Frequently Asked Questions
What Concrete Mix Does Canadian Ready Mix Supply?
Although our standard mix is 32mpa with 6% air, we also provide a custom concrete mix design that satisfies customer/contractor needs.
What Type Of Concrete Products Do We Supply?
Make use of our concrete mixes for your basement floors, garage floors, driveways, walkways, patios, porches, footings, and walkways. The types of concrete products that we supply are:
Alleviate surface cracking with fibre reinforcement. You can use it in place of rebar and or use it with the rebar. However, it will cost you additionally.
Air entraining admixture
6% is standard for our mix as it helps to form tiny bubbles that protect the concrete from our freeze/thaw cycles. This is included in our price.
Water reducing admixture
Reduces the amount of water required in the mix, thereby increasing its strength. This is included in our price.
Make sure to air entrain the concrete with chemical admixtures as it helps to avoid freeze and thaw action. With proper air entrainment, the placement of very tiny air bubbles (1 mm in diameter) at a very tight spacing reduces the stresses created within the concrete when water expands during its transformation to the ice during cold weather.
How Much Time Do I Get To Unload?
15 minutes per meter.
How Many Wheelbarrows Per Meter Of Concrete?
How Much Concrete Do I Need?
Use our concrete calculator to measure your quantity and then call us to book your delivery. https://www.calculator.net/concrete-calculator.html. We will confirm your amount upon call and schedule your delivery.
Does Weather Affect My Delivery?
Yes! Weather conditions can affect the setting time and concrete placing and finishing. Protection systems must be used for proper concrete placement. Cold weather conditions that can affect concrete:
When the air temperature is ≤ 5°C.
Or when there is a probability that the temperature may fall below 5°C within 24 hours of placing the concrete.
Check the weather status at https://www.theweathernetwork.com/ca.
How Far From The Truck Can You Get The Concrete?
If the concrete is poured on the ground, we can get concrete approximately 15 ft from the concrete truck’s back tires. If it is poured into a wheelbarrow or porch, we can reach a height of 8-10 ft from the back tires.
What Is Your Truck’s Size?
Our concrete trucks are approximately 11 ft 6 inches high, 8 ft wide, and 28 ft long. So keep in mind, we need space and clearance to reach your job site; otherwise, be ready to wheelbarrow the concrete to your location. If you’re unsure, call us, and we can help you navigate the details of your project.
What Are The Key Things To Look For During Concrete Placement?
Has the subgrade been properly prepared and compacted? If you see free-draining aggregate, it means it is properly prepared and compacted as a sub-base. If the concrete truck’s tires are leaving large ruts in the sub-base, then the material has not been properly packed, or it has not been placed in sufficient thickness.
Both the concrete and the sub-base must be property drained and prevented from water build-up. Flowing water and frost heaving are common causes for early deterioration.
Ask for concrete delivery tickets to check whether the correct ready-mix concrete has been delivered.
The standard “shelf life” of concrete is 120 minutes; however, with chemical admixtures, the concrete life extends to more than 120 minutes of placement time. The time batched is always included on the concrete delivery ticket.
Do not add water to the concrete after the concrete placement has started as it leads to higher concrete permeability and lower strengths. A Concrete retemper may be allowed once, but additional water should be avoided if the concrete placement proceeds past a 10% portion of the load. You can use chemical admixture for slump enhancement after the 10% discharge point. It will not hamper the concrete quality.
Has the contractor prepared a joint control layout to prevent uncontrolled cracking? To avoid random concrete cracking, utilize proper control, isolation and construction joints.
How will the concrete be appropriately cured? What curing method will be used to protect the concrete, and how long will the protection be applied? Your contractor must have answers to all those questions. Discuss it before concrete placement to ensure that the proposed methods meet your application’s Ontario Building Code requirements.