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<br /> 'Vater Reducing Admixture (ASTM C494) - ;-• ..4.N*,,, a ;;
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<br /> DESCRIPTION: • superior strength performance
<br /> DARACEM-55 is a mid-range water-reducer specifically formu- The water reduction properties,up to 12%,and dispersion
<br /> lated to produce concretes with dramatically enhanced fin- characteristics allow the production of lower water to
<br /> fishing characteristics and normal setting times.Effective through cement ratio concretes and more complete hydration.The
<br /> a wide addition rate range,DARACEM-55 combines the ben- combined effect is increased compressive and flexural
<br /> efits of normal and high range water reducers allowing for the strengths at all ages.
<br /> ultimate control of the concretes placing and finishing ADDITION RATE:
<br /> properties.
<br /> DARACEM-55 is an aqueous solution of complex organic corn- The addition rate range of DARACEM-55 is 3 to 9 fluid ounces per
<br /> pounds,each of which contributes uniquely to the concretes 100 pounds of cement.Typically excellent results are achieved
<br /> final properties.It contains both patented dispersing and pat- between 5 and 7 fluid ounces.Optimum addition depends on
<br /> ented finishability agents that provide performance superior to the other concrete mixture components,job conditions,and
<br /> conventional water reducing products. DARACEM-55 is also desired performance characteristics.
<br /> formulated with a catalyst which promotes more complete COMPATIBILITY WITH OTHER ADMIXTURES:
<br /> hydration of portland cement to assure superior strength per-
<br /> formance.It is manufactured under rigid controls which provide DARACEM-55 is compatible with all air entraining admixtures
<br /> uniform,predictable performance.DARACEM-55 contains no such as DAREX-AEA®and DARAVAIR®.Due to a synergistic ef-
<br /> calcium chloride.Supplied as a dark brown,low viscosity liquid, fect of DARACEM-55, the amount of air entraining may be
<br /> one gallon weighs approximately 10.7 pounds. reduced by 25-50%when added to concrete with DARACEM-
<br /> 55.By combining the separate effects of air entrainment and
<br /> USES: dispersion,the water requirement of concrete may be reduced
<br /> DARACEM-55 produces a concrete with lower water content, up to 15%.Each admixture should be added to the concrete
<br /> improved placement properties,and enhanced finishability.It separately.
<br /> yields a less permeable and more durable concrete. DISPENSING EQUIPMENT:
<br /> DARACEM-55 is used in ready mix,job site,and concrete paving
<br /> plants for normal and lightweight concrete,in block and pre- A complete line of accurate,automatic dispensing equipment
<br /> cast. It imparts a "slickness” to the surface of the concrete is available.DARACEM-55 may be added to the concrete mix
<br /> - taking it most appropriate for concrete flatwork as well as slip on the sand or in the batch water.
<br /> II firm work.DARACEM-55 is also particularly effective in lean or PACKAGING:
<br /> lyash and slag compensated mixes. DARACEM-55 is available in bulk, delivered in metered tank
<br /> ADVANTAGES: trucks,and 55 gallon drums. DARACEM-55 contains no flam-
<br /> DARACEM-55 offers significant advantages over conventional mable ingredients.
<br /> water reducers. Laboratory and field work has consistently ARCHITECT'S SPECIFICATIONS:
<br /> demonstrated: Concrete shall be designed in accordance with Standard
<br /> • ultimate workability and finishability Recommended Practice forSelecting Proportions for Concrete,
<br /> The exceptional water reducing capabilities allow for con- ACI 211.
<br /> crete production at higher slumps with better water re- The water reducing admixture shall be a mid-range water
<br /> tention and internal cohesiveness,providing a less"sticky" reducing admixture such as DARACEM-55 as manufactured by
<br /> concrete with improved placement properties.Formu- the Construction Products Division,W.R.Grace&Co.-Conn.,or
<br /> lated with proven finishing enhancing components, its equivalent.The admixture shall not contain calcium chloride.
<br /> DARACEM-55 controls bleeding while bringing the mortar It shall meet the requirements of Specification for Chemical
<br /> to the surface.Finishers have stated that the concrete has Admixtures for Concrete ASTM Designation C 494 as a Type A
<br /> improved trowelability.The influence of DARACEM-55 on admixture.Certification of compliance shall be made available
<br /> the finishability of lean mixes has been particularly notice on request.The admixture shall be considered part of the total
<br /> able.Floating and troweling,by machine or by hand,easily mixing water.
<br /> imparts a smooth,close tolerance surface with less ma- The admixture shall be delivered as a ready-to-use liquid product
<br /> chine time and labor. and shall require no mixing at the batching plant or job site.
<br /> • neutral setting times
<br /> Formulated with a set control agent,DARACEM-55 pro-
<br /> vides normal setting characteristics throughout its addition
<br /> rate range.This allows for increased water reduction and
<br /> increased slump without significantly extended setting
<br /> times.It also allows the flexibility to vary addition based on
<br /> specific job and weather requirements.
<br /> opyright 1992.W.R.Grace&Co.-Conn.giien em,her will a heard.it is ba and regon data a d knmarksowled af considered t Products aiv acc W.R.Grand is&Co.-dfor hee hope tco isidrmaion.
<br /> GRACE
<br /> on
<br /> given here will be helpful.it is based on data and knowledge considered to be true and accurate and is offered for the user's consideration,
<br /> investigation and verification but we do not warrant the results to be obtained.Please read all statements,recommendations or suggestions M
<br /> conjunction with our conditions of sale which apply to all goods supplied by us.No statement,recommendation or suggestion is intended for any
<br /> use which would infringe any patent or copyright.Construction Products Division,W.R.Grace&Co.-Conn.,62 Whittemore Avenue.Cambridge, Construction Products
<br /> MA 02140.
<br /> DW-12 Printed in U.S.A. 4/93 FA/GPS/3.5M
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