Hot Weather Concreting: How to avoid the problems that it presents
Pouring concrete in hot weather
Laying down concrete requires certain materials and equipment. Additionally, there are certain weather conditions that are needed for pouring and laying concrete. Extreme temperatures can make laying concrete even more tedious than it already is. here are some problems with hot weather concreting and how to avoid them:
Issues that can arise during hot weather concreting
Water is a big part of ready mix concrete. It’s the ability to control the moisture within concrete that allows for proper setting and curing. Issues, such as having too little or too much moisture, can arise. When it comes to hot weather concreting, the issue is usually too little moisture. Experts say that temperatures of 80° F and above can be create issues with the concrete laying process. North Texas commonly sees temperatures above 80° for over half the year! Here’s how high temperatures can affect concrete:
- Accelerated slump loss
- Greater potential for plastic and thermal cracking
- Loss of long-term strength
- Setting and curing taking place at the wrong times
- Cold joints forming
Basically, it’s best for concrete to have enough time to cool (except in extreme cold temperatures). When it cools, it hardens and takes shape. Therefore, hot temperatures can reduce time given for concrete to cool, preventing it from reaching its maximum strength. However, it’s not just hot temperatures that can do this. High winds and high humidity can also contribute to this.
Going back to moisture control…
When you hire experts to handle the concrete pouring, they’ll be able to make sure that the concrete stays moist.
How to handle issues that might arise during hot weather concreting
There are many ways to prevent issues from popping up while pouring concrete in the hot weather. Here are some:
- Lay concrete during the cooler times of day. That way, your day can proceed as usual.
- Moistening the subgrade. The subgrade will probably end up staying moist since it won’t be exposed to the sun.
- Prepare your staff for escalated curing. Whether this means using more equipment, workers, or both, these adjustments must be made to achieve the best results.
- Guard concrete from external factors by using sunshades, wind breakers, sheeting, evaporation retarders, etc.
- Intentionally cool one or more of the aggregates included in the concrete mixture. With this, the concrete will cool down and be able to handle the external heat.
- Lay the concrete after the walls and roof are built. This will better manage the heat by protecting the concrete from the sunlight.
- Cover all equipment when they’re not in use to prevent them from heating the concrete.
T&T Redi Mix LLC will provide expert services, and they can handle pouring concrete in hot weather. Call us at (214) 785-8037 and visit our website—www.tntredimix.com—to learn more about our products and services. Also, check out our blog for more concrete pouring preparation and execution tips.