19 May 2011

Core Fill & Concrete Blend? There IS a difference!

Posted by bcsands

Introduction to core fill and concrete blend

We sell both core fill and concrete blend and we find that some of our customers confuse these two, so we thought it might be helpful to share some information on these products and their uses.

Both products are made to demand by mixing sand and blue metal – but that’s where the resemblances stop. They actually use different types of sand and different sizes of blue metal and are intended for different purposes.

Let’s talk about Core Fill first. Core Fill is used to reinforce a hollow block walls – it’s a specialized mix specifically for this job. It’s made of a mixture of River Sand and Blue Metal. The size of the Blue Metal used depends on the size of your blocks, but it’s usually 5mm for smaller blocks with narrow gaps, and 10mm for larger blocks. We mix the River Sand and Blue Metal for you and when we deliver it, you simply add cement and water to get to the strength you require.

Concrete blend is used for making concrete for a range of purposes. It’s a mixture of Sydney Washed Sand and usually three sizes of Blue Metal: 5, 10, 14mm sizes. The range of sizes allows an aggregate that mix together well for a stronger concrete. Again, we deliver the sand and the blue metal mixed together, and you add cement and water to get the strength you need. A good concrete mix contains just enough water to make it ‘workable’ – the right consistency to handle and place. Too much water will lower the strength of your finished concrete.

Other products that you might need when you are using core fill, other than the blocks themselves, of course, are cement, deformed bar, a cement mixer, shovels and wheelbarrows. For general concreting, depending on the job, you will need cement, a cement mixer for bigger jobs, shovels, wheelbarrows, and a Larry Hoe for smaller jobs.

Tips for mixing concrete

Measure quantities carefully (don’t use a shovel!)
Put the mix in before the cement
Don’t overload a cement mixer – your blend will take longer or may not mix at all
Use only enough water to get a workable mix

Mixing concrete isn’t difficult as long as you are careful. If it seems a bit daunting, then give us a call. We can send out our Mini Mix truck with a load of pre-mixed concrete for you!

Introduction to core fill and concrete blend
We sell both core fill and concrete blend and we find that some of our customers confuse these two, so we thought it might be helpful to share some information on these products and their uses.
Both products are made to demand by mixing sand and blue metal – but that’s where the resemblances stop. They actually use different types of sand and different sizes of blue metal and are intended for different purposes.
Let’s talk about Core Fill first. Core Fill is used to reinforce a hollow block walls – it’s a specialized mix specifically for this job. It’s made of a mixture of River Sand and Blue Metal. The size of the Blue Metal used depends on the size of your blocks, but it’s usually 5mm for smaller blocks with narrow gaps, and 10mm for larger blocks. We mix the River Sand and Blue Metal for you and when we deliver it, you simply add cement and water to get to the strength you require.
Concrete blend is used for making concrete for a range of purposes. It’s a mixture of Sydney Washed Sand and usually three sizes of Blue Metal: 5, 10, 14mm sizes. The range of sizes allows an aggregate that mix together well for a stronger concrete. Again, we deliver the sand and the blue metal mixed together, and you add cement and water to get the strength you need. A good concrete mix contains just enough water to make it ‘workable’ – the right consistency to handle and place. Too much water will lower the strength of your finished concrete.
Other products that you might need when you are using core fill, other than the blocks themselves, of course, are cement, deformed bar, a cement mixer, shovels and wheelbarrows. For general concreting, depending on the job, you will need cement, a cement mixer for bigger jobs, shovels, wheelbarrows, and a Larry Hoe for smaller jobs.
Tips for mixing concrete
Measure quantities carefully (don’t use a shovel!)
Put the mix in before the cement
Don’t overload a cement mixer – your blend will take longer or may not mix at all
Use only enough water to get a workable mix
Mixing concrete isn’t difficult as long as you are careful. If it seems a bit daunting, then give us a call. We can send out our Mini Mix truck with a load of pre-mixed concrete for you!

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