Conplast SP430
High
performance
admixture
constructive solutions
superplasticising
Uses
Technical support
To provide excellent acceleration of strength again at
early ages and major increases in strength at all ages
by significantly reducing water demand in a concrete
mix.
Fosroc provides a technical advisory service for on-site
assistance and advice on mix design, admixture selection,
evaluation trials and dispensing equipment.
Particularly suitable for pre-cast concrete and other
high early strength requirements.
To significantly improve the workability of site mixed
and pre-cast concrete without increasing water
demand.
To provide improved durability by increasing ultimate
strengths and reducing concrete permeability.
Advantages
Major increases in strength at early ages without
increased cement contents are of particular benefit in
pre-cast concrete, allowing earlier stripping times.
Typical dosage
The optimum dosage of Conplast SP430 to meet specific
requirements should always be determined by trial mixes
using the materials and conditions that will be experienced
in use.
For high strength, water reduced concrete the normal
dosage range is from 0.7 to 2.0 litres per 100 kg of
cementitious material, including PFA, GGBFS and microsilica. For high workability concrete the normal dosage
range is from 0.7 to 1.3 litres per 100 kgs of cementitious
material.
Use at other dosages
Makes possible major reductions in water/cement ratio
which allow the production of high strength concrete
without excessive cement contents.
Dosages outside the typical ranges quoted above can be
used to meet particular requirements. Contact Fosroc for
advice.
Use in production of flowing concrete permits easier
construction with quicker placing and compaction and
reduced labour costs without increasing water content.
Properties
Increased workability levels are maintained for longer
than with ordinary sulphonated melamine admixtures.
Improved cohesion and particle dispersion minimises
segregation and bleeding and improves pumpability.
Chloride free, safe for use in pre-stressed and
reinforced concrete.
Appearance:
Specific gravity:
Chloride content:
Air entrainment:
Alkali content:
Standard compliance
Conplast SP430 complies with BS 5075 Part 3 and with
ASTM C494 as Type A and F depending on dosage used.
Conplast SP430 complies with the requirements of the
United Kingdom Water Fitting Byelaws Scheme and is listed
in the Directory of Materials as suitable for use in contact
with potable water under its previous name of Conplast
SP430.
Description
Conplast SP430 is a chloride free, superplasticising
admixture based on selected sulphonated naphthalene
polymers. It is supplied as a brown solution which instantly
disperses in water. Conplast SP430 disperses the fine
particles in the concrete mix, enabling the water content of
the concrete to perform more effectively. The very high
levels of water reduction possible allow major increases in
strength to be obtained.
Brown liquid
o
Typically 1.185 at 20 C
Nil to BS 5075
Typically less than 2% additional
air is entrained at normal
dosages.
Typically less than 72.0 g Na2O
equivalent/litre of admixture. A
fact sheet on this subject is
available.
Instructions for use
Mix design
Where the main requirement is to improve strength, initial
trials should be made with normal concrete mix designs.
The addition of the admixture will allow the removal of water
from the mix whilst maintaining workability. After initial
trials, minor modifications to the overall mix design may be
made to optimise performance.
Where the main requirement is to provide high workability
concrete, the mix design should be one suitable for use as a
pump mix. Advice on mix design for flowing concrete is
available from Fosroc.
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Conplast SP430
Compatibility
Storage
Conplast SP430 is compatible with other Fosroc 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 resultant properties of
concrete containing more than one admixture should be
assessed by trial mixes.
Conplast SP430 has a minimum shelf life of 12 months
provided the temperature is kept within the range of 2oC to
o
50 C. Should the temperature of the product fall outside
this range contact Fosroc for advice.
Freezing point:
Conplast SP430 is suitable for use with all types of ordinary
Portland cements and cement replacement materials such
as PFA, GGBFS and micro-silica.
o
Approximately -2 C
Precautions
Health and safety
Dispensing
Conplast SP430 does not fall into the hazard classifications
of current regulations see notes 1 and 2 below). However, it
should not be swallowed or allowed to come into contact
with skin and eyes.
The correct quantity of Conplast SP430 should be
measured by means of a recommended dispenser.
Normally, the admixture should then be added to the
concrete with the mixing water to obtain the best results.
Where high workability concrete is required from normal
workability concrete delivered to site. Conplast SP430 may
also be added to concrete direct into a ready-mix truck. Full
blending of the admixture and the concrete should be
ensured by mixing at high speed for a period of at least two
minutes.
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.
Contact Fosroc for advice regarding suitable equipment and
its installation.
For further information consult the Material Safety Data
Sheet available for this product.
Effects of overdosing
Fire
An overdose of double the amount of Conplast SP430 will
result in an increase in retardation as compared to that
normally obtained.
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.
Conplast SP430 is water based and non-flammable.
Over-dosage 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.
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.
Cleaning and disposal
Spillages of Conplast SP430 should be absorbed onto sand,
earth or vermiculite and transferred to suitable containers.
Remnants should be nosed down with large quantities of
water.
Estimating
Note: 1: CPL Regulations 1984 Supply - Schedule 1
Note 2 : HSE Publication Guidance Note EH40
Conplast SP430 is available in drum or bulk supply. For
larger users, storage tanks can be supplied.
Important note:
Fosroc products are guaranteed against defective materials and manufacture and are sold subject to its standard Conditions for the
Supply of Goods and Services, copies of which may be obtained on request. Whilst Fosroc endeavours to ensure that any advice,
recommendation, specification of information it may give is accurate and correct, it cannot, because it has no direct or continuous
control over where or how its products are applied, accept any liability either directly or indirectly arising from the use of its products,
whether or not in accordance with any advice, specification, recommendation of information given by it.
Fosam Company Limited
Head Office
Post Box 11081
Jeddah 21453
Saudi Arabia
www.fosroc.com
Telephone: +966 2 637 5345
Fax: +966 2 637 5891
email: fosam@fosroc.com
Regional Offices
Jeddah Sales Office
Jeddah Showroom
Riyadh
Dammam
Khamis Mushayt
Tel: (02) 608 0999
Tel: (02) 665 0187
Tel: (01) 482 9303
Tel: (03) 814 1282
Tel: (07) 250 0469
Fax: (02) 635 3330
Fax: (02) 667 4844
Fax: (01) 482 7562
Fax: (03) 814 1581
Fax: (07) 250 0469
Yanbu
Makkah
Medinah
Jubail
Tel: (04) 322 4280
Tel: (02) 542 0869
Tel: (04) 845 1767
Tel: (03) 362 3904
Fax: (04) 391 2980
Fax: (02) 542 0869
Fax: (04) 846 3195
Fax: (03) 362 3875
Registered Office: Industrial Area, Phase 4, Road No. 414, Street No. 407
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