Mixing methods: what to use and what to avoid

Mixing methods: what to use and what to avoid

The way you mix your concrete matters just as much as what goes into it.

Here is how the main options compare:

Paddle mixer (best option)

This is the best choice for worktop concrete.

Why:

• high control over consistency

• mixes fibres evenly

• low air introduction

• easy to adjust as you go

Best for:

• small to medium batches

• indoor or precise work

• getting a smooth finish

Tip:
Keep the paddle moving and scrape the sides. Do not whip the mix too fast.

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Forced action mixer (ideal if you have one)

This is the professional setup.

Why:

• very even mix

• excellent fibre dispersion

• consistent results every time

Best for:

• repeat jobs

• larger batches

• trade use

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Standard cement mixer (use with caution)

This is where most problems come from.

Issues:

• struggles to mix fibres properly

• fibres can clump together

• uneven mix consistency

• harder to control water

If you are using one:

• add fibres very slowly

• mix longer than usual

• keep batch sizes smaller

It can work, but it is not ideal for worktops.

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Hand mixing (not recommended)

Avoid this for anything serious.

Problems:

• poor fibre distribution

• inconsistent mix

• high risk of weak spots

Only acceptable for:

• very small test batches