Alpha Quarry

What strength of ready mix concrete do I need?

Most foundations need 20 newton but check your plans.

30 newton air entrained concrete is preferable for durable out door concrete exposed to the freeze thaw cycle

How do I calculate how much ready mix concrete I need?

Length x Width x Depth
10.5m x 3.4m x 0.1m (4 inches) = 3.57 m3 of ready mixed concrete.
If you work it out in inches, multiply your answer by 0.25 
If you work it out in feet, multiply your answer by 0.3 
If you are unsure bring your measurements with you and we will work it out for you

How do I calculate how much floor screed I need?

Work out as above (Ready Mix Concrete)

What weight is a metre³ of ready mix concrete?

2.3 tonne

How many tonne equals a metre³ of quarry stone?

Approx 2 tonne

How long will building mortar stay workable for?

Normally 36 hours. Extra retardation can make it last up to 72 hours. Covering the mortar well will help to hold the workability especially in hot weather.

How long will plastering mortar stay workable for?

Normally 8 to 12 hours. If curing does not begin relatively soom after applying to the wall there is the chance of losing grip. Covering the mortar well will help to hold the workability especially in hot weather.

What area will a tub of plastering mortar cover?

Approx 25m³

Is retarded mortar suitable for all structures and all year round?

No, in the colder weather site mixed building mortar is more suitable for gables and exposed areas as the curing time is quicker.

How many 100mm concrete blocks can you build with a tub of building mortar?

Approx 120 blocks on their flat
Approx 180 blocks on their edge
Approx 500 65mm concrete brick

How much does a mortar tub contain?

It contains 0.33m³

What strength are blocks?

Blocks come in strengths 7N, 10N and 15N. Other strengths will be special orders. Most general blocks will be 7N as standard.

What size of quarry stone do I need?

  • To fill areas more than 2 metres deep?
    Face Rubble
  • Large areas needing drained.
    4" clean
  • Large areas needed for hard standing before concreting
    4" crusherun
  • Small areas needing drained
    2" clean
  • Small areas needed for hard standing before concreting 
    2" crusher run
  • To top of an area to use as a finished hard standing 
    Fine Blinding
  • To mix concrete or use as a clean material for hard standing 
    20mm stones
  • To mix concrete or use as a clean material for hard standing 
    14mm stones
  • To mix concrete or use as a clean material for hard standing 
    10mm stones
  • For pipe beding
    6mm stones
  • For laying flags or pavers
    Dust

What width is a lorry?

Most of the lorries are approximately 2.44m (8ft) in width

How much does a lorry carry?

Block Lorry – 1056x100mm(4”) blocks, 792x300mm(12”) blocks or 768x140mm(6”) Blocks. Any mix of different sizes can be delivered up to the lorries maximum weight, please contact Alpha Quarry Products for details.

Concrete Lorry 4x4 – 3.5m³
Concrete Lorry 6x4 – 6-7m³
Concrete Lorry 8x4 – 8-9m³
Tipper Lorry - 6x4 – approx 16.5 tonne
Tipper Lorry - 8x4 wheeler – approx 20 tonne

Is there a minimum quantity if I collected it myself from your site?

No minimum collection amount for blocks or stones. The smallest amount of concrete we can batch is 0.3m³

Is there a minimum delivery quantity?

There is no minimum delivery.

If I collect material on site how long before closing time should I be in?

For concrete and mortar 30mins before closing time.
For stones and blocks 15mins before closing time.
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