Get PriceEmail contact03/08/2018 Dry Volume of Concrete = 1 x 1.54 = 1.54 m3. Sand= (1.5/5.5) x 1.54 = 0.42 m3 ∴ 1.5 is a part of Sand, 5.5 is sum of ratio. Density of Sand is 1450/m3. For KG = 0.42 x 1450 = 609 kg. As we know that 1m3 = 35.31 CFT. For Calculation in Cubic Feet = 0.42 x 35.31 = 14.83 Cubic Feet.

Get PriceEmail contact4. For gravel aggregates decrease cement by 5 percent, increase sand by 2 percent and coarse aggregate in proportion to fine aggregate in mix. 4. No allowance has been made in the table for bulking of sand and wastage. Read More: Methods of Proportioning Concrete – Cement, Sand and Aggregates

Get PriceEmail contact03/09/2019 I've done rough levelling with 10mm compacted gravel then final leveling with 1 part cement to 4 parts sharp sand. Seems to have done the trick!.

Get PriceEmail contact20/01/2021 A mixture of a very rigid concrete would use 1 part of cement, 3 parts of sand and 4 parts of gravel. A recipe for a more practical lot would be 1 part of cement, 2 parts of sand and 2 ¼ parts of gravel. Sag test. To adjust your mixing ratio for best

Get PriceEmail contactLets calculate volume of sand and gravel needed to prepare M15 grade concrete. Mix Ratio of M15 grade concrete is 1:2:4. Hence for every 1 part of cement, we have to use 2 part of sand and 4 part of gravel to get M15 ratio concrete. The volume of 50 kg cement bag is 1.25 CFT. We can check this value by dividing the weight of the cement bag by ...

Get PriceEmail contactThe concrete mix ratio refers to the proportional relationship between the constituent materials in the concrete. First of all, we need to know what substances are contained in concrete. The four materials of water, cement, sand, and gravel are the most basic components of concrete. Secondly, we need to choose according to the purpose of the concrete. conventional grade-c20-c25-c30-concrete ...

Get PriceEmail contactConcrete Ingredients Calculation. For Cement, Sand and Coarse Aggregate. This is a Volumetric Calculation. Assuming we need 2 m 3 of concrete for M20 Concrete Mix, (Mix Ratio, M20 = 1 : 1.5 : 3) Total Part of the Concrete = 1+1.5+3 = 5.5 Parts. Therefore, Cement Quantity = (Cement Part / Concrete Parts ) * Concrete Volume

Get PriceEmail contactTHE QUANTITIES OF MATERIALS IN ONE CUBIC METER OF CONCRETE USING DIFFERENT MIX RATIOS. ... Cement Fine Sand Coarse Sand Gravel . Water Content at . 0.50 (litre) Weight of . concrete (kg) 1:3:6 2 ...

Get PriceEmail contact4. For gravel aggregates decrease cement by 5 percent, increase sand by 2 percent and coarse aggregate in proportion to fine aggregate in mix. 4. No allowance has been made in the table for bulking of sand and wastage. Read More: Methods of Proportioning Concrete – Cement, Sand and Aggregates

Get PriceEmail contact12/11/2014 Whats the ratio of gravel (premixed sand and stone) to cement for making a good strong concrete mix for a wall foundation? Is 4 gravel to 1 cement a good/stong concrete mix for 450mm deep x 450mm wide wall foundations? Or is it 5:1? There will also be 8mm steel mesh in the foundation too (50mm up off the base). Thanks. S. SBarrett Registered User. Messages 3,716. 30 Sep 2014 #2 I

Get PriceEmail contact14/09/2011 c. Class B - 2500 PSI. d. Class C - 2000 PSI. Mixture of half cubic meter sand, a cubic meter of gravel and a portion mixture of cement depending on the class that you are using and plus water, there will be a little bit more than one cubic meter of

Get PriceEmail contact03/09/2019 You really need some sharp sand in with the gravel to make concrete and 3:1cement is too strong . Nige F, 24 Jun 2018 #2. Keithmac. Joined: 10 Oct 2017 Messages: 1,815 Thanks Received: 292 Country: Cheers!. Keithmac, 24 Jun 2018 #3. Ian H. Joined: 14 Sep 2010 Messages: 6,925 Thanks Received: 833 Location: Rochdale Country: You could add 1/2ton of sharp sand. Ian H, 25 Jun 2018

Get PriceEmail contactHow many 25Kg bags of cement do I need for 1 cubic metre of all-in-ballast when mixing concrete at a ratio of 1:6. homeowner. 6 6 Answers from MyBuilder Groundworkers . Best Answer. Local patios and driveways. Crawley • Member since 24 Jan 2012 • 2 jobs, 100% positive feedback. 14874. Errmm.. At 6:1 ratio you will need approx two bulk bags which is 1700kg or 1.2cumtrs. Which adds up to 11 ...

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