Concrete Mix Calculator Sand Gravel Cement

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.

Concrete mix calculator sand gravel cement.

The way you measure the ratio could be in shovels buckets or wheel barrows. All yields are approximate and do not allow for uneven substrate waste etc enter number of square feet desired. Concrete mixes enter the size of the slab you want to build in square feet. Our mix on site concrete calculation is based on batching by volume large construction sites employ batching by weight which is more exact.

The mix ratio of 1 2 3 consists of 1 part cement 2 parts sand and 3 parts stone plus some water to make a concrete mix you can use for most any building project. Paving mix 1 3 cement all in ballast or 1 1 2 cement sharp sand gravel. The calculator will indicate the number of 60 lb bags you will need to build a 4 inch or 6 inch slab. The below table gives a basic indication of the mix ratios used for different purposes but should be used as a guide only.

As 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. As long as you re consistent you ll get a good strong mix. Preparing the right mix. Simply multiply the volumetric quantity of sand and gravel with 1400 kg m 3 bulk density of sand and 1600 kg m 3 bulk density of stone respectively when calculating in metric units.

Some additional things to consider when finding a suitable mix design. Please enter the dimensions in the white fields below and click calculate to display the results. You can also estimate the quantity of sand and gravel required by weight. 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.

If you are wondering how 1 2 3 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 which will accommodate some sand and when 2 parts sand is mixed with 3 parts gravel the final volume will reduce down to about 5 parts. Both of these concrete calculators make an allowance for the fact that material losses volume after being mixed to make concrete. Concrete mix ratios cement sand gravel more properties. 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.