Chemrite – NN
Chemrite - NN
High Range Water-Reducing, Accelerating Concrete Admixture
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Product Description Chemrite-NN is a liquid superplasticizer for production of free
flowing concrete, acting as a substantial water-reducing agent for
promoting high early and ultimate strengths.
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Uses Chemrite-NN is used as a super plasticizer in the production of
free flowing concrete, such as
-- R.C. slabs, raft, footings.
-- Walls, columns and piers
-- Pre-cast and prestressed concrete elements
-- Bridges decks
-- Concrete where formwork must be removed quickly or
early loading can be applied
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Advantages Chemrite-NN exhibits the following properties:
-- Workability enhanced at reduced water/cement ratio.
-- Increased placeability in slender components with densely
packed reinforcement.
-- Normal set without retardation.
-- Significantly reduces the risk of segregation & bleeding
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Test Standards Chemrite-NN complies with ASTM C-494, Type A & F.
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Product Data
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Type Polynapthalene based concrete admixture.
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Form Brown liquid
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Packaging 200 lit drums and 1000 lit flow bins; bulk supply in tanker trucks
is possible on demand.
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Storage Condition Store in a dry area between 5°C and 35°C. Protect from direct
sunlight.
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Shelf Life 12 months minimum from production date if stored properly in
original unopened packaging
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Chemrite – NN
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Technical Data
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Density at 25°C 1.18 + 0.01 Kg/lit.
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pH value Approximately 8
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Chloride Content Nil (EN 934-2)
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Application Detail
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Dosage 0.8 – 2.0 % by weight of cement. Trial mixes are recommended
to establish exact dosage rates
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Dispensing Chemrite-NN can be added to the mixing water prior to its
addition to the concrete mixer.
Chemrite-NN can also be added to the concrete immediately
prior to discharge and further mixing has taken place for at least
three more minutes.
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Concrete Placing The standard rules of good concreting practice (production as
well as placing) must be observed when using Chemrite-NN
concrete
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Curing Fresh concrete must be cured properly, especially at high
temperatures in order to prevent plastic and drying shrinkage.
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Compatibility Chemrite-NN is compatible with Silica Fume and sulphate
resistant cement. Consult our Technical Services Department for
further guidance.
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Remarks When accidental overdosing occurs, concrete set is adversely
affected. During this period the concrete must be kept moist in
order to prevent premature drying out.
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Safety
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Toxicity Non-toxic.
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Transportation Non – hazardous.
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