Beton-Chemie BC-80 is a non-chloride, accelerating, water-reducing admixture designed to aid the placement of concrete in cold or sub-freezing temperatures. BC-80 allows increased early and final strength gains formation, and can be used over a wide range of temperatures by varying the dosage. Beton-Chemie BC-80 can be used to accelerate cast stone, ready mix, mobile mix, block, precast and prestressed concrete, mortars, and grouts.
CONTROLLED ACCELERATION (DEPENDING ON DOSAGE)... ALLOWS EARLIER FINISHING AND FORM REMOVAL... IMPROVED WORKABILITY... DECREASED BLEEDING & SEGREGATION...REDUCED HEAT PROTECTION... PROVIDES DENSER CONCRETE.
Modified nitrate-based solution. BC-80 does not contain any calcium chloride or intentionally added chlorides that would initiate or promote corrosion of reinforcement steel, or contribute to efflorescence.
| PHYSICAL PROPERTIES at 70° F (21°C) | APPROXIMATE VALUES |
|---|---|
| WEIGHT PER GALLON | 11.4 ± 0.2 lb./ gallon |
| pH | 8.0 ± 0.5 |
| COLOR | Clear light brown liquid |
Beton-Chemie BC-80 Accelerator is formulated to comply with ASTM C-494 Type C and E guidelines. Beton-Chemie BC-80 is typically dosed at 16-32 oz. per 100 lbs. of cement (1040-2080ml / kg) for most applications. The dosage can be increased as needed to accelerate the setting time and both early and ultimate strength gain. Beton-Chemie recommends trial mix be run in order to determine the optimum dosage needed for set time and rate of strength gain requirements. The dosage will vary with jobsite temperature, air movement, concrete temperature and mass, mix design components or other admixtures, as well as heat, insulation, or wind-break protective measures used.
| SETTING TIME VERSUS DOSAGE RATE | Initial Set (Hr./ Min.) | Difference From Control Set |
|---|---|---|
| Plain (Control wet mix) | 4:40 | |
| Beton-Chemie BC-80 @ 16 oz/cwt (1040 mL/100 kg) | 2:40 | 2:00 |
| Beton-Chemie BC-80 @ 32 oz/cwt (2080 mL/100 kg) | 2:11 | 2.29 |
| Beton-Chemie BC-80 @ 64 oz/cwt (3900 mL/100 kg) | 2:00 | 2.40 |
| STRENGTH GAIN VERSUS CONTROL @ 40° F (8° C) | ||
|---|---|---|
| Compressive Strength psi | Plain (Control) | BC-80 @ 32 oz/cwt (2080 mL/100kg) |
| 1 day | 490 | 1225 |
| 3 day | 1050 | 1775 |
| 7 day | 2050 | 3200 |
| 28 day | 3250 | 4270 |
Strengths will vary with the type of cement, white and type 3 will normally yield higher early strengths.
Beton-Chemie BC-80 Accelerator should be added to the batch water and aggregates, never directly to the dry cement. BC-80 contains a high range water reducer that reduces water requirements approximately 5 to 12% depending on the dosage used. Beton-Chemie BC-80 is compatible with most other admixtures however; they should always be added separately into the mix. For temperatures 32° F to 60° F (0° to 16° C), add BC-80 to the concrete at the rate of 16-32 oz. per 100 lbs. of cement (1040-2080 ml / 100 kg) depending on the rate of acceleration and strength gain required. For use in concrete block production in temperature ranges of 32 to 60° F (0° to16° C), add Beton-Chemie BC-80 at a reduced rate of 6-12 oz. per 100 lbs. of cement (390-780ml / 100 kg).
For temperatures below 32° F (0° C) use warm water and heated aggregates to keep the concrete temperature above 60° F (16° C) if possible. Refer to ACI 306.1 report "Standard Specification for Cold Weather Concreting" for recommended protection methods of concrete placement in sub-freezing temperatures. For warmer temperatures above 60° F (16° C), the dosage can be reduced as needed.
Beton-Chemie BC-80 will freeze at approx. -15° F (-26° C), but may be completely restored by thawing above 32° F (0° C) and thoroughly mechanically agitating before use. Do not use pressurized air for mixing or agitation. Beton-Chemie BC-80 should be stirred before using if the material has set for an extended period (3-6 months). For industrial use only. Keep away from children or unprotected food and drink. Refer to Beton-Chemie BC-80 M.S.D.S. "Material Safety Data Sheet" for additional safety information.
5 gallon (18.9 L) pails, 55 gallon (208 L) drums, 265 gallon (1000 L) containers.
Recommended at 50° F (10° C) or above.
1 year when stored properly.
Class 55
This product is warranted to be of merchantable quality when used according to the instruction herein. It is not warranted to be suitable for any purpose or use other than the general purpose for which it is intended. Liability under this warranty is limited to the replacement of the product as purchased, if found to be defective upon inspection by the manufacturer. This limited warranty is issued and accepted in lieu of all other expressed warranties and explicitly excludes liability for consequential damages. Buyer assumes all risk and liability resulting from the use of this product.
BETON CHEMIE USA CORP.
P.O. Box 549
Cassville, GA 30123
Phone: 770/ 336-9391
Fax: 770/ 336-9394
E-mail: betonchemie@bellsouth.net