Using superplasticizers for building residential towers

The excessive amount of water in concrete significantly reduces its strength and durability. For this reason, experts in this field have looked for suitable Iranian concrete admixtures for many years to replace them with water. The products that have been entered the construction industry are known as water-reducing materials. One of these products being paid attention to today is known as plasticizer and can be used in concrete compounds. Today, Iranian concrete superplasticizers are widely used in building residential buildings and provide suitable conditions for construction.  

What is the dosage of using this material?

Individuals purchasing the superplasticizer may have questions about the percentage of using this material in the cement. First, we should know that these products are based on Polycarboxylate ether and create fewer bubbles in the concrete with respect to their properties and finally produce high-strength concrete. The engineers indicate that the amount of using this material in concrete is 0.1 to 1.4 percent of the weight of the cement.

Note that you should never use this material less than the standard limit since it may develop unsuitable changes in the concrete. On the other hand, the excessive use of superplasticizers leads to concrete retarding and this may last for 48 hours. Therefore, standard compliance is one of the items that should be taken into account while using this product.  

Attention to the climate conditions

It is better to know that you should determine the dosage with regard to the climate condition when you purchase the superplasticizer in the south of the country. Also, if you want to use this material in the North of the country, the previous ratio will not be usable for you. The climate condition is one of the most important factors that affect the amount of using this material in the concrete compound.

On the other hand, note that the project being implemented on the 10^th floor differs from the project being implemented on the 1^st floor. According to engineering principles, the higher the height of concrete casting is, the more consistent the concrete will be. In all big, important projects, engineers and individuals working as foremen, use a specific amount of iranian concrete plasticizers at the right time. 

What factors affect the amount of using this material?

As noticed above, the superplasticizer is one of the building admixtures which improve the physical and chemical characteristics of the concrete and mortar. The climate condition is one of the issues that affect the amount of using this material. Also, height is another factor that should be taken into account when adding the material. You can determine the amount of using the admixture by using artificial intelligence and computer models. The factors affecting the number of superplasticizers are as follows:  

• The time of setting concrete
• The concrete casting model and the pumping method
• The shrinkage percentage of the concrete in the environment
• The required permeability for concrete
• Concrete rebar
• The warmth and humidity
• The physical and mechanical properties of the cement
• The chemical properties of the cement
• The slump
• The amount of heat removal in the cement

You may use a specific amount of the superplasticizer in two different types of cement and understand that the consistency of the two types is different. It is due to the physical properties of the cement.

Using the superplasticizer in the concrete

You can add this admixture to the concrete when it is being constructed. Also, you can add this admixture to the desired compound at the site of the project once the concrete is ready.

The plasticizers are highly dense and strong. Therefore, you should dilute the admixture with water and then add it to concrete. This doubles the effect of this material on concrete. The instruction to use the superplasticizer in concrete is as follows:

• In concrete plant: to produce the concrete in the factory, first, the materials are mixed in the batching. Then combined via special processes. This is done by devices that have high erosion. It is better to use faster devices if you want to increase the consistency and hardness of the concrete, however, it is not cost-effective. Using plasticizers significantly reduces the erosion of the devices.  
• In the site: sometimes some circumstances arise which the employer notices that the superplasticizer is not added to the cement compound, therefore the concrete does not have the required consistency. It is when the consistency can be increased with these materials. Speed and accuracy are the two factors that should be taken into account. Since if you do not have sufficient accuracy, you may ruin concrete and it will not be usable anymore.
• In the laboratory: generally, the laboratory is the most ideal environment in which these materials can be used. As everything is under control and you can gain acceptable results. You can also consider all conditions and probabilities in the laboratory. This makes you a more scientific and accurate view therefore, you will have a concrete with very particular properties. 

You should know that this is costly and is not cost-effective in big projects. The method we introduce in the following is the best method among all the introduced approaches so far.

• Hybrid: by this method, you can add the superplasticizers both in the factory, batching, and site to the concrete. This method is approved by all experts and has been scientifically proven. You reduce the depreciation of the devices when you use these materials in the factory as well as producing concrete with very high capabilities.

Also, adding these materials to the project significantly improves the physical and chemical properties of the concrete, and eventually a concrete with very high capabilities is available to you. This helps you build residential towers with high accuracy and delicacy and makes you highly satisfied with the results in the end.  

Final word

It is tried to provide you with sufficient information about the superplasticizers in building residential towers, so far. You have to pay attention to the climate condition and the height when using this material in concrete. Undoubtedly, the dosage added to the concrete in hot weather is different from the dosage added to the concrete in cold weather, and this should be taken into account.

The Hamgerayan Production Company (Capco manufacturer of construction chemicals) is a knowledge enterprise that is technically active in this field and tries to provide you with the best services by relying on the inside ability and localized knowledge. You can contact the company at 02189331 for more information.