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NO. 342
HYDRASET-FREE®
NON-CHLORIDE CONCRETE SET ACCELERATOR
Speeds initial setting time...makes mix
easier to place...saves time and money
SEALTIGHT HYDRASET-FREE Non-Chloride Concrete Set Accelerator is a ready-to-use,
liquid admixture designed to speed initial setting time for concrete and mortar.
Technical Description
SEALTIGHT HYDRASET-FREE Non-Chloride Concrete Set Accelerator is a
ready-to-use, liquid admixture. It accelerates initial setting time 1 to 3 times
faster than normal for mortar and concrete. HYDRASET-FREE improves workability
and strength while it hastens the hydration of cement. It makes the mix easier
to place and speeds construction by shortening the initial set and curing time.
Labor and time are saved, because forms and other protection can be removed
earlier...and finishing can be initiated. HYDRASET-FREE should not be limited to
use during months when temperatures are in the 20º to 45ºF (-7º to +7ºC)
range. Increased workability and earlier strength are also obtained when
temperatures are in the 50º to 65ºF (10º to 18ºC) range, because any time
the temperature drops below 70ºF (21ºC), there is a reduction in the rate of
cement hydration. During cold and hot weather applications, follow 305 & 306
recommendations.
Uses
HYDRASET-FREE is recommended for use during cool and cold weather
to reduce the risk of frozen mortar and concrete mixes. However, HYDRASET-FREE
can be used any time the temperature drops below 70ºF (21ºC).
Features and Benefits
 | Accelerates initial set time 1 to 3 times faster than
normal for concrete and mortar
| Aids in strength development
| Hastens hydration of cement
| Increases workability or density of mix in colder
temperatures
| Speeds construction due to reduced setting and curing
time
| Allows earlier removal of concrete forms or other
protection
| Permits earlier finishing
| VOC-compliant |
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Application
HYDRASET-FREE is added directly to the
mix water. Reduce the amount of water proportionally to compensate for the
liquid addition. For masonry mortar, 2 quarts (1.89 liters) of HYDRASET-FREE for
1 bag of cement should be used. For mortar cements which are 50% Portland Cement
and 50% lime, 1/2 the amount, or 1 quart (950 ml) of HYDRASET-FREE is required.
Packaging
5 gallon (18.93 liter) Pails
55 gallon (208.20 liter) Drums
For concrete, the following quantities are recommended:
Temperature Range
Above 70ºF (21ºC)
70º to 32ºF (21º-0ºC)
32º to 25ºF (0º to-4ºC)
25º to 20ºF (-4º to-7ºC) |
Suggested Quantity of HYDRASET-FREE
1 pt. (.47 l) per bag of cement
1 qt. (.95 l) per bag of cement
1 to 1-1/2 qts (.95 to 1.42 l) per bag of cement
2 qts. (1.89 l) per bag of cement |
Specifications
ASTM C 494, Types C & E
AASHTO M 194, Type C
Corps of Engineers CRD C 87, Type C
Precautions
HYDRASET-FREE affects only the Portland
Cement portion of the mix and is not an antifreeze for the water portion.
Protect from freezing. HYDRASET-FREE has no effect on straight lime mortars and
should not be used with oxychloride stuccos. Use HYDRASET-FREE directly from the
factory-sealed container; do not dilute. Harmful or fatal if swallowed. Product
container provides complete application information. Read and follow application
information and precautions. Refer to Material Safety DataSheet for Complete
Health and Safety Information
This information last updated October 2000.
 
W. R. MEADOWS, INC. warrants that, at the time and place
we make shipment, our materials will be of good quality and will conform with
our published specifications in force on the date of acceptance of the order.
THE FOREGOING WARRANTY SHALL BE EXCLUSIVE AND IN LIEU OF ANY OTHER WARRANTY,
EXPRESS OR IMPLIED, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
FITNESS FOR A PARTICULAR PURPOSE AND ALL OTHER WARRANTIES OTHERWISE ARISING BY
OPERATION OF LAW, COURSE OF DEALING, CUSTOM OF TRADE OR OTHERWISE. As the
exclusive remedy for breach of this Warranty, we will replace defective
materials, provided, however, that the buyer examine the materials when received
and promptly notify us in writing of any defect before the materials are used or
incorporated into a structure. Three (3) months after W. R. MEADOWS, INC. has
shipped the materials, all our Warranty and other duties with respect to the
quality of the materials delivered shall conclusively be presumed to have been
satisfied, all liability therefore terminates, and no action for breach of any
such duties may thereafter be commenced. W. R. MEADOWS, INC. shall in no event
be liable for consequential damages. Unless otherwise agreed to in writing, no
warranty is made with respect to materials not manufactured by W. R. MEADOWS,
INC. We cannot warranty or in any way guarantee any particular method of use or
application of the performance of materials under any particular condition.
Neither this Warranty nor our liability may be extended or amended by our
salesmen, distributors or representatives, or by our distributor's
representatives, or by any sales information or drawings.
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