KingMix 300SP®
High range water reducing admixture for workability-retaining superplasticised concrete.
SpecWorld has the Spec Pack, CSI specification and drawings for registered specifiers.
Overview
KingMix 300SP is a ready-to-use liquid high range water reducing admixture, designed to produce high-slump concrete that keeps its workability. KingMix 300SP is chloride-free.
Where to use
- Concrete where delayed setting and extended workability are required.
- Mass concrete pours.
- Ready-mixed concrete.
- Concrete transported over long distances.
- Pumped concrete.
- Concreting in hot weather.
Why use it
- Superplasticising effect in high-slump concrete.
- Large reduction in water demand at equal slump.
- Better workability than untreated concrete at the same water content.
- Excellent slump retention.
- Less cracking.
- Lower permeability.
- Greater durability.
- Higher compressive and flexural strengths.
Technical properties
| Colour | Brown liquid |
|---|---|
| Density | 1.18 ± 0.02 g/cm³ |
| Freezing point | ≈ -2°C |
| Chloride content (BS 5075) | Nil |
| Air entrainment | Typically less than 1% additional air above the control mix at normal dosages |
Standards and approvals
KingMix 300SP meets the requirements of ASTM C494 Types D and G, and of BS 5075, for high range water reducing admixtures.
How to use
Method of use
Dosage
KingMix 300SP is used at 0.5 - 1.5 litre/100 kg of cement. Other dosages may be used to suit the working conditions on site.
Dispensing
KingMix 300SP is added to the mixer together with the mixing water. The plasticising effect and the water reduction are greater when it is added to the damp concrete after 50 - 70% of the water. Adding it to dry aggregate or cement is not recommended, as this reduces the plasticising effect and the water reduction.
Setting time
The setting time depends on the chemical and physical make-up of the concrete ingredients and on the climate. Carry out trial mixes with the job materials to find the dosage that gives the specified setting time and strength.
Coverage, packaging and storage
Packaging
KingMix 300SP is available in 200 litre drums and in bulk.
Storage
Shelf life is at least 2 years in tightly closed original containers. Store at temperatures between +5°C and +50°C. If the product has been frozen, consult KingKrete's Technical Services Department before use.
Health and safety
KingMix 300SP contains no hazardous substances requiring labelling. For further information, refer to the Safety Data Sheet.