7007 SEAWAY BLVD 2019-02-06 - Laserfiche WebLink

,:,:i WRDA°o �; r .. ..,1 : r. trt ,.. sf. g: _ n:: ,1,-.::: water Reducing Admixture i fi ff C494Types A & D I. t DESCRIPTION: DISPENSING EQUIPMENT: WRDA®-64 is a polymer based aqueous solution of corn- A complete line of accurate,automatic dispensing equip- plex organic compounds.WRDA-64 is a ready-to-use low ment is available.WRDA-64 may be introduced to the mix viscosity liquid which is factory pre-mixed in exact on the sand or in the water. proportions to minimize handling,eliminate mistakes and guesswork. COMPATIBILITY WITH OTHER ADMIXTURES: WRDA-64 contains no calcium chloride. One gallon WRDA-64 is compatible in concrete with all air entraining weighs approximately 10.1 lbs. admixtures such as DAREX®AEA and Daravair®. Due to the slight air entraining properties of WRDA-64, itself, the USES: addition rate of air entraining admixture may be reduced WRDA-64 produces a concrete with lower water content by about 25%. By combining the separate effects of air (typically 8 to 10%reduction),greater plasticity and higher entraining and dispersion, the water requirement of • strength.It is used in ready-mix plants,block and concrete concrete may be reduced up to 15%. Each admixture product plants, in lightweight and prestressed work . . . should be added separately.While WRDA-64 contains no wherever concrete is produced. calcium chloride,it is compatible with calcium chloride in concrete mixes.Again,each should be added separately. ADVANTAGES: WRDA-64 offers significant advantages over single PACKAGING: component water reducers.Water reduction and setting WRDA-64 is available in bulk,delivered by metered tank timesare more consistent due to the polymer components. trucks,and in 55-gallon drums.WRDA-64 contains no flam- WRDA-64 also performs especially well in concrete mable ingredients.It will freeze at about 28`F,but will return containing fly ash and other pozzolans. to full strength after thawing and thorough agitation. .T""- use of WRDA-64 produces a plastic concrete that is ARCHITECT'S SPECIFICATION FOR CONCRETE WATER workable,easier to place and more finishable than REDUCING ADMIXTURE: ;ttat•r other admixtured concrete.In the hardened state, Concrete shall be designed in accordance with ACI �r�•-64 concrete has higher compressive and flexural Standard Recommended Practice for Selecting Propor- strengths at all ages than untreated or conventional tions for Concrete,ACI 211. admixtured concrete. The greater degree of plasticity achieved, compared The water reducing (or water reducing and retarding) withadmixture shall be WRDA-64,as manufactured by Grace conventional water reducing admixtures, allows improved finishabilily. Construction Products, or equal. The admixture shall not contain calcium chloride. It shall be used in strict accor- FINISHABILITY: dance with the manufacturer's recommendations. The Finishers have stated that the cement paste,or mortar,in admixture shall comply with ASTM Designation C494,Type WRDershA-64 admixturedstated concrete has improved A water reducing(or Type D water reducing and retarding) admixtures. trowelability.The influence of WRDA-64 on the finishability of lean mixes has been particularly noticeable. Floating availablebleCertification of compliance shall be made request. on and troweling, by machine or hand, imparts a smooth, The admixture shall be considered part of the total water. close tolerance surface. The admixture shall be delivered as a ready-to-use liquid product and shall require no mixing at the batching ADDITION RATE: plant or job site. The addition rate range of WRDA-64 is 3 to 6 fluid ounces per 100 pounds 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. 1992.W.R.Grace&Co.-Conn. WRDA,Darex and Daravair are registered trademadcs of Construction Products Division,W.R.Grace&Co.-Conn.We hope the information given ( E ()E here wit be helpful,ft is based on data and knowledge considered to be true and accurate and is offered for the user's consideration,investigation and verification but we do not warrant the results to be obtained.Please read all statements.recommendations or 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 which would infringe any patent or copyright.Coirstruction Products Division,W.R.Grace&Co.-Conn..62 Whittemore Avenue,Cambridge,MA 02140. Construction Products CMD-366A Printed in U.S.A. 12/92 FA/GPS/2.5M