High performance water reducing admixture


ADVANTAGES

SIGMACEME’S CEM – AID PLAST is a unique formulation based old on Polymers to be used as a bonding Agent between any cement based products. It is an excellent polymeric solution which strengthens the bond between old and new concrete.

  • Allows specified strength grades to be met at reduced cement content or increased workability.

  • Water reduction significantly improves compressive strength at all ages and enhances durability though the production of low permeability concrete.

  • Minimises the risk of segregation and bleeding and assists in the production of a dense, close textured surface, improving durability.

  • Chloride free, safe for use in prestresses and reinforced concrete.

  • Allows workability to be increased without adding extra water.

Description

PLAST-M 505 is a chloride free and water reducing admixture based on selected sugar – reduced lignosulphonate materials. It is supplied as a brown solution which instantly disperses in water. PLAST-M 505 disperses the fine particles in the concrete mix, enabling the water content of the concrete to perform more effectively and improving the consistency of the concrete. This produces higher levels of workability for the same water content, allowing benefits such as water reduction and increased strengths.


Dosage

PLAST-M 505 is a chloride free and water reducing admixture based on selected sugar – reduced lignosulphonate materials. It is supplied as a brown solution which instantly disperses in water. PLAST-M 505 disperses the fine particles in the concrete mix, enabling the water content of the concrete to perform more effectively and improving the consistency of the concrete. This produces higher levels of workability for the same water content, allowing benefits such as water reduction and increased strengths.


Use at other dosages

Dosages outside the normal range quoted above can be used to met particular mix requirements. Contact Sigmacheme for advice in these cases.

Use at other dosages
Appearance : Brown liquid
Specific gravity : 1.180 – 1.200 at 270C
Chloride content : Nil to IS : 456
Air entrainment : Typically less than 1% additional air is entrained at normal dosages.
Application Instructions
Compatibility

PLAST-M 505 is compatible with other Sigmacheme admixtures used in the same concrete mix. All admixtures should be added to the concrete separately and must not be mixed together prior to addition. The performance of concrete containing more than one admixture should be assessed by trial mixes. PLAST-M 505 is suitable for use with all types of ordinary portland cements and cement replacement materials such as PFA, GGBFS and microsilica.

Dispensing

The correct quantity of PLAST-M 505 should be measured by means of a recommended dispenser. The admixture should then be added to the concrete with the mixer water to obtain the best results. Sigmacheme shall be contacted for advice regarding suitable equipment and its installation.

Effects of overdosing

An overdose of double the intended amount of PLAST-M 505 will result in a significant increase in retardation as compared to that normally obtained at the intended dosage. Provided that adequate curing is maintained, the ultimate strength of the concrete will not be impaired by increased retardation and will generally be increased. The effects of overdosing will be further increased if sulphate resisting cement or cement replacement materials are used. Overdosage may also cause increased air entrainment, which will tend to reduce strength. The degree of this effect will depend on the particular mix design and overdose level.

ESTIMATING
Packaging

PLAST-M 505 is available in 20, 200 litre 250 Kg. containers.

Dispensing

The correct quantity of PLAST-M 505 should be measured by means of a recommended dispenser. The admixture should then be added to the concrete with the mixer water to obtain the best results. Sigmacheme shall be contacted for advice regarding suitable equipment and its installation.

Storage

PLAST-M 505 has a minimum shelf life of 12 months provided the temperature is kept within the range of 20C to 500C. should the temperature of the product fall outside this range then contact Sigmacheme office for advice. Freezing point: Approximately – 3 °C

PRECAUTIONS
Health and Safety

PLAST-M 505 does not fall into the hazard class 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. For further information consult the Material Safety Data sheet available for this product.

Fire

PLAST-M 505 is water based and noninflammable.

Storage

PLAST-M 505 has a minimum shelf life of 12 months provided the temperature is kept within the range of 20C to 500C. should the temperature of the product fall outside this range then contact Sigmacheme office for advice. Freezing point: Approximately – 3 °C

Cleaning and disposal

Spillages of PLAST-M 505 should be absorbed onto sand, earth or vermiculite and transferred to suitable containers. Remnants should be hosed down with large quantities of water. The disposal of excess or waste material should be carried out in accordance with local legislation under the guidance of the local waste regulatory authority.