How Long Does Concrete Take to Dry?

How long does concrete take to dry? There are many factors that can affect the drying process. Some of them are Curing time, Water/cement ratio, and Slab depth. This article will discuss some of them. Read on to learn more. Wet curing and the amount of water in the concrete mix will also be discussed. The more water that is present in the concrete mix, the longer it will take to dry.


Curing concrete takes time, so make sure you have ample patience. It may seem counter-intuitive, but if you’re rushing to complete a large project, you’ll end up compromising the strength of the finished product. Using a “70 in 7” rule, concrete will reach its specified compressive strength within seven days. By this point, it should be able to withstand most of the weight that it will face, such as cars and trucks.

Wet curing

If you’re planning to pour a foundation for a new home, you might be wondering: How long does it take for concrete to dry? The answer to this question varies depending on several factors, most notably the outside temperature, water content, and mix type. Generally, concrete is ready for vehicle and foot traffic after 24 to 48 hours, and it will be strong enough for other purposes after 28 days. To answer this question, you can contact a local concrete company and get all the details. They will give you the best warranty for your work, as well as a concrete curing time chart.

Slab depth

The time it takes for a concrete slab to harden depends on several factors. Concrete can appear to dry rapidly, but it does not completely harden until it reaches 85 to ninety percent relative humidity. A slab that is two to three inches thick will take between 28 and 30 days to completely harden. The temperature outside also plays a significant role in the drying process. Cold temperatures will cause concrete to dry slower than hot ones. Pouring concrete in the springtime is the best time to do this.

Water/cement ratio

A low water/cement ratio will cause the consistency of the mixture to deteriorate, causing it to have a reduced water-cement ratio. When this happens, bleed water can be lost through the concrete, and the material can develop curing-related problems. In such a scenario, concrete will lack bleed water, a buffer that helps prevent the onset of plastic shrinkage cracking. The concrete will also suffer from internal desiccation, a phenomenon that can cause cracking in concrete.


When constructing a home or building, it is important to understand that concrete never completely dries. The drying process is called hydration, and it begins once the water is mixed with the dry concrete mix. Depending on the humidity level, this process can take from an hour to several days. But the process itself is quite simple. Follow these steps for the proper drying time for concrete. Then, prepare your home or building for the elements by avoiding hot, humid conditions.

Moisture content

Concrete’s moisture content will change over time. An equilibrium moisture content depends on the relative humidity of the surrounding air. When concrete is wet, it remains damp on both the surface and depth. As it dries, its moisture content will decrease. The equilibrium moisture content is attained at approximately an inch per day. In addition, the slab’s depth will play a significant role in drying time. Consequently, concrete should be left to dry at least 24 hours before placing a new floor or slab.


What is Concrete?

The History of Concrete

Category: Concrete

Leave a Comment

Your email address will not be published. Required fields are marked *