Concrete Additive Admixture/Water Reducer/Dispersant Agent Sodium Lignosulphonate

Overview of Concrete Additive Admixture/Water Reducer/Dispersant Agent Sodium Lignosulphonate

Superplasticizers, also known as high-range water reducers, are a class of chemical admixtures used primarily in concrete and cement-based products. These admixtures significantly enhance the workability of fresh concrete by reducing the amount of water needed for a given level of fluidity or slump, without compromising the strength of the hardened concrete. By allowing less water content while maintaining flowability, superplasticizers enable the creation of high-performance concretes with improved durability and mechanical properties.

Features of Concrete Additive Admixture/Water Reducer/Dispersant Agent Sodium Lignosulphonate

1. Water Reduction: They can reduce the water requirement for a given concrete mix by up to 30%, resulting in a higher strength-to-water ratio.

2. Improved Flowability: Enhances the fluidity and pumpability of concrete, making it easier to place and compact, even in complex or heavily reinforced structures.

3. Early Strength Development: Despite lower water content, superplasticized concrete can achieve higher early strengths, facilitating faster construction cycles.

4. Reduced Segregation and Bleeding: By improving the cohesion of the concrete mixture, they minimize the risk of segregation and bleeding, leading to better-quality concrete.

5. Durable Concrete: The reduction in water content lowers porosity, which in turn increases resistance to frost, chloride ingress, and other forms of deterioration.

(Concrete Additive Admixture/Water Reducer/Dispersant Agent Sodium Lignosulphonate)

Parameters of Concrete Additive Admixture/Water Reducer/Dispersant Agent Sodium Lignosulphonate

The sodium lignosulphonate parameter (λ) refers to the strength of the lignosulphonate addition reaction between the agent and water. The general formula for this quantity is: λ = k × P / V Where: - λ: the strength of the addition reaction - k: the rate constant for the addition reaction - P: the concentration of the agent in water - V: the volume of the solution Here, k represents the rate constant for the addition reaction, which determines the rate at which the ligosulphonate adds its chemical ions to the water. P represents the concentration of the agent in water, which measures the amount of the agent that exists in the solution. It's important to note that different species of lignosulphonates have different proportions of their components. For example, some lignosulphonates can be prepared by reactsing it with a base such as magnesium or calcium oxide to form a nonpolar compound called water solubilant. Therefore, the proportion of the specific reactants needed for a particular reaction may vary depending on the chemical structure and reaction conditions of the substance being added.

(Concrete Additive Admixture/Water Reducer/Dispersant Agent Sodium Lignosulphonate)

Company Profile

Cie-China is a trusted global chemical material supplier & manufacturer with over 12-year-experience in providing super high-quality concrete additives and relatives products.

The company has a professional technical department and Quality Supervision Department, a well-equipped laboratory, and equipped with advanced testing equipment and after-sales customer service center.

If you are looking for high-quality concrete materials and relative products, please feel free to contact us or click on the needed products to send an inquiry.

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Shipment

It could be shipped by sea, by air, or by reveal ASAP as soon as repayment receipt.

Applications of Concrete Additive Admixture/Water Reducer/Dispersant Agent Sodium Lignosulphonate

High-Rise Buildings: Enables the production of self-compacting concrete for tall structures, reducing the need for vibration and improving construction efficiency.

1. Bridge Construction: Allows for the pouring of long spans without cold joints and enhances the durability of bridge decks.

2. Pre-stressed and Pre-cast Concrete: Improves the workability and finishability of concrete for precast elements, ensuring uniform quality and appearance.

3. Repair and Rehabilitation Works: Facilitates the injection of highly fluid repair mortars into cracks and cavities.

4. Shotcrete Applications: Enhances the sprayability of concrete in tunneling and mining operations.

FAQs of Concrete Additive Admixture/Water Reducer/Dispersant Agent Sodium Lignosulphonate

Q: How does a Concrete Additive Admixture/Water Reducer/Dispersant Agent Sodium Lignosulphonate differ from a normal plasticizer? A: While both plasticizers and superplasticizers are used to improve workability, superplasticizers offer a much greater reduction in water content and increase in flowability, enabling the production of high-strength and high-performance concretes.

Q: Is Concrete Additive Admixture/Water Reducer/Dispersant Agent Sodium Lignosulphonate compatible with all types of cement? A: Compatibility can vary. Some superplasticizers may interact differently with different types of cement, affecting setting time and strength development. It's essential to test the compatibility before use.

Q: Does using a Concrete Additive Admixture/Water Reducer/Dispersant Agent Sodium Lignosulphonate affect the setting time of concrete? A: Depending on the type and dosage, superplasticizers can either accelerate or retard the initial setting time of concrete. Adjustments can be made through admixture selection and dosage to achieve the desired setting characteristics.

Q: Is it possible to overdose on Concrete Additive Admixture/Water Reducer/Dispersant Agent Sodium Lignosulphonate? A: Yes, excessive use of superplasticizers can lead to problems such as over-slump, loss of stability, and surface bleeding. Proper dosing is critical to achieving optimal performance.

Q: How is Concrete Additive Admixture/Water Reducer/Dispersant Agent Sodium Lignosulphonate added to concrete? A: Concrete Additive Admixture/Water Reducer/Dispersant Agent Sodium Lignosulphonate is usually added to the concrete mix during the batching process, either directly or after being pre-diluted in water. The exact method and timing depend on the specific product and mixing equipment used.

(Concrete Additive Admixture/Water Reducer/Dispersant Agent Sodium Lignosulphonate)