| 03 05 00 |
No. 341-A |
|
|
CALCIUM CHLORIDE CONCRETE SET ACCELERATOR
Description
HYDRASET Calcium-Chloride Concrete Set
Accelerator is a ready-to-use, liquid admixture. It accelerates initial setting
time one to three times faster than normal mortar and concrete.
HYDRASET improves workability and strength while hastening the hydration of
cement. It makes the mix easier to place and speeds construction by shortening
the initial set and curing time. Time and labor are saved, because forms and
other protection can be removed earlier, and finishing can be started.
HYDRASET should not be limited to use during months when temperatures are in
the 20º to 45º F (-7º to +7º C) range. Increased workability
and earlier strength are also obtained when temperatures are in the 50º
to 65º F (10º to 18º C) range, because any time the temperature
drops below 70º F (21º C), there is a reduction in the rate of cement
hydration. During cold and hot weather application, follow ACI 305 & 306
recommendations.
Uses
HYDRASET is recommended for use during cool and cold weather to
accelerate the set time and reduce the risk of frozen mortar and concrete mixes.
However, HYDRASET can be used any time you want to accelerate the set time to
decrease turnaround time.
Features/Benefits
Packaging
5 Gallon (18.93 Liter) Pails
55 Gallon (208.20 Liter) Drums
Specifications
ASTM C 494, Type C
AASHTO M 194, Type C
Corps of Engineers CRD C 87, Type C
Application
HYDRASET is added directly to the mix water. Reduce the amount
of water by 5 to 7% to compensate for the liquid addition. For masonry mortar,
two quarts (1.89 liters) of HYDRASET for each 94 lb. (42.73 kg) bag of cement
should be used. For mortar cements that are 50% Portland cement and 50% lime,
one-half the amount, or one quart (950 ml) of HYDRASET, is required.
For concrete, the following quantities are recommended:
|
Temperature Range Above 70º F (21º C) 70º to 32º F (21º to 0º C) 32º to 25º F (0º to -4º C) 25º to 20º F (-4º to -7º C) |
Suggested Quantity of HYDRASET for each 94 lb. (42.73 kg) bag of cement 1 pt. (.47 L) 1 qt. (.95 L) 1 to 1 1/2 qt. (.94 to 1.42 L) 2 qts. (1.89 L) |
Precautions
HYDRASET affects only the Portland cement
portion of the mix and is not an antifreeze for the water portion. HYDRASET
has no effect on straight lime mortars and should not be used with oxychloride
stuccos. Use HYDRASET directly from the factory-sealed container; do not dilute.
Avoid direct contact. Ingestion may cause moderate to severe iritation of the
digestive tract. Read and follow complete application information and precautions
on container, prior to use. Consult product Material Safety Data Sheet for complete health and safety
information.
This material last updated July, 2006.
