Strusin N500

High-Range Water Reducing Admixture, Based on Polycarboxylate

Strusin N500 is a high performance hyper plasticizer intended for applications where increased early and ultimate compressive strengths are required, and it has been developed for use in:

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Uses

Self compacting concrete
Pumped concrete
High performance concrete
Per-cast 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 N500 conforms with BS 5075 Part 3 and with ASTM C494 as Type A and Type F, depending on dosage used.

Properties

Description

Strusin N500 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.

Typical dosage

The optimum dosage of Struplast N500 to meet specific requirements should always be determined by trial mixes using the materials and conditions that will be experienced in use. For normal concrete a dosage between 0.45% to 1.5% by weight of cement may be used.

Compatibility

Struplast N500 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. Struplast N500 is suitable for use with all types of Portland cements, SRC cements and cement replacement materials such as PFA, GGBFS and microsilica. The use of a combination of admixtures in the same concrete mix and or cement replacements may alter the setting time. Trials should always be conducted to determine such setting times.

Dispensing

The correct quantity of Struplast N500 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 N500 is available in 20 kg containers, 200 kg drums and 1100 kg IBC tank. Struplast N500 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 N500 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 N500 is non-flammable.