HomeMy WebLinkAboutPRODUCT DESCRIPTIONDAREX® AEA EH
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Air -entraining admixture BY
ASTM C260 St. Curia rolinty
Product Description
Darexv AEA EH is an air -entraining admixture which generates a highly stable air void system for
increased protection against damage from freezing and thawing, severe weathering, or de-icer
chemicals. Darex AEA EH is a complex mixture of organic acid salts in an aqueous solution specifically
41 formulated for use as an air -entraining admixture for concrete and is manufactured under rigid control
psr which provides uniform, predictable performance. It is supplied ready -to -use and does not require
pre -mixing with water. One gallon of Darex AEA EH weighs 8.5 Ibs (one liter weighs 1.02 kg). Darex
AEA EH complies to ASTM C260 Standard Specifications for Air-Entroining Admixtures for Concrete.
Uses
Darex AEA EH is used in ready -mix and concrete products plants
to improve air entrainment stability. Darex AEA EH performs well
in conventional concrete and is effective in plasticizing mixes with
slag, lightweight, or manufactured aggregates which tend to
produce harsh concrete. Darex AEA EH entrains air effectively with
microsilica concrete and with fly ash concrete.
Performance
Air is incorporated into the concrete by the mechanics of mixing
and stabilized into millions of discrete semi -microscopic bubbles
in the presence of a specifically designed air -entraining admixture
such as Darex AEA EH. These air bubbles act much like flexible ball
bearings increasing the mobility, or plasticity and workability of
the concrete. This can permit a reduction in mixing water with no
loss of slump. Placeability is improved. Bleeding, plastic shrinkage
and segregation are minimized.
Through the purposeful entrainment of air, Darex AEA EH markedly
increases the durability of concrete to severe exposures particu-
,Product Advantages
-,Air stability makes it. particularly useful for longer
transit times
Functions well across a wide range of concrete
materials
Economical to use in concretes which are typically
difficult to air entrain
larly to freezing and thawing. It has also demonstrated a
remarkable ability to impart resistance to the action of frost and
de-icing salts as well as sulfate, sea and alkaline waters.
Addition Rates
There is no standard addition rate for Darex AEA EH air -
entraining admixture. The amount to be used will depend upon
the amount of air required for job conditions, usually in the range
of 4% to 8%. Typical factors which might influence the amount of
air -entraining admixture required are temperature, cement, sand
gradation and the use of extra fine materials such as fly ash and
microsilica. Typical Darex AEA EH addition rates generally range
from % to 5 fl oz/100 lbs (30 to 320 mL/100 kg) of cement.
The air -entraining efficiency of Darex AEA EH becomes even
greater when used with water -reducing and set -retarding agents.
This may allow a reduction of up to % in the amount of Darex AEA
EH required for the specified air content.
Concrete Mix Adjustment
Entrained air results in increased yields with a consequent decrease
in the cement content of the placed concrete. This condition calls
for a mix adjustment, usually accomplished by reducing the fine
aggregate content. This is in addition to the reduction in water
content brought about by the increase in plasticity.
Compatibility with Other Admixtures and
Batch Sequencing
Darex AEA EH is compatible with most GCP admixtures as long
as they are added separately to the concrete mix. In general, it is
recommended that Darex AEA EH be added to the concrete mix near
the beginning of the batch sequence for optimum performance,
preferably by 'dribbling" on the sand. Different sequencing may be
used if local testing shows better performance.
Please see GCP Technical Bulletin TB-0110, Admixture Dispenser
Discharge Line Location and Sequencing for Concrete Botching
Operations for further recommendations. Darex AEA EH should not
be added directly to heated water.
Pretesting of the concrete mix should be performed before use, as
conditions and materials change in order to assure compatibility,
and to optimize dosage rates, addition times in the batch
sequencing and concrete performance. Please consult your GCP
Applied Technologies representative for guidance.
Packaging & Handling
Darex AEA EH is available in bulk, delivered by metered tank trucks,
totes and drums.
Darex AEA EH contains no flammable ingredients. Darex AEA EH will
freeze at about 30 OF (-1 °C), but its air -entraining properties are
completely restored by thawing and thorough mechanical agitation.
Dispensing Equipment
A complete line of accurate dispensing equipment is available.
These dispensers can be located to discharge into the water line,
the mixer, or on the sand.
Specifications
Concrete shall be air entrained concrete, containing 4% to 8%
entrained air- The air contents in the concrete shall be determined
by the pressure method (ASTM Designation C231), gravimetric
method (ASTM Designation C138) or volumetric method (ASTM
Designation C173). The air -entraining admixture shall be Darex
AEA EH as manufactured by GCP Applied Technologies, or equal.
The air -entraining admixture shall be added at the concrete
mixer or batching plant at approximately X to 5 fl oz/100 Ibs (30
to 320 mL/100 kg) of cement, or in such quantities as to give the
specified air contents.
We hope the information here wit be helpful. It is based on data and knowledge considered to be me and amrate, and is offered for consideration, investigation and verificauw by the user, but we do
not warrant the results to be obtained. Please read all statements, recommendations, and suggestiom, in conjunction with our conditions of sale, wNch apply to all goods supplied by us No statement,
recommendation, or suggestion is intended for any use that would infringe any patent, copyright. a other third party night.
Darn is a trademark. which may be registered in the United States and/or other countries, of GCP Applied Technologies Inc.
This trademark list has been compiled using availeble published information as of the publication date and may not accurately
reflect current trademark ownership or status
0 Copyright 2016 GCP Applied TecMalogies Inc. Al rights reserved.
GCP Applied Technologies Inc., 62 Whittemore Avenue, Cambridge, MA 02140 USA.
