High-Range Water Reducing Admixture, Based on Polycarboxylate

Strusin N520 is differentiated from conventional superplasticizers in that it is based on a unique carboxylic ether polymer with long lateral chains. This greatly improves cement dispersion. At the start of the mixing process electrocstatic dispersion occurs but the presence of the lateral chains, linked to the polymer backbone. Generate a steric hindrance which stabilizes the cement particle’s capacity to separate and disperse. This mechanism considerably reduces the water demand in flowable concrete.

Advantages

• Increased early and ultimate compressive strengths
• Increased flexural strength
• Improved adhesion to reinforcing and stressing steel
• Improved resistance to carbonation
• Lower permeability
• Increased resistance to aggressive atmospheric conditions
• Reduced shrinkage and creep
• Increased durability

Standards compliance

Strusin N520 conforms with BS 5075 Part 3 and with ASTM C494 as Type A and Type F, depending on dosage used.

Instructions for use

• Compatibility: Struplast N520 is compatible with other STRUMIX admixtures in the same concrete mix. All admixtures should be added to the concrete separately and must not be premixed together prior to addition. The performance of concrete containing more than one admixture should be assessed by trial mixes.
• Dispensing: The correct quantity of Struplast N520 should be measured by means of a recommended dispenser. The admixture should then be added to the concrete with the mixing water to obtain the best results.

Packaging & Storage

• Struplast N520 is available in 20 kg containers, 200 kg drums and 1100 kg IBC tank.
• Struplast N520 has a minimum shelf life of 12 months provided the temperature is kept within the range of 5°C to 35°C. Should the temperature of the product fall outside this range then contact STRUMIX for advice.
• Freezing point: Approximately -2°C

Health and safety

Struplast N520 does not fall into the hazard classifications of current regulations. However, it should not be swallowed or allowed to come into contact with skin and eyes. Suitable protective gloves and goggles should be worn. Splashes on the skin should be removed with water. In case of contact with eyes rinse immediately with plenty of water and seek medical advice. If swallowed seek medical attention immediately - do not induce vomiting.

Fire

Struplast N520 is non-flammable.