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Gateway BP(2.5)-SP 981128G s K S ex.vrces CoppeL, rx RDied S 0`13aie14 CD^JsTR,, Wag The R 7 hr WRteRp+ 2 DO!Of CAel q -890 3L SateD l Sea Nr �Rw DO! CORNING 890 -SL SELF LEVELING 4p �ROrachQS 5 ;O NE JOINT SEALANT FOR ASPHyLi.,... New Product Information ;ARE CHL:(2 ∎EL FOR ACCU,RCY CORY: r;'tr 1t• A IN:2 GIIANTITy `i o N:3e i t. lY: No) C 0 'Q�BJ IEt 'o ned to traffic soon host applications. acili;y —under normal �citlons oared sealant stays rub fro: -5 tc 149'C -50 to 300'F) rout tearing, cracking or becoming ale. -;;ES 5 CORNING 890 -SL :1J- SILICONE JOINT -=ALA T FOR ASPHALT is designed sealing joints between asphalt and/ cncre;e :;ovements. Because of its t adhere to concrete and ,vents, DOW CORNING SL cwarly suitable for long 71 sewing of concrete to asphalt eiders ;cents. Additional uses _..u concrete to concrete and malt a::pnait expansion joints. e Limitations) r 0 0 that occurs during that perruu, an additional day should be added to the 7 day drying time. The sealant bead must be recessed below the highway surface to prevent abrasion from traffic and snow removal equipment. The concrete and asphalt pavements should be sound and with out signs of deterioration. If the asphalt pavement shows signs of deterioration, sealing the joint may result in further damage to the asphalt. Several variables can affect the suitability of an asphalt pavement for joint sealing. (i.e. thickness, mix type compaction, age and overall structural integrity of the asphalt pavement). In addition, pavements with poor base conditions, including numerous patches, misaligned slabs and mid :.i`.:OCIr, t ES, INC. DOW CORNING CITY ....Afe.„,,,02.5.ttir 3 CORRECTED REVISE -.KJ RESUBMIT REJECTED NOT SUBJECT TO REVIEW Review and approval are for conformance with the information given and the design concept of the Project as ettpmesmi b the Contract subsea!, Review and approval of subse ea sot ooa udd or the purpose of determining the accuracy and eoulpiebes details, such as dimensions and quantities, Or 101 Wbsbattati i:rstructions for the tnstaUatioa et potions* a1 equipment or ty tems, all of whkh remain the respooslhia e11he CO n as ot a;uired by the Contract Documents. Robe of approve! .trute approval of any construction MUM, Methellita, techniques, or r safety precautions of procedures. Date thick bead. DOW CORNING 890 -SL SELF- LEVELING SILICONE JOINT SEALANT FOR ASPHALT should be no :nicker than 1/2 inch (12.7 mm) and no thinner than 1/4 inch (6.4 mm). Within these limits, the sealant width to depth ratio should be 2:1. In all cases, the sealant must be recessed below the road surface at least 1/4 inch with 1/2 inch recess being acceptable in wider joints (see Table I). COW CORNING 890 -SL SELF- LEVELING SILICONE JOINT SEALANT FOR ASPHALT is a self -lev- eling sealant and does not require a separate tooling step. Because the sealant is self leveling it should only be used in horizontal joints. In new construction, where the joint is hiGnwav Heavy Construction, June 1988. p. 53. 6 I K Se ..0ices Copped, Tx RDcie2S 0731.41e14 CR i�l kle•Athea T,yhr' p CO..14 /AI `81b 3L Sara/4 DO CORNING 890 -SL SELF LEVELING AaoacACt�Qs S'_ ,_,'ONE JOINT SEALANT FOR ASPHALL_ C, hfAtoeel►fo-3' New Product InTormation DE:1;o: ;r='TION –DRN NG 890 -SL SELF- _VEL ING SILICONE JOINT S r FOR ASPHALT is a one- self leveling silicone sea:,:, reacily extrudes over a wiac. :perature range and cures to produce a curable, flexible, ultra -low mccu:cs silicone rubber joint seal for use cn asphait and /or Portland Cen;r Concrete (PPC) applications. Bec se of its ultra -low modulus charac ristics and good extension/ OCT r 'eccvery (+1C0%/-50% of nt widtn), DOW CORNING F.;F._EVELING SILICONE OEALANT FOR ASPHALT give; o.'