Chemplast WPP1000
Concrete integral waterproofing admixture
Uses
As an integral waterproofer for:
Advantages
Description
Chemplast WPP 1000is a chloride free integral waterproofing
admixture and is supplied as a white powder. It is formulated
from a blend of hydrophobic materials; which together form
a matrix of insoluble, water resistant material within the
cement paste.
The plasticisers in Chemplast WPP 1000also improve the
effectiveness of water in the concrete and sand:cement mix,
enabling desired levels of workability to be obtained with
lower water contents. This produces a mix with a reduced
water:cement ratio and therefore reduced permeability.
Properties
Typical dosage
The optimum dosage of Chemplast WPP 1000to meet specific requirements should always be determined by trials using the materials and conditions that will be experienced in use.
This allows the optimisation of admixture dosage and mix design and provides a complete assessment of the mix. As a guide, an addition rate of 1.3% – 2% by weight of cement.
Use at other dosages
Dosages other than those given on this sheet may be used to meet particular mix requirements provided that adequate supervision is available. Compliance with requirements must be assessed through trial mixes. Contact the our local representative for any further advice.
Instructions for use
Compatibility
Chemplast WPP 1000is compatible with other admixtures used in the same concrete mix. All admixtures should be added to the mix separately and must not be mixed together prior to addition. The resultant properties of mixes containing more than one admixture should be assessed by the trial mix procedure recommended on this data sheet.
Chemplast WPP 1000is suitable for use with all types of Portland cements and cement replacement materials such as PFA, GGBFS and microsilica.
Dispensing
The correct quantity of Chemplast WPP 1000should be measured by means of a suitably accurate device; and then added to the concrete during the mixing process either by hand, or mechanically. Contact the our Technical Service Department for advice regarding suitable equipment and its installation.
Effects of overdosing
An overdose of double the intended dose of Chemplast WP 1000 may result in increased retardation and workability.
Curing
As with all structural concrete and sand:cement mixes, good curing practice should be maintained, particularly in situations where an overdose has occurred. Water spray, wet hessian or a Concure*† spray applied curing membrane should be used.
Limitations
The use of Chemplast WPP 1000will not make poor quality
concrete waterproof. Good concrete practice must be followed at all times. Well graded aggregates must be used and a minimum cement content of 300kg/m³ is usually
recommended. Adequate waterstops must be provided
between lifts of concrete and floor bays.
Estimating
Storage
When stored in warehouse conditions below 350C, chemplast WPP1000 will have a shelf life of 12 months.
Precautions
Health and safety
Chemplast WPP 1000is mildly alkaline and should not be
swallowed or allowed to come into contact with skin and
eyes.
Wear suitable protective gloves and goggles. In case of contact with the skin, wash immediately with soap and 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 Safety Data Sheet available for this product.
Fire
Chemplast WPP 1000is an inert, non-flammable material.
Cleaning and disposal
Spillages of Chemplast WPP 1000should be removed by 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.
