Chloride free accelerating, water reducing admixture


Uses

  • To accelerate the setting and early strength gain of Portland cement concrete and mortar mixes without the introduction of chloride.

  • Acts as a plasticiser, so gives significant increases in both ultimate and early strengths.

  • Typical applications include precast concrete, concrete placed in cold weather, concrete for repairs, mortars for brickwork.

ADVANTAGES

  • Chloride free, safe in prestressed and reinforced concrete.

  • Produces exceptionally high early strengths.

  • Plasticising action gives increased workability and I or increased strengths.

  • Early setting improves frost resistance.

  • Suitable for bricklaying mortar mixes.

  • Particularly effective in concrete at low temperatures.

Description

PLAST-CN 11 is guaranteed completely free of all forms of chloride and is supplied as a light straw coloured liquid.

The main active ingredient is an inorganic format.

Properties
Specific gravity : 1.260 -1.270 at 30°C Freezing point : -16°C Chloride content : Nil to BS 5075 Air entrainment : Less than 1%
Compatibility with cements:

May be used with all types of Portland cements. Not suitable for use with high alumina cement.

Acceleration:

The addition of PLAST-CN 11 to Portland cement concrete mixes accelerates both the setting and rate of strength gain. The strength improvements are most significant during the first 18 hours.

Long term effects:

Accelerated corrosion testing of steel in concrete has shown that PLAST-CN 11 does not affect the protection of steel afforded by cement against corrosion even at four times the normal dose level.

Application instructions
Dosage

The recommended dosage range for standard concrete and mortar mixes with all grades of Portland cement is 2.0 to 3.0 litres per 100 kg cement (see table).

Overdosing

An overdose of double the recommended amount of PLAST-CN 11will result in a slight increase in initial acceleration, but will not materially alter the ultimate strength or characteristics of the cured concrete or mortar.

Mix design

PLAST-CN 11 should be stirred before use.

Dispensing

The correct quantity of PLAST-CN 11 should be measured by means of a recommended dispenser.

The company's technical department should be consulted regarding suitable equipment and its installation.

PLAST-CN 11 should be added direct into the mixer. Best results are obtained when added at the same time as the mixing water.

Typical effect of Con PLASTNC on strength gain :

M-30 mix, Sand Zone 2 (40%), Coarse aggregate -20 -5mm ( 60%)
Cement: L&T OPC

Curing
Temperature

PLAST-CN 11 Dosage
Litres / 100kg

Initial set (BS 5075) hrs.

Final set (BS 5075) hrs.

 

 

 

 

50C

NIL

14

19

 

2.5

12

17

100C

NIL

4

06

 

2.5

3

200C

NIL

3

4

 

2.5

2

3

Precautions
Health and Safety instructions

PLAST-CN 11 is toxic. Do not ingest. If ingested, give an emetic of common salt in water and seek immediate medical attention. Prolonged contact with skin should be avoided. Any splashes should be washed well with water The use of rubber gloves and safety glasses is recommended. Any splashes on eyes should be flushed immediately with plenty of clean water and medical treatment sought.

Cleaning

Spillages of PLAST-CN 11 can be removed with water.

Packaging

Spillages of PLAST-CN 11 can be removed with water.

Packaging

PLAST-CN 11 is supplied in 200 Kgs. & 200 Kgs. drums.

Fire

PLAST-CN 11 is non flammable. But, should be stored away from combusitible materials.