Can You Mix Mortar And Concrete? | Explained

Mortar and concrete Can’t be mixed because they both have different water to cement ratios. One more thing that makes them different is the Gravel or aggregates, they are present in concrete but not in mortar.

However, making mortar into concrete is possible with DIY methods if no other option is left. But you cannot convert concrete to mortar. Besides, you can also mix mortar on the already cured concrete surfaces to fix cracks, minor repairing, or pour another coating.

Before making concrete from mortar, you need to understand the difference in the production process of both mortar and concrete.

What Is The Difference In The Manufacturing Process Of Mortar And Concrete

For the mortar and concrete-making procedure, cement, sand, and water (also aggregates for concrete) are placed in separate buckets.

To create a mortar mix, the ratio basis is usually 3 or 4 parts of sand to one part of cement. However, It may vary how wet or dry you want the mixture to be. The ratio also depends on the strength you are trying to create. The standard concrete mix has the one part cement to the two parts of sand to the four parts of aggregates.


However, the concrete mix has a different ratio range according to its use. The ratio gets changed for foundations, slabs, patios, etc. For instance, you will have to mix one part of cement, three parts of sand, and six parts of aggregates for foundations.

How To Make Concrete From Mortar Mix?

It is possible if and only if you are perfect in your measurements and calculations. As per the above ratio of mortar, your mortar mix has three parts of sand to one part of cement. Hence, for creating a concrete mix, you will need to follow these steps –

Step 1: Measure And Get The Proper Ratio Of All Ingredients On a Priority Basis

We need 1 part of cement to 2 parts of sand and four parts of aggregates for standard concrete. Generally, it may vary according to your purpose, so you may moderate the ratio yourself.

So, you already have some ratio of mortar. Hence, forgetting two parts of sand, you will have to double up the concrete measure for now. In a mortar, there are three parts to sand and the requirement is of two parts, so you can do one thing –

Take one more part of sand to get four parts of sand, next take one part of cement to get two parts of cement and 7 to 8 parts of aggregates. So your standard concrete mix is ready from your mortar mix.

Note: Tip the sand and aggregate onto your mixing board or in the container. Form a crater in the middle of the pile if you are using a board. Next, measure the cement you are using and pour it into the crater’s center, creating a cone-like structure.

Step 2: Start Mixing

After the appropriate measuring, it is time for mixing. Use a shovel and mix all ingredients together. All you need to do is turn the created pile around four to five times to mix everything evenly and get a consistent color throughout the pile.

Make a cone-like shape and create the next crater in the middle. Now you will have to use water to fill in the crater. There is no specific amount of water set for adding; simply pour enough water to fill the crater slightly. It must be enough to produce a smooth paste once you begin to mix it.

Move sides of your crater in the mix and turn it to distribute water evenly throughout the mixture. As you see the water begin to absorb in your ingredients, you will have to repeat the procedure, whether in the container or the wooden board.

Continuously turn your mix until you see that the mixture is wet. If it looks perfect, go for testing the consistency.

Step 3: Check And Adjust Your Mix

When you see the mixture is wet enough, use the shovel edges to make imprints in the mix’s top to test its consistency. The mixture must be consistent and smooth – not crumbly or dry to make it right.

If the mix is too watery or runny or its ridges collapse quickly, you might have added too much water. Add more dry ingredients for solidifying the mixture. Getting a correct consistency is all about trial and error, so there is no need to worry if you do not have the perfect mix at the first trial.

Step 4: Begin Working

Once you are satisfied with your mix and have the correct texture/ consistency, it is time to start working. Usually, simply shovel or pour concrete into the area and screed it if needed to get a smooth finishing.

Can You Use Mortar Mix Into Cured Concrete Surfaces Together?

Generally, the concrete mix cannot repair its already occurring concrete surfaces. So it is recommendable to use the concrete repair mix or mortar. Fill the cracks or minor edges issues with the mortar mix on the concrete surfaces.

Mortar mix can be used over the concrete surfaces because it will repair the surfaces appropriately with good strength rather than concrete mix.