Superplasticizer admixture
polycarboxylate ether based superplasticizers in concrete admixtures can be used in the construction of concrete and mortar. It is used for defense, railway, metallurgy, coal, hydropower and other department of underground engineering and tunnel engineering, rock excavation and mining the seams of the lining. Compared with ordinary concrete pouring, can speed up the construction speed and reduce the cost of the project.
Keywords:
- Concrete water reducer
- high range water reducer
- polycarboxylates high range water reducer
- concrete water reducer plasticizer
- polycarboxylate superplasticizer
- polycarboxylate ether price
Superplasticizer admixture Specification
- Superplasticizer admixture, also known as high-range water reducer (HRWR) or high-performance water reducer (HPWR), is a type of chemical additive used in concrete mixes to improve their workability and reduce the amount of water needed for proper consistency. It is commonly utilized in construction projects where high strength, flowability, and pumpability of concrete are required.
- The main function of superplasticizer admixture is to disperse cement particles more effectively and reduce the viscosity of the concrete mixture. This allows for better flow, easier placement, and compaction of concrete, resulting in improved overall performance. Superplasticizers are typically used in combination with normal water reducers to achieve the desired consistency and properties.
| Test items | Test result |
| Appearance（25℃） | White to light yellow powder |
| PH value（5% aqueous solution） | 4~7 |
| Solid content（%） | ≥97 |
| Bulk density（g/l） | 300~600 |
| Water reducing rate（%） | ≥25 |
| Chloride ion content（%） | ≤0.6 |
Details Images of Superplasticizer admixture
Here are some key points about superplasticizer admixture:
- Water Reduction: Superplasticizers can significantly reduce the water-cement ratio in concrete, leading to increased strength and durability. This reduction in water content does not compromise the workability of the concrete.
- Improved Workability: The addition of superplasticizer admixture improves the flowability, pumpability, and segregation resistance of concrete. This allows for easier placement and finishing, especially in congested reinforcement areas.
- Higher Strength Development: Superplasticizers can enhance the early-age and ultimate compressive strength of concrete. This property is particularly advantageous when fast construction schedules or high-strength requirements are involved.
- Compatibility: Superplasticizers are compatible with various cement types and other concrete admixtures, such as air-entraining agents, accelerators, and retarders. They can be used in a wide range of concrete applications, including ready-mix concrete, precast elements, and self-compacting concrete.
- Dosage Control: Proper dosage control is vital when using superplasticizer admixtures. The correct dosage depends on factors such as cement type, desired workability, ambient conditions, and project specifications. It is crucial to follow the manufacturer’s recommendations and conduct trials to determine the optimum dosage.
- Modifying Setting Time: Depending on the type of superplasticizer admixture used, it can modify the setting time of concrete. For instance, certain admixtures can accelerate or delay the initial and final setting times, allowing flexibility in project requirements.
- Environmental Considerations: Superplasticizers are available in different formulations, including both traditional and polycarboxylate ether-based (PCE-based) types. PCE-based superplasticizers are known for their high efficiency, low dosage requirements, and environmental friendliness.
Application of Superplasticizer admixture
Superplasticizer admixture finds wide application in various concrete construction projects. Here are some common applications:
Ready-Mix Concrete: Superplasticizers are commonly used in the production of ready-mix concrete. They improve the workability and pumpability of the concrete, making it easier to transport and place at the construction site.
Precast Concrete: Precast concrete elements, such as beams, columns, and panels, often require a high level of workability to ensure proper mold filling and compaction. Superplasticizers aid in achieving the required flowability, enabling the production of high-quality precast elements.
Self-Compacting Concrete (SCC): SCC is a highly flowable and self-leveling concrete that does not require vibration during placement. Superplasticizers play a crucial role in producing SCC by providing excellent workability, ensuring that the concrete can flow and fill complex formworks or densely reinforced areas.
