Bagged Concrete · Adelaide & SA
Bagged Concrete and Cement
Bagged concrete and premix: concrete mix, rapid set, cement, mortar, lime and sand in bags, for posts, small footings, brickwork, paving and other small jobs. Pick the right bag for the job below and order by the bag, on the same quote as your timber and hardware. Each product shows how its bags come on pallets.
Click and collect, or delivered across Adelaide and South Australia.
- Adelaide and SA building supplier
- Order by the bag, from one up
- Order ahead, click and collect
- Delivered with your timber
Concrete for posts and footings
No-mix rapid set for posts, and concrete you mix in a barrow for small footings, pads and garden edges.
Rapid Set Concrete 20kg
No-mix concrete for fence posts, clotheslines and letterboxes. Starts to harden within 15 minutes.
PROSTRENGTH Rapid Set Concrete 20kg
High strength rapid set concrete for gates, professional fencing and signs. Supports off after 30 minutes.
Concrete Mix 20kg
General purpose concrete for small jobs: posts, small footings, pads and garden edges.
PROSTRENGTH Extra Strength Concrete 20kg
High strength concrete mix, designed for up to 50MPa in lab tests. Walk on it after 24 hours.
Cement
Straight, blended, low carbon and white cements to batch your own concrete, mortar and render.
General Purpose Cement 20kg
Straight Type GP cement for mixing your own concrete, mortar, render and grout.
Builders Cement 20kg
Blended Type GB cement for a creamy, easy to work mix with a smooth finish.
Low Carbon Cement 20kg
A direct replacement for GP cement with 30% less embodied CO2, using the same mix ratios.
Off White Cement 20kg
Light coloured, high early strength cement for decorative concrete, coloured mortar and render.
White Cement 20kg
Bright white cement for decorative concrete, white mortar, render and grout.
Mortar, render and lime
Pre-blended mortars that only need water, plus lime and clay to make your own mix easier to work.
Trade Mortar 20kg
Pre-blended M4 bricklaying mortar for bricks, blocks and stonework. Just add water.
Sand & Cement 20kg
Pre-blended sand and cement mortar for shower bases, toilet pans, paver joints and repairs.
Hydrated Lime 10kg
Hydrated lime to blend with sand and cement for more workable mortar and render with better bond.
Clay 20kg
Finely milled clay plasticiser for mortar and render made with sands low in clay.
Sand, paving and repair
Sand to lock pavers in place, and cold mix asphalt for patching.
Gap Sand 20kg
Paver joint sand that binds when dry and helps keep weeds and insects out, for gaps up to 3mm.
Dried Sand 20kg
Washed, factory dried sand for paver joints, mortar, render and concrete mixes.
Cold Mix Asphalt 20kg
Cold asphalt for general patching and surface correction.
Which concrete for which job?
- Fence post: Rapid Set Concrete
- Clothes hoist or letterbox: Rapid Set Concrete
- Non-load-bearing pergola post: Rapid Set Concrete
- Gate, or professional fencing: PROSTRENGTH Rapid Set Concrete
- Load-bearing post, or a commercial or road sign post: PROSTRENGTH Rapid Set Concrete
- Small footing or foundation: Concrete Mix
- Small pad, mower strip or garden edge: Concrete Mix
- Concrete repair, or a job you want to drill or walk on sooner: PROSTRENGTH Extra Strength Concrete
Paths, driveways and slabs are usually a ready-mix truck job. Bags suit small jobs, under about 0.1m3. See the volume guide on Concrete Mix.
In SA, bagged concrete is often called premix. Ready-mix usually means concrete delivered by truck.
| Compare | Rapid Set Concrete | PROSTRENGTH Rapid Set Concrete | Concrete Mix | PROSTRENGTH Extra Strength Concrete |
|---|---|---|---|---|
| Mixing | None, just add water | None, just add water | In a barrow or mixer | In a barrow or mixer |
| Supports or formwork off | Supports off: after 1 hour | Supports off: after 30 minutes | Formwork off: after 24 hours | Formwork off: after 24 hours |
| Water per bag | 2.0L | 2.0L | 1.75L | 2.0L |
Bags per post hole
Work out the bags for your hole and post with the fence post calculator. As a guide, a 200 × 600mm hole with a 90x90 post takes about 2 × 20kg bags; for Rapid Set, Cement Australia gives about 2 × 20kg bags per post hole.
Cement, concrete, mortar and render
- Cement is a powder that acts as the glue. On its own it is an ingredient, not a finished product.
- Concrete is cement, sand, stone and water. Mortar is cement and sand, for laying bricks and blocks. Render is a cement and sand coat spread over a wall.
- Hydrated lime and clay go into mortar and render to make them easier to work.
Read the guide: Concrete vs cement vs mortar: what's the difference?
Bagged concrete questions
Which cement should I buy?
For mixing your own concrete, mortar or render, start with Builders Cement or General Purpose Cement, and Low Carbon Cement swaps in for GP. For a light or white finish, see Off White Cement or White Cement.
Which product fills paver joints?
Joints up to 3mm take Gap Sand; wider joints take Sand & Cement.
How many bags do I need for my job?
For posts, the fence post calculator works it out for your hole and post: a 200 × 600mm hole with a 90x90 post takes about 2 × 20kg bags. For a small pad or footing, use the slab or footing calculator, or put the sizes on your quote request and we will work out the bags with you. For anything bigger, check the volume guide first.
Can I mix my own concrete?
Yes. Builders Cement is the cement Cement Australia recommends for it, and that page says when mixing your own makes sense. The ratios are in our mix ratio table.
Can I buy a single bag?
Yes. Everything on this page is ordered by the bag: tell us how many bags you need, from one up. Each product page shows how its bags come packed on pallets.
Can I get a disposable pallet?
Yes, when your order includes a full pallet. You can also choose a CHEP pallet, exchanged at delivery; if no CHEP pallet is swapped, a pallet charge applies. White Cement and Cold Mix Asphalt only come on disposable pallets.
What if the exact brand is not available?
Leave “Allow an equivalent brand” ticked when you add to your quote and we may supply an equivalent product to the same specification. Untick it if you need that exact product.
Sources and guidance
The product information on this page comes from Cement Australia's published product data sheets, safety data sheets and website (see each product's Documents section). It is general guidance only. Other manufacturers may give different advice for their own products, so always follow the instructions on the bag and the product's data sheet. Structural work, such as footings for buildings, must follow your engineer's design and the relevant Australian Standards.
Ordering
Order through Allmat. Click and collect or delivered across Adelaide, on the same order as your timber and hardware.