SikaRapid®-1
HARDENING ACCELERATING ADMIXTURE
SikaRapid®-1 is a non-chloride hardening accelerator formulated to increase the early strength of concrete without affecting the initial workability.
- Early stripping and re-use of forms
- Faster finishing operations on flatwork surfaces
- Earlier post-tensioning.
- Effective with GU, MH, HE cements
- Use as a replacement for steam curing to save energy costs
- Increase early strengths and allow faster rotation of molds to increase productivity
- Use as a replacement for HE Type cement
- Insulation and heating costs for curing time can be reduced
- Earlier stripping and reuse of forms increases labor productivity
- Accelerated strength gain allows earlier structural use and speeds completion time
Usage
SikaRapid®-1 is designed for use in ready mix, precast and dry cast concrete applications and can provide substantial benefits in the following concrete applications requiring increased early age strength development:- Precast/prestressed concrete
- Cold weather construction
- Fast-track construction
- Bridge overlays
- Sustainable construction with reduced carbon footprint (embodied CO2) of concrete through cement reduction
Advantages
High Early Strength Concrete: SikaRapid®-1 delivers excellent results in normal and hot weather conditions where very high early strengths are required. Benefits- Early stripping and re-use of forms
- Faster finishing operations on flatwork surfaces
- Earlier post-tensioning.
- Effective with GU, MH, HE cements
- Use as a replacement for steam curing to save energy costs
- Increase early strengths and allow faster rotation of molds to increase productivity
- Use as a replacement for HE Type cement
- Insulation and heating costs for curing time can be reduced
- Earlier stripping and reuse of forms increases labor productivity
- Accelerated strength gain allows earlier structural use and speeds completion time
Packaging
205 L (54 US gal.) drum
1040 L (275 US gal.) IBC
Bulk delivery
Colour
Liquid / Pink/Purple
Product Details
ENVIRONMENTAL INFORMATION
- Conformity with LEED®v4 MR Credit (Option 1): Building Product Disclosure and Optimization – Environmental Product Declarations
APPROVALS / CERTIFICATES
- SikaRapid®-1 meets the requirements of ASTM C494 Type C accelerating admixtures.
Shelf Life
1 year when stored in dry warehouse conditions, at temperatures between 10 °C and 27 °C (50 °F and 80 °F).
Storage Conditions
Store at temperatures above 5 °C (40 °F). If frozen, thaw and agitate thoroughly to return to normal state.
Specific Gravity
Approx. 1.17
Application
Mixing
Measure the required quantity manually or by automated dispenser. Add SikaRapid®-1 directly into the freshly mixed concrete, or as an integral material in the batching cycle. Do not mix with dry cement. SikaRapid®-1 may be dispensed on site directly prior to placement. Care must be taken to mix thoroughly. When used in combination with other admixtures dispense each admixture separately into the mix.
Compatability with other admixtures: SikaRapid®-1 can be used in combination with other Sika admixtures and can be successfully used in mix designs utilizing supplementary cementitious materials. Do not mix SikaRapid®-1 with expansion agents.
Recommended Dosage
The typical dosage range for SikaRapid®-1 to increase early strength is 520-3120 mL/100 kg (8-48 fl. oz/100 lb) of cementitious material. When used to protect concrete from freezing a higher dosage may be necessary.
Dosage rates vary depending upon the amount of early strength gain desired. Slump, ambient temperature, water-cementitious ratio, mixing time and various concrete materials, such as type of cement and supplementary cementitious materials, will affect dosage rates. It is recommended to conduct trial mixes with the actual materials to determine the required dosage for optimum performance.
To the extent specialized materials (such as microsilica) are specified, extreme ambient project conditions are encountered, or other unusual project conditions require special consideration outside the recommended dosage, contact your Sika Canada Technical Sales Representative for further information.