High-Strength Concrete: Superplasticizers are widely used in the production of high-strength concrete, which typically requires lower water-cement ratios to achieve the desired strength. By reducing the water content while maintaining proper workability, superplasticizers contribute to the development of high-strength concrete with superior durability.
Foundation and Slab Construction: Superplasticizers are often employed in projects involving large concrete foundations, such as bridges, dams, and industrial structures. They improve the workability and flow of concrete, facilitating proper consolidation and preventing issues such as honeycombing and voids.
Overlays and Repair Mortars: Superplasticizers are used in the production of concrete overlays and repair mortars to improve the bond strength, workability, and surface finish. These admixtures help achieve a smoother finish, enhance adhesion to existing concrete surfaces, and minimize the risk of cracking.
It is important to note that the specific dosage and type of superplasticizer admixture can vary depending on the project requirements and concrete mix design. Consulting with concrete experts or engineers is essential to determine the most suitable superplasticizer and its appropriate application for a specific project.
Precautions for use of Superplasticizer admixture
Polycarboxylate ether-based superplasticizers are commonly used in concrete admixtures to produce high-performance concrete with enhanced strength and flowability. These superplasticizers have excellent dispersing properties that allow for better particle suspension, resulting in improved workability and reduced water content.
The dosage of polycarboxylate ether water reducer is determined through trial mixing, where different dosages are tested to achieve the desired concrete mix characteristics. Factors such as cement type, aggregate properties, ambient conditions, and project requirements influence the optimal dosage. These trials help fine-tune the dosage to achieve the desired performance.
Polycarboxylate ether-based superplasticizers can be dosed either with water or after the addition of water to the concrete mix. However, research has shown that they are more effective when added after the addition of water. This is because the water initially hydrates the cement particles and allows for better dispersion of the superplasticizer, maximizing its effectiveness in reducing viscosity and improving workability.
Packing and shipping of Concrete water reducer
- Packaging: The concrete water reducer is typically packaged in 25kg lining plastic bags. This packaging ensures the proper containment and protection of the product during transportation and storage.
- Storage: The concrete water reducer is classified as nonhazardous. It should be stored in a cool and ventilated place to maintain its quality and effectiveness. This helps prevent exposure to excessive heat, direct sunlight, and moisture, which can potentially degrade the product.
- Delivery: The delivery time for the concrete water reducer is within 15 working days. This timeframe specifies the estimated duration from the order placement to the completion of the product delivery.
- Shipment:FOB,CFR,CIF, By sea
Recommended Products
As one of the well-known polycarboxylate ether manufacturers in China, Dongke offers a wide range of products including polycarboxylate ether monomers, liquid solutions, powder forms, and even sheet products. With our expertise in the field, we are capable of providing formulation support to customers who are interested in purchasing our products and require assistance in their applications.
Dongke provides a one-stop solution
- As a professional polycarboxylate ether manufacturers, Dongke offers a comprehensive range of products in addition to the production of Polycarboxylate Superplasticizer Monomer, PCE Mother Liquid, Polycarboxylate Superplasticizer Powder, and Polycarboxylate Superplasticizer Flakes.
- One of our offerings includes the Polycarboxylate Superplasticizer Machine, which is specifically designed for the production and processing of Polycarboxylate Superplasticizer. This machine ensures efficient and precise manufacturing processes, allowing for the production of high-quality Polycarboxylate Superplasticizer products.
- We understand the importance of providing a complete solution for our customers in the construction industry. Therefore, in addition to raw materials such as Polycarboxylate Superplasticizer Monomer, PCE Mother Liquid, Polycarboxylate Superplasticizer Powder, and Polycarboxylate Superplasticizer Flakes, we also offer the necessary equipment, like the Polycarboxylate Superplasticizer Machine, to support the production and application of Polycarboxylate Superplasticizer.
- Please feel free to reach out to us for more information or specific inquiries regarding our products and services. We are dedicated to providing you with reliable and innovative solutions for your water reducing needs in the construction industry.
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