Chemical Admixtures - Cement
Superplasticizers, also known as plasticizers or high-range water reducers (HRWR), reduce water content by 12 to 30 percent and can be added to concrete with a low-to-normal slump and water-cement ratio to make high-slump flowing concrete.
What are the uses of a plasticizer in concrete?
Plasticizers are used to improve the workability of concrete without sacrificing the strength characteristics particular for pumping RMC etc. They are also added to decrease the setting time and improve curing within a shorter period than normal. Ashutosh Gupta Civil Engineer at Government of India (2018–present) 2 y Related
Have you used plasticizers in concrete?
Plasticizer is used in concrete as a water reducer. To a point, concrete with less water increases it’s strength, as long as it is able to flow into place and settle properly, which may be achieved by compacting or vibration using mechanical means.
Superplasticizer
Plasticizers are chemical compounds that enable the production of concrete with approximately 15% less water content. Superplasticizers allow reduction in water content by 30% or more. These additives are employed at the level of a few weight percent. Plasticizers and superplasticizers retard the curing of concrete. [1]
Plasticizers For Concrete - Principle, Types & Advantages
Advantages of Plasticizers in Concrete. Improves workability of concrete without the addition of extra water. Improves the strength of concrete without increasing the cement content. Increase the strength characteristics of the finished concrete foundation by twenty five percent. Plasticizers make the compaction easy without the use of vibrators.
- What is a plasticizer in concrete?
- and more resistant to cold. A plasticizer is an additive used in concrete to improve its workability, performance, and durability. Plasticizers are typically added to concrete mixes to make pouring, shaping, and finishing easier. They can also help to increase the strength and reduce the permeability of the hardened concrete.
- Can you use plasticizers on concrete?
- Concrete is a popular and adaptable building material that is strong and long-lasting. But working with concrete can occasionally be difficult, particularly when the proper mix consistency and workability aren’t achieved. Here’s where plasticizers are useful.
- How do Plasticizers make concrete stronger and last longer?
- Plasticizers make concrete stronger and last longer by reducing the amount of water and cement needed to reach a certain level of workability. Since the heat of hydration of mass concrete goes down when the cement weight goes down, plasticizers can do this. Plasticizers and water reducers are chemical admixtures used to make concrete more workable.
- Why do we use super plasticizer in concrete?
- Nowadays the use of super plasticizer has become a universal practice to reduce the water/cement ratio for the given workability. The reduction in water/cement ratio increases the strength and improves durability of the concrete. Sometimes plasticizers are used to reduce the cement content and heat of hydration in mass concrete.
- Why do we use plasticizer?
- The utilization of plasticizer is found to improve the attractive characteristics of the plastic or green cement. For making reinforced concrete or mass cement of higher workability these days, it has become a standard practice to utilize plasticizer or superplasticizer.
- How do plasticizers and water reducers affect concrete strength?
- Since the heat of hydration of mass concrete goes down when the cement weight goes down, plasticizers can do this. Plasticizers and water reducers are chemical admixtures used to make concrete more workable. Unless the mixture is “starved” of water, increasing the w/c ratio reduces the concrete’s strength.