.standing performance in hignwa airport and bridge joints in which extreme movement occurs. D0` :ORNING 890 -SL SELF•. E'_ING SILICONE JOINT FOR ASPHALT is designed to r; 7,-. as a durable joint seal be- twe andior concrete pairi' „_.Its. Baca its aoility to firmly adhere to cc ^.cate and asphalt pavements, DOv CORNING 890 -SL is particularly suitab for long term sealing of concrete to asphalt shoulder joints. Ad- ditional uses include concrete to cone ete and asphalt to asphalt expan- sion joints. (See Limitations) FEATURES: Ease or appication— self leveling (no g step), oc ea o use as ied; dispense the bui I c n ta i ner into the lai c, nard or with an air powered pump. All- temperature gunnability— con:.;stcncy and self- leveling charac- :erls :oo are relatively unchanged over ncrrnal stallation temperature range. aeon DOW CORNING DOW CORNING 890 -SL SELF LEVELING SILICONE JOINT SEALANT FOR ASPHALT Type Ultra -low modulus silicone Cure One part; cures at room temperature by reaction with moisture in air Special Properties Self- leveling, no tooling required, unprimed adhesion to asphalt and PCC pavements Primary Use Specially designed for sealing joints between asphalt shoulders and concrete pavements Unprimed adhesion primer is not required for bonding to concrete or asphalt pavements. For optimum adhesion, the surface must be clean, dry and frost free. Seals irregular surfaces— self leveling characteristics of the sealant lend itself to sealing irregular joint surfaces by providing adequate contact to the substrate without the need for tooling. High movement capability —the TYPICAL PROPERTIES These values are not intended for use in preparing specifications or joint desians. but for comparison of rubber properties. As Supplied Color Charcoal Gray Flow, Sag or Slump Self- leveling Viscosity, poise 120 Extrusion Rate, grams per minute 400 Percent Solids, 97 Specific Gravity 1.3 -1.4 Working Time, minutes ;<-epr!Eh ...fa.. 15 Skin Over -Time, at 25 °C (77 °F), minutes c.'.;c;.a�:••q..,.,.. -•30 Cure Time, at 25 °C (77°F) days Full Adhesion, days r 21 As Cured —after 21 days at 25°C (77°F) and 50°% Rh 4i Elongation, percent Modulus @a 50% Elongation, psi Modulus 100% Elongation psi Modulus 150% Elongation, psi Durometer Hardness, shore 00, points Adhesion to Concrete, min. Elongation Adhesion to Asphalt, min. Elongation ,yw Ali• I( 1 600 i.Y •4t 't 8 s :.i...... 9 40 +600 +600 Specification writers: Please contact Dow Corning Corporation, Midland, Michigan before writing specifications on this product. _aiar•t nii'• Jert in a continuous nt movement of ±100 -50 �itr Gov, modulus the sealant ,retcnes 13 100% in the joint with very e stress :ne bondline or joint ,1.• zes tne probability of -ai w th continuous or vemant. Jcint move- :emperature, snrink- requires a sealant that :ces not strongly resist stress and /or ear. eias:ic —the sealant can be etched to 100% or compressed 50% ne join: •width and held there. When •eased, the sealant will recover 95% greater cr tne original dimension. le extension and /or compression can repea:: d riany times and the :cant esume its original shape r cracks. ;esillent --once cured, the sealant ✓ents st and other noncom essab,es rcm entering the joint by ueez.n them out as soon as the p.:sr the noncompressabies the sea s removed. ._cc.... _raoJity —a 100% s reiativeiy unaffected ozone or tem- Most organic colt temperatures id sorter :r, warm weather. Organics a,so eenrace and crack in nlig'�.t e r ;;pically, the sealant will e a s.:. n- :ver -lime of one hour or Wit n: a recessed joint design, the ad car. ne :,caned to traffic soon Sevin_ in most applications. cng fe ellability —under normal cn .rr c red sealant stays rub :ry from 5 to 149'C -50 to 300 °F) rout :earn,, cracking or becoming 3E5 C;ORiING 890 -SL _F- LEVELING SILICONE JOINT Ain FOR ASPHALT is designed sea:ir �.a between asphalt and/ _;;ncrete .:avements. Because of its ..;lty :o n,: achere to concrete and .unalt pavements, DOW CORNING SL ..,ouiarly suitable for long sealinJ of concrete to asphalt oulders points. Additional uses elude concrete to concrete and ,:;Halt to asphalt expansion joints. 