ᐅ Curb and concrete: which one is recommended?

Created on: 30 Oct 2018 12:30
3
305er
Hi,

we want to order our paving stones and terrace slabs today and complete the work this year.

For the pathways, the splash guard (30cm (12 inches) wide filled with gravel), and the terrace, we are using a 6x20/25x100 deep curb stone.
That’s the plan, at least.

For the driveway, we are using an 8cm (3 inches) deep curb stone.

In total, there are about 70m (230 feet) of deep curb stones.
My wife’s uncle, who is helping us and works in road construction at the city, said it’s enough to set only the joints in concrete.
I’m a bit skeptical about that.

What do you think? How much concrete would we approximately need if we want to do it properly?
And which type of concrete should we use exactly?
Portland cement concrete, screed concrete, mortar, or fast-setting concrete?

Are these 30kg (66 pounds) bags suitable for this?

Thanks in advance!
A
apokolok
30 Oct 2018 18:51
Um, the calculation method isn’t quite right.
You’ll easily need 40–50 bags of concrete screed.
As mentioned, only about 12–13 bags of cement plus the gravel.
These are all quantities that are better not bought at a regular hardware store; for this kind of stuff, there are building material suppliers. A normal car gets overloaded quickly with just a few bags of concrete—you’ll waste a lot of time driving back and forth.
Where are you buying the curbstones and slabs? Does that shop not also have gravel and cement?
It definitely makes sense to get everything delivered by a truck, since the delivery trip costs money too.
305er30 Oct 2018 18:53
No idea which type of concrete exactly. I just asked how much he charges for a bag of concrete, and then got the price.
But I also think it’s landscaping concrete, which costs more at places like DIY stores than this concrete screed.
What is the difference?
305er30 Oct 2018 18:56
So curbstones, slabs, basically everything, I buy from the building materials supplier. I don’t think they carry gravel or cement. They probably do, but I haven’t asked.
Delivery is free to the site.
305er30 Oct 2018 19:14
Hi, so here is my calculation:

Building store: 40 bags of 40 kg (88 lbs) concrete = 131€ or 152€ from the building materials supplier.

Mixing yourself:
16 bags of cement = 400 kg (880 lbs) = 41.44€
1 m³ (35 ft³) gravel 0/16 = 1600 kg (3527 lbs) = 44.36€
Big bag = up to 1500 kg (3307 lbs) = 21.00€
Delivery = 117.00€

Total for mixing yourself at a 1:4 ratio = about 224€ (from the gravel onward everything from the soil supplier).

Tomorrow I need to quickly check again if my building materials supplier also delivers gravel and cement. Then it might actually be a bit cheaper.

Regarding the earlier question, what is the difference between concrete screed and landscaping concrete?
A
apokolok
30 Oct 2018 19:20
Yes, of course I didn’t know the delivery costs ^^
Try asking the building materials supplier; they definitely have gravel and cement as well.
If ready-mix concrete is cheaper there, buy it from them instead of at the home improvement store, otherwise you’ll spend half a day just driving back and forth (depending on the distance).
305er30 Oct 2018 19:24
Ok, thank you very much. You have been a great help so far!!!