This page contains some very useful information and tips about concrete ordering and handling.
- Order the correct mix for the type of pour, placement, and weather conditions.
- Place concrete on uniform sub-grade that is compacted and has same thickness throughout.
- Water should not be added to mix unless absolutely necessary. Adding water can affect durability and strength of mix.
- Joints should be cut ¼” depth of slab.
- Apply curing compound as soon as possible without affecting finish of concrete.
Cold Weather Tips
Concrete will freeze at temperatures below 32 degrees. Freshly placed concrete in cold temperatures (below 40 degrees) needs to be protected until it reaches 500 PSI. There are steps a contractor can take to help with these conditions.
- Order concrete with heated water to help raise concrete temperatures. You should not place concrete that is below 50 degrees.
- Accelerators such as calcium chloride or non-calcium chloride should be used to speed up the set time of concrete.
- Limit the amount of water in the concrete mix. The lower the slump the quicker the set time.
- Use insulated blankets or plastic with straw to protect the concrete against freezing. You may have to cover for up to a week.
No matter what time of project you come across we have a mix that will do the job. We specialize in making sure your needs are met.
- 1 day or 3 day Mixes
- LSM Fill Mixes
- Pervious Concrete
- High Slump Mixes
- Block Fill
- Integral Color Concrete
If you need it, we can make it!
One of the most important acts you can do for your freshly placed concrete is to cure. Concrete hardens during a process called hydration. It uses the water in concrete to chemically bond cement. Without curing moisture will leave concrete. Once the moisture is gone hydration stops and so does strength gain. Curing should be done on freshly placed concrete as soon as you can apply it without hurting the finish.
There are different ways to cure concrete but the most common method is to apply a thin liquid membrane to the surface. We sell a variety of cure and seal products that we will bring out on the truck. You can find the list on our Building Products page by clicking here.
Warm Weather Tips
Extreme warm weather can adversely affect concrete in several ways. They can increase the water demand of concrete, increase set time, and increase the potential for plastic shrinkage cracks. There are steps contractors can take to help with these conditions.
- Avoid pouring concrete during the hottest time of the day.
- Order retarder or use some cementious material to slow down set of concrete.
- Use evaporation retarders on fresh concrete to help avoid plastic shrinkage cracks.
- Curing the concrete is essential as soon as possible.
- Have enough manpower on site to help with faster set time.