'e Limitations) DOW CORNING 890 -SL SELF LEVELING SILICONE JOINT SEALANT FOR ASPHALT cart be used as the original sealant in new highway construction or as a remedial or repair sealant in old construction. In new co struction, it provides a long lasting seal that will prolong the life of the pavement and prevent water and noncompressables from entering into the joint and damaging the pavement. For use in repair or remedial applica- tions where other joint sealing materi- als have failed because of excessive movement or poor weatherability, DOW CORNING 890 -SL SELF LEVELING SILICONE JOINT SEALANT FOR ASPHALT can be used to seal irregularly shaped and /or spelled joints. These joints should be clean, dry and free of all old sealing compounds. LIMITATIONS DOW CORNING 890 -SL SELF LEVELING SILICONE JOINT SEALANT FOR ASPHALT is not recommended for continuous water im- mersion. it should not be applied in totally confined spaces where the sealant is not exposed tc atmospheric moisture Tne sealant should never be applied to wet or damp concrete or asphalt pavements or installed during inclement weather. New concrete must be allowed to cure and dry for at least 7 days of good drying weather. For each day of rain that occurs during that period, an additional day should be added to the 7 day drying time. The sealant bead must be recessed below the highway surface to prevent abrasion from traffic and snow removal equipment. The concrete and asphalt pavements should be sound and with out signs of deterioration. If the asphalt pavement shows signs of deterioration, sealing the joint may result in further damage to the asphalt. Several variables can affect the suitability of an asphalt pavement for joint sealing. (i.e. thickness, mix type compaction, age and overall structural integrity of the asphalt pavement). In addition, pavements with poor base conditions, including numerous patches, misaligned slabs and mid slab cracking are not candidates for saw and sealing techniques.' Suitability of DOW CORNING 890 -SL SELF LEVELING SILICONE SEALANT FOR ASPHALT for sealing asphalt expansion joints should be determined by thoroughly testing the product in your specific applications. For further details, please contact your Dew Corning Technical Service Repre- sentative. Joints should be prepared by saw cutting and not routing. Routing of concrete and asphalt pavements can cause microfractures in the pavement that can lead to poor joint perform- ance. HOW TO USE Ultra low modulus DOW CORNING 890 -SL SELF LEVELING SILICONE JOINT SEALANT FOR ASPHALT easily withstands extreme joint movement when properly applied. The sealant will withstand 100% extension and 50% compression of the original joint width. However, the recom- mended movement design is for +50% ano 25% and not at the sealant limits. The difference ensures a successful seas when job site joint widths are different than designed widths. Therefore, the joint design dimensions should be less than the ultimate sealant capability. A thin bead of silicone sealant will ac- commodate more movement and result in less bondline stress than a thick bead. DOW CORNING 890 -SL SELF LEVELING SILICONE JOINT SEALANT FOR ASPHALT should be no thicker than 1/2 inch (12.7 mm) and no thinner than 1/4 inch (6.4 mm). Within these limits, the sealant width to depth ratio should be 2:1. In all cases, the sealant must be recessed below the road surface at least 1/4 inch with 1/2 inch recess being acceptable in wider joints (see Table I). DOW CORNING 890-SL SELF LEVELING SILICONE JOINT SEALANT FOR ASPHALT is a self lev- eling sealant and does not require a separate tooling step. Because the sealant is self leveling it should only be used in horizontal joints. In new construction, where the joint is Highway Heavy Construction, June 1988, p. 53. TABLE I: RECOMMENDED BACKER -ROD INSTALLATION (SHALLOW CUT)` Joint Width Recessed Beiow Surface eilunt Thickness '2. o__Ker Rod Diameter .cint Depth "On road surfaces where grinding is planned at a later date, the sealant and backer rod should be installed so that sealant is approximatiey ,.4 Inc below the road surface after grinding is complete. An additional small amount should be added to allow for surface imperfections on the bottom and to provide room for old sealant to pump up from below during rehabilitation work in the summer months. a shallow cut is recorn- rr, .vnere the backer rod is piU 21 :he bottom of the joint F gur snallow cut saves time and saw 2.4des. In repair or remedial work, where previous sealing materials have faded, care snould be taken to completely remove the failed sealant from the joint faces. A standard joint design is recommended in which the backer rod is si gnuy above the shelf. Extra space sncula oe provided to allow for pos- sio e :..mping" of old failed joint sea.ar::nat may nave fallen below the FIGURE I: GOOD JOINT DESIGNS STANDARD JOINT Jc.;., .tiiotr wide enough to accomodate movement. (For additional information on joint wider, 3e,, papers by Spells and Klosowski, "Silicone Sealants for Use in Concrete Constr:o:,on,' Vol. 1, No. 1, American Concrete institute, SP -70, 1981 and J.B. Cook, "Construction Sealants and Adhesives," Wiley Interscience, 1970). 