Categories

Tips To Cure Concrete In Penrith In Winter

concrete Penrith

If you want to cure concrete in Penrith during the cold weather, you need to have the proper material and knowledge.  Temperature, humidity, water, and snow are factors that can complicate concreting in winter.  Ensure not to pour concrete on frozen ground and be very cautious when the temperature drops below freezing point. 

Read on to follow our simple tips to cure concrete in the cold season: 

1. What temperature to maintain?

The batch plant temperature should remain somewhere between 45 to 70 degrees. The higher end of this temperature range is necessary for thin concrete pours and cold outside weather conditions.  If the air temperature is less severe and the concrete pour is thicker, a lower temperature is acceptable at that range. 

Here are some more temperature tips to guide any cold-weather concrete work- 

  • The corners, edges, and surface of the poured concrete are most vulnerable to cold and are most critical to protect. 
  • Remember that surfaces with direct contact with fresh concrete must be free of ice, snow, and frost. Moreover, you should never place concrete in Penrith on a frozen subgrade. Before the pour, it is good to thaw the subgrade by placing Hydronic heating tubes directly on the subgrades or on top of the insulating blankets. 

2. Protecting concrete from severe temperature:

Here we suggest the best protection methods to protect curing concrete of surrounding cold air. 

  • As concrete throws off heat during chemical reactions of curing, insulated frameworks and insulated blankets are sufficient to maintain the right curing temperature. You should secure them properly so that wind cannot blow them off. It is also crucial not to trigger thermal stress via overheating resulting from over insulation. 
  • Robust heated and weather-proof enclosures are perfect for protecting concrete within buildings. But you might need additional water or a curing membrane to protect the surface from drying due to heaters’ use.  

3. Curing concrete at freezing temperature:

You need to remember this fact as the definition: if the air is low or is expected to drop below 40 degrees Fahrenheit, you need to use cold weather techniques. 

Concrete in Penrith in freezing weather does require curing as the surface might freeze faster than in warm weather. That is of immense importance if the concrete is warmer than the air outside. 

While finishing concrete in freezing weather, you still need to wait for all the bleed water to evaporate. Bleed water is nothing but all the concrete particles settling and squeezing all the extra water. When you finish this water into the surface, you increase the water-cement ratio to get weak surface concrete. As the concrete is settling more slowly during the cold, bleeding begins later, will last longer, and bleed more water. You can try to get it off with vacuums or squeezing, or you can wait for the process to complete naturally. 

Last, but not least:

Concrete additives such as non-chloride accelerators might reduce or eliminate the need to protect and heat concrete in Penrith in cold climates. After the curing period is over, it is advisable not to expose concrete suddenly to freezing temperatures.