Struset Nitro

Chloride Free Accelerating Admixture

Struset Nitro is a chloride free accelerating admixture based on a combination of formate and nitrite salts. It is supplied as a straw coloured solution that instantly disperses in water. Struset Nitro accelerates the early stages of cement hydration, producing more rapid stiffening and allowing strength gain to commence at an earlier stage. This effect is particularly noticeable at low temperatures and is most significant in the first 24 hours after mixing.

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Uses

To accelerate the stiffening and early strength gain of Portland cement concrete and mortar
Typical applications include concrete or mortar placed in cold weather and precast concrete

Advantages

Particularly effective in assisting to offset the delaying effect of low temperatures on setting and strength gain
Accelerated setting gives added protection against early age frost attack
Also provides a degree of water reduction or increased workability
Suitable for use in bricklaying mortar
Chloride free, safe for use in reinforced concrete

Standards compliance

Struset Nitro complies with BS 5075 Part 1 and with ASTM C494 as type C and ISIRI 2930.

Properties

Appearance

Light green-yellow liquid

Specific gravity

1.07 ± 0.03 gr/cm3 at 20°C

Chloride

Nil to BS5075

Air entrainment

Typically less than 2% additional air is entrained at normal dosages.

Instructions for use

Compatibility: Struset Nitro is compatible with other STRUMIX admixtures in the same concrete mix. The admixtures must be added to the concrete separately with the mixing water and must not be directly mixed together prior to addition. The performance of concrete containing more than one admixture should be assessed by trial mixes to ensure the desired combination of effects is obtained.
Struset Nitro is suitable for use with ordinary Portland cement. Contact the STRUMIX Customer Service Department for advice on use with sulphate resisting cements and cement replacement materials.
Durability: Struset Nitro has no detrimental effect on the protection given to embedded steel by the alkalinity of cement and is safe for use as an accelerator in situations where chloride containing admixtures cannot be used.

Packaging & Storage

Struset Nitro is available in 20 kg containers, 200 kg drums and 1100 kg IBC tank.
Struset Nitro 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 -3°C

Health and safety

Struset Nitro 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

Struset RST is non-flammable.