2. ,c,nt ;awed deep enough to allow backer rod/sealant placement and space for pumping cf old sealing compounds. NOTE: This applies to standard joints only; void space beneath backer rod in new construction is not needed. 3. Piper backer -rod placement 4. nstaled to proper depth and width. 4 inch to 2 r.cn below paverne ;race. 1/4" 3/8" 1/2" 1i4 1/4" 1/4" 1/4" 1/2" 1/4" 1/4" 3/8" 1 /2" 3/8" 1/2" 5/8" 7/8" 174" 7,'8 1 -1 1 -1 When 890 -SL is used for sealing reflection cracks in asphalt pavements, accitional joint preparation steps must be "used. Cracks that have formed in the asphalt pavement must be totally removed by saw cutting. This can be accomplished by saw cutting along both sides of the crack, exposing freshly cut and sound asphalt joint faces. When 890 SL is used to seal concrete to asphalt shoulder joints, care must be taken to ensure that the asphalt is completely removed from the concrete face to which the sealant will be boncing. This can be accomplished by SHALLOW CUT JOINT FOR NEW CONSTRUCTION INSTALLATION 3/4" 1/2" 1' /2 -1 21/4-2 saw cutting tightly along the concrete. A fresh and sound joint face must also be prepared in the asphalt by saw cutting. DOW CORNING 890 SELF LEVELING SILICONE JOINT SEALANT FOR ASPHALT is part of a system which must include the proper backer rod and proper installation procedures. SOF ROD supplied by Applied Extrusion Technologies is rec- ommended for general use, especially in irregular joints. In joints that are very consistent in width and have smooth parallel surfaces, expanded closed cell polyethylene foam may be used. Sev- eral other types of back -up materials (paper, fibrous ropes and open cell polyurethane foam) are available but have proven to be unacceptable. It is recommended that care be given to selection of the proper oversized backer rod, so that it fits tightly in the joint. This will prevent the self leveling sealant from leaking past the backer rod to the bottom of the joint. When installing DOW CORNING 890 -SL SELF LEVELING SILICONE JOINT SEALANT FOR ASPHALT, it is critical that the joint be clean and dry prior to and during installation. Several procedures have been used in the past. However, experience has shown that some are less reliable than others. Water blasting, grinding, routing and wire brushing are no longer considered acceptable cleaning methods. Instead, the following procedure is considered most reliable and is recommended for cleaning and drying the joint: 1. Clean all joints of contaminants and impurities to the depth at which the sealant and backer rod are to be I gay require cutting im- e.diate y 7oilowed by flushing to -mcve residual laitance. Flushing uia ue cone in only one direction to :uce reccntaminadon of the joint es. Arta: drying, at least the top inch eacn join: face must be sandblasted ensure a sound, clean surface for _alant a ciication. andblasting should be performed in a passes ;one for each joint face) the r;c:Zie held at an angle to the .oe anc r ot more than 2 inches blow. :ust loose particles and cec rom joints in one direction w t o1. -free compressed air. .rfaces must be sound, clean, dry, �st -free r:d dust -free and can be eckeo cy running a finger along the a r t a ,Hite, chalky dust gear :he 'ginger, the joint must be st :ne. recommended back -up a joints. This material nits apo..cauon fo the sealant at a .ntroiled cepth and acts as a bond Baker to a!ow the silicone sealant to etch freely witn joint movement. See tor groper depth. Apply DOW CORNING 890 ELF-LEVELING SILICONE JOINT =ILAN T FOR ASPHALT in a con operation to properly fill and the Joint. (See Table II). The use:: :o Install the sealant id pe �cn that the joint is filled aLE II: ESTIMATING REQUIREMENTS' from the bottom up. Filling in this manner displaces air from the joint and eliminates the likelihood of creating air voids in the sealant. Do not overfill the joint. The sealant must be recessed