In Canada, 294 Clements Road, West, Ajax. Ontano. Canada Lls 3C6.
GCP0083 AIR-10-1216 gtp applied technologies
GCP Applied Technologies Inc.
62 Whittemore Avenue
Cambridge, MA 02140-1692
T 617-876-1400
gcpat.com/construction
Date: 5/19/2017
Richard Lorenz
Maschmeyer Concrete
1142 Watertower Road
Lake Park, FLORIDA 33403
Project Name: All projects
Product Selected: Darex® AEA
This is to certify that Darex AEA, a Air Entraining Agent, as manufactured and
supplied by GCP Applied Technologies Inc., is formulated to comply with the
Specifications for Chemical Admixtures for Concrete, ASTM: C260, AASHTO:
M154.
Darex AEA does not contain calcium chloride or chloride containing compounds
as a functional ingredient. Chloride ions may be present in trace amounts
contributed from the process water used in manufacturing.
Robert J. H000es
Product Development Engineer
WRDA® 64
Water -reducing admixture
ASTM C494 Type A and D
Product Description
WRDA® 64 is a polymer based aqueous solution of complex organic compounds. WRDA 64 is a
ready -to -use low viscosity liquid which is factory pre -mixed in exact proportions to minimize
" handling, eliminate mistakes and guesswork. WRDA 64 does not contain calcium chloride and
weighs approximately 10.1 Ibs/gal (1.21 kg/Q.
Uses
WRDA 64 produces a concrete with lower water content (typically
8% to 10% reduction), greater plasticity and higher strength. It
is used in ready -mix plants, block and concrete product plants, in
lightweight and prestressed work wherever concrete is produced.
WRDA 64 also performs especially well in concrete containing fly
ash and other pozzolans.
Finishability
The cement paste, or mortar, in WRDA 64 admixtured concrete
has improved trowelability. The influence of WRDA 64 on the
finishability of lean mixes has been particularly noticeable. Floating
and troweling, by machine or hand, imparts a smooth, close
tolerance surface.
Addition Rates
The addition rate of WRDA 64 is 3 to 6 fl oz/100 lbs (195 to
390 mL/100 kg) of cement. Pretesting is required to determine
the appropriate addition rate for Type A and Type D performance.
Optimum addition depends on the other concrete mixture
components, job conditions, and desired performance
characteristics.
Compatibility with Other Admixtures and
Batch Sequencing
WRDA 64 is compatible with most GCP admixtures as long as
they are added separately to the concrete mix, usually through the
water holding tank discharge line. In general, it is recommended
that WRDA 64 be added to the concrete mix near the end of the
batch sequence for optimum performance. Different sequencing
may be used if local testing shows better performance. Please see
GCP Technical Bulletin TB-0110, Admixture Dispenser Discharge
Line Location and Sequencing for Concrete Botching Operations
for further recommendations.
Pretesting of the concrete mix should be performed before use, as
conditions and materials change in order to assure compatibility,
and to optimize dosage rates, addition times in the batch
sequencing and concrete performance. For concrete that requires
air entrainment, the use of an ASTM C260 air -entraining agent
(such as Daravair or Darex' product lines) is recommended to
provide suitable air void parameters for freeze -thaw resistance.
Please consult your GCP Applied Technologies representative
for guidance.
Packaging & Handling
WRDA 64 is available in bulk, delivered by metered tank trucks,
totes and drums.
WRDA 64 will freeze at about 28 OF (-2 o C), but will return to full
Product Advantages strength after thawing and thorough agitation.
• Consistent water reduction and set times
• Improves` performance concrete containing
supplementary cementitious materials
• Produces concrete that is more workable, easy to
place and finish
High compressive and flexural strengths
Dispensing Equipment
A complete line of accurate, automatic dispensing equipment is
available. WRDA 64 may be introduced to the mix on the sand or
in the water.
Specifications
Concrete shall be designed in accordance with Standard Recom-
mended Practice for Selecting Proportions for Concrete, ACI 211.
The water -reducing (or water -reducing and retarding) admixture
shall be W RDA 64, as manufactured by GCP Applied Technologies,
or equal. The admixture shall not contain calcium chloride.
It shall be used in strict accordance with the manufacturers'
recommendations. The admixture shall comply with ASTM Desig-
nation C494, Type A water -reducing (or Type D water -reducing
and retarding) admixtures. Certification of compliance shall be
made available on request.
The admixture shall be considered part of the total water. The
admixture shall be delivered as a ready -to -use liquid product and
shall require no mixing at the hatching plant orjob site.
gcpat.com I North America Customer Service: l-877-4AD-MIX1 (1-877-423-6491)
We hope the information here will be helpful. It is based on data and kmwfedge considered to be true and accurate, and is offered for consideration, investigation and verification by the user, but we do
not warrant the results to be obtained. Please read all statements, recommendations. and suggestions in conjunction with our conditions of sale, which apply to all goods supplied by us. No statement.
recommendation, or suggestion is intended for any use that would infringe any patent, copyright, or other third parry right.
WRDA, Darawir and Darex are trademark; which may be registered in the United States and/or other countries, of GCP Applied
Technologies Inc This trademark hst has been compiled using available published Information as of the publ'oatlon date and may
not accurately reflect conent trademark ownership or status
® Copyright 2016 GCP Applied Technologies Inc. A9 rights reserved.
GCP Applied Technologies Inc. 62 Whattemore Avenue, Cambridge, MA 02M USA.
In Canada, 29A Clements Road, West, Ajax, Ontanc, Canada US 3C6-
applied technologies
GCP0083 Chi66-1216
gtp