How do we dose ArmoTec macro fibers into the concrete?

Mixing ArmoTec macro fibers is very simple. All you need is a kitchen scale and a large sour cream container or a pill bottle.

We wrote about the correct mixing ratio of concrete here: Concrete mixing ratios: aggregate-cement-water

When mixing concrete at home, using a ratio of 1 shovel of cement to 4 shovels of aggregate mix is likely a safe bet, and add enough water so it doesn’t slump apart! Too watery concrete is harmful to health and significantly reduces the quality of the concrete. When it evaporates, there is a much greater risk of cracking. However, it’s best to use a scale for the initial mix. A personal scale is found in almost every household.

The mixing of ArmoTec macro fibers is always indicated per cubic meter of concrete, for example, 3 kg/m3 (this being the most common dosage). To determine the exact dosage, use our calculator, which also provides you with information on how much you save by using macro fibers compared to traditional steel reinforcement. You can access it here:

There are several options for incorporating macro fibers depending on the method of concrete placement.

1. If we order the concrete from a batching plant.

First, you need to coordinate with the batching plant that you will be adding structural macro fibers to the concrete on-site, and the mixing of the macro fibers will take place there. Once the mixer truck has arrived and taken its place, you simply need to feed the required amount of macro fibers into the hopper and mix at full speed for as many minutes as there are cubic meters of concrete in it.

2. Mixing at home, with a concrete mixer.

You can only use ArmoTec if you didn’t fail math in elementary school 😅. If you did, then you won’t be able to do concrete work either. But that’s not you.

I’ll illustrate the home dosage using this simple example. (The required dosage in our case is 3 kg/m3.)

We need to measure the capacity of our concrete mixer to know how much ArmoTec to add to each mix.
This can be easily done by preparing a batch of concrete and pouring it into buckets whose capacity we either know or measure with water. Then we can easily calculate the volume of our mixer.
The most common concrete mixers have a capacity of 120 liters, but you can only fill them half with concrete. These are the single-wheelbarrow mixers. This means you can make approximately 50-60 liters of concrete with them.
In the example, we need to add 3 kg of ArmoTec to 1 m3 of concrete. With our concrete mixer, we were able to make 50 liters of concrete at once, which is the twentieth part of 1 m3.
So we divide the 3 kg by 20, the result being 0.15 kg, which is 150 grams or 15 decigrams.
We pour back the concrete used for measurement into the mixer and add the 150 grams of macro fiber measured with the kitchen scale.
Mix for 1-2 minutes, and our super-strong concrete is ready.