below the pavement surface (see Figure I). In case of an overfilled joint, excess sealant must be removed such that proper joint geometry and recess are maintained. For maximum perform- ance, the sealant should be applied at a temperature above 40 °F (4.4 °C). New concrete must be allowed to cure and dry for a minimum of 7 good drying days prior to sealant installation for optimum adhesion. For each day of wet or rainy weather, an additional day of dry weather must be added to the drying per 5. DOW CORNING 890 -SL SELF LEVELING SILICONE JOINT SEALANT FOR ASPHALT is self leveling and tooling the sealant is not recommended. The sealant will self level and developed good contact with the joint face without tooling. 6. Excess sealant may be cleaned off tools and equipment while in an uncured state with a commercial solvent such as xylol or a "high flash' solvent. Use appropriate precautions with regard to fire hazards and eye and skin contact. (Use goggles and gloves, if needed). 7. Joints that have been properly recessed may be opened to traffic as ,7ear feet per gallon of DOW CORNING 890 -SL SELF LEVELING :.ICONE JOINT SEALANT FOR ASPHALT for various joint widths. nt Bead :c�ness. :;nes _ones tv1inimum Joint Deptn, Inches 1 1'/4 5,8 5.16 1 3/8 1 3 7,15 1' /a 2 2 1.2 2+ Backer Backer Rod Roc Placement Estimated Diameter, Depth, Linear Inches Inches Feet/Gallon 3/8 1/2 275 1/2 1/2 185 5/8 1/2 140 3/4 9/16 90 1 7/8 60 1 11/16 45 1 3/4 35 1 3/4 :rues ,till rary cepending on joint design, tooling, backer rod placement and waste. soon as the installation equipment can be cleared from the traffic lane. NOTE: For complete installation instructions, see Installation Guide for DOW CORNING 890 -SL SELF LEVELING SILICONE JOINT SEALANT FOR ASPHALT. CAUTION! UNCURED SEALANT MAY CAUSE INJURY IF SWALLOWED IN LARGE AMOUNTS. *DIRECT CONTACT WITH UNCURED SEALANT MAY CAUSE TEMPORARY EYE DISCOM- FORT. POSSIBLE REPRODUCTION HAZARD CONTAINS A PROPRIE- TARY INGREDIENT WHICH FORMS N- METHYLACETAMIDE (N -MA) DURING CURE. N -MA MAY CAUSE ADVERSE REPRODUCTIVE EF- FECTS BASED ON ANIMAL DATA. Do not put in mouth or take internally. Avoid prolonged (longer than six hours) skin contact. Avoid breathing of vapor. Do not use in poorly ventilated spaces. Avoid eye contact. Do not handle contact lenses with sealant on hands. IF SWALLOWED, obtain medical attention. IN CASE OF INHALATION ILL EFFECTS, remove to fresh air. Get medical attention of effects persist. IN CASE OF EYE CONTACT, flush eyes with water. Fully cured sealant is non hazardous.KEEP OUT OF REACH OF CHILDREN. SPECIAL USE AND SAFE HANDLING INFORMATION: Traces of formaldehyde and other thermal decomposition products may form at temperatures above 150 °C (302 °F) in the presence of air. Provide ventilation to control vapor exposure within inhalation guidelines when handling at elevated temperatures. SHIPPING LIMITATIONS None STORAGE AND SHELF LIFE When stored in the original, unopened container at or below 32 °C (90 °F), DOW CORNING 890 -SL SELF LEVELING SILICONE JOINT SEALANT FOR ASPHALT has a shelf life of 6 months from date of shipment. Keep containers tightly closed. PACKAGING DOW CORNING 890 -SL SELF-LEVELING SILICONE JOINT SEALANT FOR ASPHALT is supplied 29- fl.oz. (857 -m1.) disposable car trages, 4.5 -gal. (17 -L) bulk pails and 40-gal. (151.4 -L) bulk drums. WARRANTY INFORMATION PLEASE READ CAREFULLY Dow Corning believes that the �rmation in this publication is an .�pur:te description of the typical racteristics andior uses of the or products, but it is your responsibility to thoroughly test the Ln your specific application to 2eeermine its performance, efficiency safety. L-r,ess Dow Corning provides you with a specific written warranty of fitness for a carticu use, Dow Corning's sole r., rranty is that the product or products meet the current specifications. DOW CORNING SPECIFICALLY D SCLAIMS ANY OTHER EXPRESS OR IMPLIED WARRANTY, INCLUD- ING THE WARRANTIES OF MER- CHANTABILITY AND OR FITNESS FOR USE. Your exclusive remedy and Dow Corning' sole liability for breach of warranty is limited to refund of the purchase price or replacement of any procuct shown to be other than as war- ,rated, and Dow Corning expressly cis ,aims any liability for incidental or �q �ntial damages.