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EAS - 8 EPOXY ADHESIVE SYSTEM STATE SPECIFICATION MATERIAL EAS-8 GRADE 1, CLASS A for cold weather use. EAS-8 GRADE 2, CLASS C for warm weather use. DESCRIPTION: EAS-8 is a two part epoxy polysulfide rubber adhesive designed to bond hardened concrete and other materials to hardened concrete (Type I), freshly mixed concrete to hardened concrete or asphalt (Type II), and for bonding skid resistant materials to hardened concrete, as well as a binder in epoxy mortars or epoxy concrete (Type III). Both of the above products meet all three Type l, Type ll and Type lll requirements. Designations of EAS-8 are in accordance with ASTM C881-83/ AASHTO M235- 86 specifications. Grade 1 - Low Viscosity (less than 2,000cps) Grade 2 - Medium Viscosity (2,000 to 10,000cps) Grade 3 - Non-Sagging Consistency
Class A - For use above 32 F (0 C) Class B - For use above 40 F (4.5 C) Class C - For use above 60 F (15.5 C) This product is also used as coat steel rebar to improve adhesion and vibration resistance when concrete is poured around same. In all EAS-8 Epoxy Adhesive Systems, Part A has a small amount of white pigment and Part B has a small amount of black pigment to aid the user in preparing a thorough mixture. Cured (hard surfaces) may be damp (but not wet). SPECIFICATIONS: With proper selection of type, grade, and class, EAS-8 Systems will meet all of the following specifications: ANSI/ASTM C881-78 MMM-B-350 (Canceled March 1979 in lieu of the above) CRD-C-590-74 Corps of Engineers CRD-C-591-73 Corps of Engineers Section 9.26.1 Type I & II, Washington State Department of Highways State of California Specification 804D-01F-03 MODIFICATIONS FOR BETTER WORKING AND HANDLING PROPERTIES: QCM has done considerable testing to provide improved products to over come specific problems encountered by users on the job: Our low temperature curing adhesive EAS-8 (Grade 1, Class A ) is ideal for work in winter climates because of it's easy to pour viscosity at cold temperatures. It meets Type 1, 2 and 3 requirements. (see above) Our high application temperature type EAS-8 (Grade 2, Class C ) will give a much longer open time (8-10 hours at 72 F). Successful wet-to-dry concrete bonds are obtained only if the adhesive is still tacky (has not exceeded its "open time"). This also meets Type 1, 2 and 3 requirements. IMPORTANT NOTE: For every 18 F rise in temperature, properties such as pot life, cure speed and open time will be cut approximately in half. Surfaces must be clean and sound. Laitance should be removed by scarifying or sand blasting. Metals should be cleaned or blasted to "bright" metal. Clean up tools before epoxy is hardened with MIBK, MEK, or other recommended blends. ***SAFETY READ BEFORE USING*** CAUTION: Epoxy resins contain irritants which can affect the skin, eyes, and respiratory system. Persons handling these materials should use appropriate protective clothing, including rubber or plastic gloves. If an epoxy resin should come in contact with the skin, the resin should immediately be removed with a dry cloth or paper towel. The skin area should then be washed thoroughly with soap and water. Solvents should not be used as they carry the irritant into the skin. Cured epoxy resins are innocuous. STORAGE TEMPERATURE: DO NOT STORE PRODUCT BELOW 50 F or CRYSTALLIZATION MAY OCCUR. In such case, call for technical assistance 1-800-321- 0170. PHYSICAL PROPERTIES AND PERFORMANCE DATA:
MIN CURE TEMP POT LIFE (1) OPEN TIME (2) MIX RATIO GRADE 1, CLASS A 32 Deg. F 20 mins 2 hours 2A:1B EAS-8 TYPE I, II & III GRADE 2, CLASS C 60 F 30-35 MIN 8 - 10 HRS 2A:1B EAS-8 TYPE I, II & III
VISCOSITY WT/GAL STATE OF CURE AT 72 Deg. F (3) 77 Deg. CPS PA PB 1HR 2HR 4HR 8HR 1DAY 7DAY GRADE 1, CLASS A PA PB 9.5 10.0 SOFT MED FIRM A65 D-64 D-65 EAS-8 TYPE I, II & III 1700 1300
GRADE 2, CLASS C 7500 950 9.8 10.2 LIQ LIQ GEL A-50 D-79 D-79 EAS-8 TYPE I, ll & lll
ARIZONA SLANT SHEAR (4) COMPRESSIVE (5) FALLING BALL(6) TENSILE TENSILE IMPACT GRADE 1, CLASS A 1296 psi 890 psi 10 ft lbs EAS-8 TYPE I, II & III 7 days (7 days)
GRADE 2, CLASS C 1331 psi 718 psi 10 ft lbs EAS-8 TYPE I, II & III (7 days) (14 days)
TEST METHODS 1.) A one pound mix (parts A & B), was used with material at 72 F propr to testing. 2.) Open Time-Kraft paper method: Freshly mixed adhesive was spread approximately 1/16" thick. Then, at regular time intervals, a strip of craft paper (brown paper bag) was lightly rubbed into the surface of the adhesive and immediately peeled off. If at least 80% of the paper did not have adhesive on it, open-time was considered ended. 3.) State of Cure Vs. Time: Mixed material was poured in a casting block 2.5 " in diameter by 3/16" thick. Subjective judgements were made until product was hard enough to measure with a Shore A or Shore D durometer. 4.) Arizona Slant Shear Tensile: Tests were run by an independent test lab in Seattle in accordance with the Washington State Department of Highways method 405-A. This correlates with the methods of ANSI/ASTM C 881-78. 5.) Compressive Shear Strength: Same as item 4, except method 404-A. 6.) Falling Ball Impact Strength; A3/16" thick by 2.5" diameter casting was cured 7 days at 72 F. Then a 1# round steel ball was dropped from increasing heights until either the sample cracked or the height of the falling ball direction tube was exceeded. SHELF LIFE: Guaranteed six (6) months when stored in sealed containers at temperatures between 50-90 F. Part A subject to crystallization when stored in intermittent cool temperatures for prolonged periods. SAFETY: See MSDS for all enquiries e-mail roy@qcminds.com
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