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How 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 ...

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. Comment: If you are wondering how 1:2½:3½ equals 1:5 ("shouldn't it be 1:6" I hear someone say), the answer is that there is a lot of space between the individual pieces of gravel ...

For estimating purposes, you can make about 1 cubic yard of concrete with 5 1/2 94-pound bags of cement, 17 cubic feet of sand, and 18 cubic feet of gravel. (It takes about forty 80-pound bags of prepackaged materials (like Quikrete) to make 1 cubic yard of concrete.)

Use our handy concrete calculator below to compute the volume you will need for a range of structures, including square slabs, footings, round slabs, columns, stairs and fence post holes. Simply input the appropriate figures of your intended construction, along with the suitable units, and then click 'calculate' to view the final volume figure.

To calculate the amount of ballast you will need find the weight of concrete required. To do this multiply the cubic meters by 1.5 which will give you the weight of the concrete required in metric tonnes. With a standard 3 in 1 sub ground concrete mix, (3 parts ballast to 1 part cement), each 850kg bag of ballast will account for 1150 kg of ...

These Concrete Calculators provide the required quantities of cement and all-in ballast or cement, sharp sand and gravel required to give a defined volume of finished concrete. Both of these concrete calculators make an allowance for the fact that material losses volume after being mixed to make concrete. Calculator are provided for a general ...

Example calculation Estimate the quantity of cement, sand and stone aggregate required for 1 cubic meter of 1:2:4 concrete mix. Ans. Materials required are 7 nos. of 50 kg bag of cement, 0.42 m 3 of sand and 0.83 m 3 of stone aggregate.

The quantities of materials for 1 m3 of concrete production can be calculated as follows: The weight of cement required = 7.29 x 50 = 364.5 kg. Weight of fine aggregate (sand) = 1.5 x 364.5 = 546.75 kg. Weight of coarse aggregate = 3 x 364.5 = 1093.5 kg. Concrete Calculator: Calculate Quantities of Materials for Concrete

Using this quantity calculator you can find out just how much material you need. Use the top form for Metric and the lower form if you prefer feet & inches. Carefully enter values for the length, width & depth in all the red fields. Choose a density of 1.76 for concreting ballast, 1.50 for pea shingle and use 2.00 for scalpings.

There are dozens of handy little calculators dotted throughout the site, from working out how much sand and cement is required to how many flags are needed to cover a given area. ... Estimate volumes of aggregates and cement needed to mix a C7.5 equivalent concrete as used for bedding kerbs and edgings. Appears on: Laying Edgins ; C20 Concrete ...

Both concrete calculators make an allowance for the fact that ballast etc losses volume when mixed to make concrete. Two Concrete Calculator are provided for different concrete mixes: General mix - 1:5 cement:all-in ballast or 1:2½:3½ cement:sharp sand:gravel.

May 19, 2018· mix(5)=1:5:10 cement=1/16x1x1.54x1440=138.6k.g=2.772 bags( say 3 bags) sand=1/16x5x1.54x1500=721.875 k.g=17 cft coarse aggregate=1/16x10x1.54x1500=1443.75=34 cft

Density of concrete = 2400 kg/cum. So, 1 bag of cement produces = 400/2400 = 0.167 cum. No. of bags required for 01 cum of concrete = 1/0.167 = 5.98 bags ~ 6 bags. From above, if the concrete mix is 1:2:4, to get a cubic meter of concrete we require. 1.Cement = 6 bags = 300 kgs. 2.Fine Aggregate = 115/0.167 = 689 kg

The proportions of materials for a C20 and C20P (P = Portland cement) concrete mix are: 1 part cement; 2 parts fine aggregate (sand) 4 parts coarse aggregate; If you are using premixed ballast, then: 6 parts pre mixed ballast; 1 part cement; In an ideal world, where everything is delivered dry, a water to cement ratio of approximately 0.55 ...

Construction Aggregate Calculator. Enter the width, length, thickness, and product density and hit the "Calculate" button to calculate your estimate. If you do not know the product density, use the optional density estimator* or contact a local sales representative.

Handy Calculators; Concrete Mix Ratios (Cement, Sand, Gravel) More Properties. Preparing the right mix. Depending on the application concrete mix design can be complex. The below table gives a basic indication of the mix ratios used for different purposes but should be used as a guide only. Some additional things to consider when finding a ...

Both concrete calculators make an allowance for the fact that ballast etc losses volume when mixed to make concrete. Two Calculator are provided for different concrete mixes: General mix - 1:5 cement:all-in ballast or 1:2½:3½ cement:sharp sand:gravel.

Calculate Volume of Square Slab Calculator Use. Calculate volumes for concrete slabs, walls, footers, columns, steps, curbs and gutters. Enter dimensions in US units (inches or feet) or metric units (centimeters or meters) of your concrete structure to get the cubic yards value of the amount of concrete you will need to make this structure.

Concrete mix ratios are prescribed ratio of cement, sand and aggregate to get the desired strength in concrete. The volumetric mix ratio of M20 concrete is 1:1.5:3, hence 1 part of cement, 1.5 part of sand and 3 part of aggregate in volume is needed to prepare M20 grade concrete.

On-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.

Our Aggregates Calculator will help you determine the quantity of aggregates you need for your project. Please enter the Width, Length and Depth of the area, then click on the Calculate button. Single Sized Aggregates 20mm Ballast Sharp Washed Sand (SWS) Building Sand Slag Type 1 Sub-base Limestone Type 1 Sub-base Granite Type 1 Sub-base ...

Dec 21, 2016· Procedure To Calculate Cement Bags In 1 Cubic Meter: Let us consider the nominal mix is 1:2:4. Loss of cement is considered as 2%. Output of mix is considered as 67%. ... Any one please send mix design for m30 grade of concrete using 1%, 1.5%,2% crimped Steel and poly propylene fibres. Farjad January 25, 2018 at 3:19 pm. Reply. ...

Aug 03, 2018· CALCULATION FOR CEMENT QUANTITY; Cement= (1/5.5) x 1.54 = 0.28 m 3 ∴ 1 is a part of cement, 5.5 is sum of ratio Density of Cement is 1440/m 3 = 0.28 x 1440 = 403.2 kg We know each bag of cement is 50 kg For Numbers of Bags = 403.2/50 = 8 Bags We Know in one bag of cement = 1.226 CFT For Calculate in CFT (Cubic Feet) = 8 x 1.225 = 9.8 Cubic ...

Jul 13, 2018· 1x bag of cement 7.5-8x buckets of ballast Thanks for the volume/weight calcs. Up until now I was struggling to find a YouTube video for a C20 mix for long retaining wall footings for either 4:2:1 or ballast (plenty of videos of people using unmeasured amounts - …

Apr 20, 2017· You'll need a bit more than one 1 ton bags of ballast and around 6 bags of cement I reckon. A 1 ton bag is actually around 900Kg ish, so probably 40-45 bags at 25kg each is my guess. 1:4 ratio is quite strong, 1:6 would be fine - 12 shovels of ballast to 1/2 bag of cement.