Sika Set R.H.E.
LOW TEMPERATURE, NON-CHLORIDE, ACCELERATING ADMIXTURE
Sika Set R.H.E. is a unique, next generation, non-chloride accelerating admixture for concrete. In laboratory and field evaluations against the major competitive non-chloride accelerators, Sika Set R.H.E. has demonstrated unsurpassed acceleration of setting time and strength over a wide range of cold weather temperatures and dosages. With adequate protection, concrete containing Sika Set R.H.E. can be placed in subfreezing temperatures with superior setting time and compressive strength results. Field evaluations must be conducted in order to determine Sika Set R.H.E. dosage necessary in order to meet setting time and strength development requirements.
- Superior set acceleration.
- Controlled acceleration (determined by dosage).
- Reduced segregation and bleeding.
- Reduced permeability.
- Superior finishability.
- Increased durability.
- Earlier stripping and re-use of forms.
- Increased early and ultimate compressive and flexural strengths.
- Reduced protection time and/or protective measures in cold weather
Usage
Sika Set R.H.E. is designed for concrete where accelerated setting and strength gain characteristics are desired. Sika Set R.H.E. is especially effective in concretes containing such pozzolanic materials as fly ash, silica fume and slag. In addition to the set accelerating characteristics of Sika Set R.H.E., the strength gains allow earlier finishing and form removal as well as reducing energy costs in cold-weather concretingAdvantages
- Superior set acceleration.
- Controlled acceleration (determined by dosage).
- Reduced segregation and bleeding.
- Reduced permeability.
- Superior finishability.
- Increased durability.
- Earlier stripping and re-use of forms.
- Increased early and ultimate compressive and flexural strengths.
- Reduced protection time and/or protective measures in cold weather
Packaging
205 L (54 US gal.) drum
1040 L (275 US gal.)
IBC Bulk delivery
Colour
Brown liquid
Product Details
APPROVALS / CERTIFICATES
Sika Set R.H.E. meets or exceeds the requirements of ASTM C494, Types C and E and CSA A23.1-00.
Shelf Life
1 year when stored in dry warehouse conditions between -29 to 27°C (-20 to - 80°F).
Storage Conditions
Store at above -29°C (-20°F). If frozen, thaw and agitate thoroughly to return to normal state. Protect from direct sunlight.
Specific Gravity
Approx. 1.4
Application
Mixing
MIXING
For best results, it is recommanded to dispense SikaSet® RHE into the batched water. Sika Set R.H.E. is compatible with other Sika® admixtures. However, each admixture should be added separately to the mix
Recommended Dosage
DOSAGE
The recommended dosage range for Sika Set R.H.E. is 650 - 1300 mL/100 kg of cementitious material. However, if necessary, this dosage range may be extended to 325 - 3900 mL/100 kg of cementitious material. The accelerating effect of the admixture is proportional to the dosage. When concreting at sub-zero temperatures, dosage can be increased up to 5850 mL/100 kg. Consult your Sika representative for dosage recommendations. It is suggested that trial batches be conducted in order to determine the required dosage for optimum performance with your concrete components. Contact your Sika Canada Technical Sales Representative for further information
RECOMMENDED DOSAGE RATE CHART
| Concrete Temperature at the Batching Plant | Concrete Temperature at the Batching Plant | |
| Ambient Temperature | 15 to 20°C (60 to 68°F) | 21 to 24°C (70 to 75°F) |
| -7 to -3°C (20 to 25°F) | 5220 mL | 4890 mL |
| -4 to -1°C (26 to 30°F) | 4890 mL | 4560 mL |
| 0 to 2°C (32 to 35°F) | 4560 mL | 4240 mL |
| 3 to 5°C (36 to 41°F) | 4240 mL | 3910 mL |
| 6°C (42°F) | 3910 mL | 3590 mL |
The dosage rates are a suggested starting point for your mix design. Many factors can influence your specific mix and test trials are strongly recommended. When using the dosage chart, choose the proper dosage rate by using the predicted low temperature for the eight hours after placement.
When the wind chill will be below -9°C (15°F), this procedure is not recommended, due to rapid heat loss from the concrete.
When the load size is less than 4 m³ (5 yd³), the concrete temperature should be above 21°C (70°F) with heated sand if available. Heat loss will occur more rapidly with small loads.
Concrete temperature exceeding 24°C (75°F) may cause rapid slump loss and should therefore be avoided.
For low slump concrete mixes (50 mm/2 in or less) such as curb and gutter applications:
- Concrete temperatures should be between 15 - 20°C (60 - 68°F) degrees to avoid slump loss.
- Reduce the recommended dosage by 1300 mL/kg.
