Sika Plastomix-250 KH

SIKA PLASTOMIX-250 KH – MID-RANGE WATER REDUCING CONCRETE ADMIXTURE

DESCRIPTION

Sika® Plastomix-250 KH is a game-changing admixture formulated to enhance your concrete mix with its mid-range reducing effect. This concentrated solution is based on synthetic polymers and carefully selected additives, making it a must-have for construction projects where cost-effectiveness, increased workability, and cement savings are crucial. It’s particularly suited for concrete mixes that incorporate cement replacements such as PFA (fly ash) or GGBFS (slag).

APPLICATION

Cost-Effective Concrete Advantages

• Are you looking for a way to make your concrete more cost-effective? Sika® Plastomix-250 KH is your answer. It’s perfect for projects where the budget is tight, helping you achieve superior results without breaking the bank.

Workability Enhanced

• A concrete mix with enhanced workability is a builder’s dream. Sika® Plastomix-250 KH boosts workability and placeability, making your job easier and more efficient.

Cement Savings with Strength Intact

• When you want to save on cement without compromising on strength, Sika® Plastomix-250 KH is your go-to solution. It allows you to maintain equal strengths compared to a control mix with less cement, saving both money and resources.

Slow Early Strength Gain Compensated

• If you’re working with cement replacements like PFA or GGBFS and facing slow early strength gain, Sika® Plastomix-250 KH comes to the rescue. It effectively compensates for this challenge, ensuring your project stays on track.

ADVANTAGES

• Water reduction up to 15% compared to control mix.
• Improved utilization of cement, reducing costs.
• Enhanced watertightness for better durability.
• Equal strengths to control mix with less cement, promoting sustainability.
• Improved final strength, delivering long-lasting results.
• Compensates for slow early strength gain achieved by cement replacements like PFA and GGBFS.
• Increased workability and longer slump retention for smoother construction processes.

PRODUCT INFORMATION

• Packaging: Available in 200 L and 1,000 L containers.
• Appearance/Color: Brown Liquid
• Shelf Life: 12 months from the date of production when stored properly in undamaged, original, sealed packaging.
• Storage Conditions: Store in dry and cool conditions, protected from direct sunlight, at temperatures between 5°C and 40°C.
• Specific Gravity: 1.166 – 1.180 kg/L
• pH-Value: 7 – 10 (Approx.)

TECHNICAL SPECIFICATIONS

Let’s dive into the technical specifics of Sika® Plastomix-250 KH:

Property	Specification
Water Reduction	Up to 15%
Shelf Life	12 months
Specific Gravity	1.166 – 1.180 kg/L
pH-Value	7 – 10 (Approx.)
Dosage	0.2 – 0.6L per 100kg of cement

CONSTRUCTION INSTRUCTIONS

Preparation and Safety Measures:

• Before you begin, ensure that you have all the necessary safety equipment, including gloves, safety glasses, and protective clothing. Read and follow all safety instructions provided in the product’s Safety Data Sheet. Additionally, check the weather conditions to ensure they are suitable for concrete work.

Materials and Equipment:

• Gather all the materials and equipment required for your concrete mix, including cement, aggregates, water, and Sika® Plastomix-250 KH. Ensure that all materials are of the highest quality and that they meet your project’s specifications.

Determine the Required Dosage:

• Calculate the required dosage of Sika® Plastomix-250 KH based on the volume of cement you plan to use. As a general guideline, the recommended dosage is 0.2 – 0.6 liters of Sika® Plastomix-250 KH per 100 kg of cement. Adjust this dosage according to your specific project requirements.

Mixing Sika® Plastomix-250 KH:

• Prior to mixing, ensure that the product is in good condition and that its packaging is undamaged.
• Measure the correct amount of Sika® Plastomix-250 KH based on the calculated dosage for your mix.

Concrete Plant Preparation:

• Set up your concrete batching plant and ensure it is in good working condition.
• Position an automatic dispenser in the water line of your batching plant to add Sika® Plastomix-250 KH accurately. Make sure the dispenser is clean and well-maintained.

Dispensing Sika® Plastomix-250 KH:

• As the concrete mixing process begins, start the automatic dispenser, adding Sika® Plastomix-250 KH to the water used in the mix.
• It is crucial to ensure that the addition of the admixture is evenly distributed throughout the mix. This will guarantee consistent performance.

Mixing Concrete:

• Continue with the concrete mixing process as you normally would. Ensure thorough and consistent mixing to achieve a homogeneous mixture.

Placing and Finishing Concrete:

• Once the concrete mix is ready, place it into the desired formwork or molds.
• During the placement process, make sure the concrete is evenly distributed and compacted to prevent voids and ensure structural integrity.
• Finish the surface according to your project requirements, such as troweling or smoothing.

Curing and Protection:

• After placing and finishing the concrete, implement proper curing methods, which may include covering the surface with wet burlap, plastic sheets, or applying curing compounds.
• Protect the freshly placed concrete from adverse weather conditions and direct sunlight to allow for gradual curing and prevent cracks.

Quality Control:

• Throughout the construction process, conduct quality control checks to ensure that the concrete meets the specified requirements for strength, durability, and other performance criteria.

Clean-Up and Disposal:

• After completing your project, clean all equipment and dispose of waste materials in compliance with local environmental regulations.

Record Keeping:

• Maintain records of the concrete mix design, admixture dosage, and any other relevant information for future reference and quality assurance.

By following these detailed construction instructions, you can successfully incorporate Sika® Plastomix-250 KH into your concrete mix, benefiting from its cost-effectiveness, improved workability, and enhanced durability. Remember to adapt the instructions to the specific requirements of your project and always adhere to local regulations and safety guidelines for construction work. Your well-executed concrete project will reflect the quality and performance that Sika® Plastomix-250 KH brings to the table.