1. How Long Does Concrete Last Before Going Hard?
According to Australian Standards, concrete should be used within 90 minutes of leaving the concrete plant.
2. Should I Place Steel Reinforcement in My Concrete Slab?
Introducing steel reinforcement in concrete improves its strength and tension. In a slab-on-ground, reinforcement increases tensile strength and helps control the width of shrinkage cracks. Consult a structural engineer for poor soil conditions.
3. How Many Bar Chairs Do I Need?
Bar chairs sit beneath sheets of reo mesh to support them off the slab floor. The most popular size for residential slabs is 50/65 mm, ensuring proper concrete binding for maximum strength.
4. Does the Concrete Come Ready Mixed, Or Do I Have to Mix It Myself?
Concrete trucks deliver pre-mixed concrete to your site. Prepare your slab and await the truck's arrival.
5. Can I Receive Concrete on Weekends?
Yes, Saturday is a popular day for homeowners to pour concrete.
6. What Aggregate or Soil Should I Lay Under My Concrete Slab?
Most concreters recommend laying crusher dust under the slab for a smooth surface and consistent stabilisation. Contact us for delivery pricing.
7. How Do I Make My Concrete Harden?
Concrete hardens through hydration, the chemical reaction between cement and water. Keep the surface moist after placement to permit hydration.
8. What is Meant By 'Curing' Concrete?
Curing concrete involves maintaining moisture for approximately 28 days after placement. Wet with hessian and sprinklers, cover with damp hessian or plastic sheets, or use curing compounds for faster hardening.
9. Can I Have 'Coloured' Concrete?
Yes! Choose from our wide range of colours, and we'll mix your concrete accordingly.
10. What Is Exposed Aggregate, and Can I Have It Supplied with My Concrete?
Exposed aggregate is popular for driveways and paths. We can supply this finish for your project as needed.
11. Why Does Concrete Crack?
Concrete cracks due to volume changes during drying. Properly placed control joints can allow controlled cracking.
12. How Can I Prevent My Concrete Cracking?
Proper site preparation, reinforcement placement, and concrete placement are essential. Avoid concreting on hot, dry, or windy days.
13. What Causes Surface Dusting on My Concrete Slab?
Surface dusting results from finishing the surface too early. Apply a chemical surface hardener or sealing product to fix the issue.
14. How Can I Remove Oil and Grease Stains from My Concrete Slab?
Absorb excess oil, apply a poultice, and scrub with warm water and detergent.
15. What Are 'Waffle Pods' and Why Are They Used?
Waffle Pods are a foundation system that sits above the ground, minimising earthworks and susceptibility to weather conditions.
16. How Do I Lay 'Waffle Pods' in My Slab?
Prepare the site, lay subfloor pipes, lay crushed rock, set up formwork, place waffle pods, insert reinforcement, and pour concrete.
17. Why Do People Choose 'Waffle Pods' Over a Normal Slab?
Waffle Pods require minimal earthworks and provide better resilience to weather conditions.
Are there any other questions that you may have and you don’t see here? Get in touch with us today at 07-5573-8000!
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