Concrete in Hot Weather Solution Series-3

This will be the 3rd article of the series we have prepared on pouring concrete in hot weather and controlling the temperature of concrete. In this article, we will calculate the temperature of concrete with a sample concrete mix ratio and temperature values.

In our previous article, we shared the formula used for calculating the temperature of concrete. In this article, we will calculate the temperature of concrete by giving examples using that formula.

Let's determine the component amounts of a sample concrete mix:

Water = 180 kg/m³

Cement = 300 kg/m³

Sand = 651 kg/m³

Aggregate = 1190 kg/m³

There is 4.2% surface moisture in fine aggregate. Since the temperature of the components at the time of pouring is: cement 50°C, sand and aggregate 30°C and water 25°C, let's find the temperature of fresh concrete.

Since the temperature of sand and aggregate is the same,

What should be the water temperature for the fresh concrete temperature to be 26°C?

How much ice should be used for the fresh concrete temperature to be 22 degrees?

In concrete cooling projects, fresh concrete temperature values ​​calculated using these formulas and the amount of cold water and ice required in 1 cubic meter are calculated. Then, ice plant and chiller plant capacities are calculated according to the amount of concrete produced daily.

For example, the amount of water needed for a concrete plant producing 1000 m³ of concrete per day is 180000 liters. If the fresh concrete mixture temperature is desired to be reduced to 26 degrees, a chiller with a cooling capacity of approximately 200 Kw will be required.

If a concrete mixture temperature of 22 degrees is targeted and it is considered that it is used with a chiller with a cooling capacity of 200 kW, it would be appropriate to use an ice plant with a daily production capacity of 40 tons and a storage capacity of 20 tons. The capacities have been selected by taking into account temperature fluctuations and losses. If you specify the temperature values, mixture quantities and location in your concrete cooling applications, Evanso will make the appropriate device selections for you free of charge.