Fosroc Conplast SP495 constructive solutions

Superior high range water reducer for high quality

rheoplastic concrete and hydration control

Uses for use with fresh and hardened concrete.

„ Specifically developed for use in high quality concrete for

Typical Properties
workability retention at low water content.
„ Specially formulated for concrete with supplementary Appearance : Brown liquid
cementitious materials like GGBS, Microsilica, Fly ash. Specific gravity : 1.20 at 25°C
„ Provides good pumpable concrete Chloride content : Nil to BS 5075 / BS:EN934
Air entrainment : Less than 2% additional air
„ Recommended for piling and mass concrete pours with
is entrained at normal
improved cohesion and temperature control.
dosages.

Advantages
Instructions for use
„ High range water reducing property allows the production
Mix design
of high quality concrete without excessive cement
contents - ensures improved durability. Where the main requirement is to improve strengths, initial
trials should be made with normal concrete mix designs.
„ Acts as a highly effective hydration control admixture
The addition of the admixture will allow the removal of water
especially in blended concrete.
from the mix whilst maintaining workability. After initial trials,
„ Higher workability levels are maintained for longer than minor modifications to the overall mix design may be made
with sulphonated melamine and napthalene admixtures. to optimise performance.
„ Better rheological properties for concrete made with
Compatibility
double or triple blends without abnormal retardation.
„ Improved cohesion and particle dispersion minimises Conplast SP495 is compatible with other Fosroc admixtures
segregation and bleeding and improves pumpability. used in the same concrete mix. All admixtures should be
added to the concrete separately and must not be mixed
„ Chloride free, safe for use in precast, prestressed and
together prior to addition. The resultant properties of concrete
reinforced concrete.
containing more than one admixture should be assessed by
trial mixes.
Standards compliance
Conplast SP495 is suitable for use with all types of Portland
Conplast SP495 conforms with BS 5075, BS:EN 934-2 and
cements and cement replacement materials such as PFA,
with ASTM C494 as Type F & G depending on dosage used
GGBFS and microsilica.
and ASTM C1017 as Type 1 & Type 2 depending on dosage
used. 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
Description
times.
Conplast SP495 is a chloride free, superplasticising
Dispensing
admixture based on selected polymer modified napthalene
sulphonate dispersives. The correct quantity of Conplast SP495 should be measured
by means of a recommended dispenser. Normally, the
Conplast SP495 disperses by electro kinetic action in the
admixture should then be added to the concrete with the
concrete mix, enabling the water phase of the concrete to
mixing water to obtain the best results. Conplast SP495 is
perform more effectively.
not recommended to be added in dry aggregates or cement.
It should always be added in wet mix conditions. Full
Technical support
blending of the admixture and the concrete should be ensured
Fosroc provides a technical advisory service for on-site by mixing at high speed for a period of at least two minutes.
Conplast SP495

assistance and advice on admixture selection, evaluation

Contact Fosroc for advice regarding suitable equipment and
trials and dispensing equipment. Technical data and
its installation.
guidance can be provided for admixtures and other products
Fosroc Conplast SP495

Typical dosage Estimating

The optimum dosage of Conplast SP495 to meet specific Supply

requirements should always be determined by trial mixes Conplast SP495
using the materials and conditions that will be experienced in 210 litre drum, 1000 litre totes or bulk
use.
For larger users, storage tanks can be supplied.
For normal concrete a dosage between 0.75% to 1.5% by
weight of cement may be used, and for high strength concrete, Storage
dosage between 1.5% to 3.0% by weight of cement may be
Conplast SP495 should be re-circulated once a day for 10
used.
minutes and has a minimum shelf life of 12 months provided
Use at other dosages the temperature is kept within the range of 2°C to 50°C.
Should the temperature of the product fall outside this range
Dosages outside the typical ranges quoted above can be
contact Fosroc for advice.
used to meet particular requirements, contact Fosroc for
advice. Freezing point: Approximately -2°C

Effects of overdosing
Precautions
An overdose of double the amount of Conplast SP495 will
Health and safety
result in an increase in retardation. Provided that adequate
curing is maintained, the ultimate strength of the concrete will Conplast SP495 does not fall into the hazard classifications
not be impaired by increased retardation and will generally of current regulations (see notes 1 and 2 below). However, it
be increased. The effects of overdosing will be further should not be swallowed or allowed to come into contact
increased if sulphate resisting cement or cement replacement with skin and eyes.
materials are used.
Suitable protective gloves and goggles should be worn.
Overdosage may also cause increased air entrainment, which
Splashes on the skin should be removed with water. In case
will tend to reduce strength. The degree of this effect will
of contact with eyes, rinse immediately with plenty of water
depend on the particular mix design and overdose level.
and seek medical advice. If swallowed seek medical attention
Cleaning and disposal immediately - do not induce vomiting.
Spillages of Conplast SP495 should be absorbed onto sand, For further information consult the Material Safety Data Sheet
earth or vermiculite and transferred to suitable containers. available for this product.
Remnants should be hosed down with large quantities of
Fire
water.
Conplast SP495 is water based and non-flammable.
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.

* Denotes the trademark of Fosroc International Limited

†
See separate data sheet

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 Service. All Fosroc datasheets are updated on a regular basis. It is the user’s responsibility to
obtain the latest version.

Head Office
telephone: (+9714) 2039699 fax: (+9714) 2859649 email: agf@fosroc.com
Al Gurg Fosroc LLC
Regional offices
Post Box 657, Dubai Abu Dhabi, Al Gurg Fosroc telephone: 673 1779 fax: 673 1449 email: abudhabi@fosroc.com
United Arab Emirates Bahrain, YBA Kanoo telephone: 17738200 fax: 17732828 email: bahrain@fosroc.com
Kuwait, Boodai telephone: 4817618 fax: 4832124 email: kuwait@fosroc.com

www.fosroc.com
Oman, Al Amana telephone: 24815080 fax: 24817554 email: oman@fosroc.com
Qatar, Tadmur telephone: 4665501 fax: 4664147 email: qatar@fosroc.com

UAE/0503/10/D