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Published on 9/15/2021

Published by marketing@concretebroker.com.au

Should I use 10mm aggregate or 20mm aggregate in my concrete driveway?

The extra cost of 10mm in your concrete driveway may not be worth it


 

 

Should I use 10mm aggregate or 20mm aggregate in my concrete driveway?

 

Driveways and footpaths are often concreted after your new house is built, by a concreting contractor near you. Many of these concreters prefer to utilise 10mm aggregate or rock in the concrete mix, as it is not as heavy as 20mm aggregate to shovel and push around, then screed. Keep in mind 25 mpa or even 32 mpa strength concrete is the preferred concrete mix for driveways in Australia, whilst 20 mpa is suitable for footpaths and foot traffic. 

 

Most 25 mpa concrete mixes in Australia do have both 10mm and 20mm aggregate in them, in addition to sand, cement and water. Yet if you order 10mm aggregate your concrete mix has all or mostly 10mm rock, and no 20mm.  

 

 

 

Is there a cost difference between 10mm and 20mm aggregate in my concrete mix?

 

In short yes. 10 mm concrete mixes require additional cement powder to cover the smaller 7mm to 10mm aggregate particles. Cement, which acts as the binder or glue in your concrete mix, is the most expensive ingredient, and therefore you are up for an extra $15 to $20 per cubic metre when you choose 10/7 aggregate for your driveways, as opposed to 20/14 aggregate.

 

Is it worth the additional cost?

 

In essence the long term strength and look of your driveway is going to be the same whether you choose 10mm or 20mm aggregate. Though in addition to the fact many concreters like to use 10mm aggregate, concrete pumpers do to. The extra cement in 25/10 mixes and the smaller aggregate size is often easier to pump than 25/20 concrete, and therefore if your driveway requires concrete pumping, your pumper may recommend utilising a 10mm concrete mix.

 

Our recommendation

 

At Concrete Broker we believe its all up to the concreter. Though as 25/20 concrete is a sufficient mix design for your driveway, unless its absolutely necessary, given the incline of the driveway, or the length you need to pump the concrete, the 10mm aggregate mix design is not worth the additional $15 to $20 per cubic metre the concrete plants ask you to pay for it.

 

Looking for a price on your concrete driveway or footpath anywhere in Australia? 

 

Phone us on 0421990251 or 0478230553. Or simply email its on info@concretebroker.com and we can send an obligation free quotation to you.

 

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Tags: concrete aggregates concrete driveway concrete driveways concrete footpath concrete mix concrete supply concreter driveway


This article was written by marketing@concretebroker.com.au all rights reserved. The views and opinions expressed in this article are those of the author(s) and do not necessarily reflect those of concretebroker.com