SikaRapid®-4
SikaRapid®-4 is a set accelerator for concrete and mortar containing added chloride.
- Can be used as an accelerator or in combination with a superplasticiser.
- Faster demoulding.
- Higher productivity.
Usage
SikaRapid®-4 is recommended for use in premix and precast concrete where accelerated setting times are required. As a result, SikaRapid®-4 allows:- Faster finishing of concrete surfaces.
- Improved early strength of premixed concrete.
- Rapid slip-form movement.
Advantages
- Can be used as an accelerator or in combination with a superplasticiser.
- Faster demoulding.
- Higher productivity.
Packaging
Bulk deliveries
1000 litre IBC
205 litre drum
10 litre container
Colour
Light brown liquid.
Product Details
APPROVALS / CERTIFICATES
SikaRapid®-4 meets and exceeds all requirements of Australian Standard 1478.1-2000 for Accelerator (Ac).
Shelf life
Stored at temperatures between 5°C and 35°C in unopened original containers protected from direct sunlight, shelf life is at least one (1) year.
Storage conditions
Store at temperature between 5°C and 35°C, protected from direct sunlight.
Specific Gravity
1.44 g/cm3
Total Chloride Ion Content
1000ml contains approximately 86g Chloride ions.
Application
Compatibility
SikaRapid®-4 can be used in conjunction with any non-retarded Sika plasticiser or superplasticiser. It is beneficial to add the SikaRapid®-4 with the initial mixing water before the addition of superplasticiser to enhance strength development. Tests must be carried out to determine the optimum combination.
Do not use SikaRapid®-4 in conjunction with shrinkage compensating admixtures.
Dispensing
SikaRapid®-4 is added to batching water or is poured into the concrete mix at the same time as the gauging water. SikaRapid®-4 may also be added into the premix truck on site. In this case, the concrete should then be mixed for an extra 1 minute for every cubic metre of concrete. The concrete should then be checked visually for uniform consistency before discharging.
Recommended Dosage
Dosage is 400ml - 2000ml/100 kg of total cementitious material. Exact dosage rate should be determined by site trials.