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How does Welan gum enhance the properties of concrete?

Views: 0     Author: Unionchem     Publish Time: 2024-03-07      Origin:

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Concrete is a versatile and widely used construction material, known for its strength and durability. However, in order to enhance its properties and performance, various additives and thickeners are often used. One such additive that has gained popularity in the construction industry is Welan gum.

Welan gum is a biopolymer produced by the bacterium Alcaligenes faecalis. It is a high molecular weight polysaccharide that offers unique rheological properties, making it an ideal choice for improving the performance of concrete.

So, how does Welan gum enhance the properties of concrete? Let's delve into the details.

Improved Workability

One of the key benefits of using Welan gum in concrete is its ability to improve workability. When added to the concrete mix, Welan gum acts as a rheology modifier, enhancing the flow and pumpability of the concrete. This results in easier placement and compaction of the concrete, making it an attractive choice for construction projects where workability is crucial.

Enhanced Strength and Durability

In addition to improving workability, Welan gum also contributes to the overall strength and durability of concrete. By effectively dispersing cement particles and reducing water segregation, Welan gum helps in achieving a more uniform and dense concrete matrix. This leads to improved compressive strength, reduced permeability, and enhanced resistance to cracking, ultimately resulting in a longer-lasting and more robust concrete structure.

Reduced Permeability

Permeability is a critical factor in determining the durability of concrete, especially in harsh environmental conditions. Welan gum plays a vital role in reducing the permeability of concrete by improving the particle packing and reducing the size and distribution of capillary pores. This not only enhances the resistance of concrete to aggressive agents such as water, chloride ions, and sulfates but also minimizes the risk of corrosion of embedded steel reinforcement.

Compatibility with Admixtures

Another advantage of using Welan gum in concrete is its compatibility with a wide range of chemical admixtures. Whether it's air-entraining agents, superplasticizers, or set-retarding additives, Welan gum exhibits excellent compatibility, allowing for greater flexibility in concrete mix design. This versatility makes it easier for concrete producers to tailor the mix to meet specific project requirements without compromising on performance.


As sustainability continues to be a driving force in the construction industry, the use of environmentally friendly materials and additives has become increasingly important. Welan gum aligns with this trend as it is a naturally derived biopolymer, offering an eco-friendly alternative to synthetic thickeners. Its production process involves fermentation using renewable raw materials, making it a sustainable choice for enhancing the properties of concrete.

Application Flexibility

Whether it's for high-performance concrete, self-consolidating concrete, or even shotcrete, Welan gum offers versatility in its application. Its ability to improve rheological properties makes it suitable for a wide range of concrete mixes, allowing for greater flexibility in design and construction practices.

At Unionchem, we understand the importance of high-quality thickeners in the construction industry. Our Welan gum product is meticulously manufactured to meet the stringent requirements of the concrete market. With our commitment to excellence and innovation, we aim to provide our customers with a reliable and effective solution for enhancing the properties of concrete.

As a leading chemical thickener supplier, we take pride in offering a comprehensive range of products including Xanthan Gum, Gellan Gum, and more. Our thickeners are suitable for various applications within the construction sector, and we are dedicated to assisting our customers in achieving optimal results in their projects.

In conclusion, Welan gum stands out as a valuable additive for improving the properties of concrete. Its ability to enhance workability, strength, durability, and sustainability makes it a compelling choice for construction professionals seeking to optimize the performance of their concrete mixes. With its proven track record and versatile applications, Welan gum continues to play a significant role in advancing the standards of modern concrete construction.

If you are looking for high-quality thickeners to elevate your construction projects, do not hesitate to contact us at Unionchem. Our team of experts is ready to assist you in finding the ideal solution for your specific needs. Let's work together to build a stronger and more resilient future with advanced concrete technology.