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95-1.02 SAMPLING AND TESTING <br /> • Epoxy shall not be used prior to sampling and testing unless its use is permitted prior to sampling and testing in <br /> conformance with the provisions in Section 6-1.07,"Certificates of Compliance." <br /> • Tests will be conducted in conformance with the latest test methods of the American Society for Testing and <br /> Materials,and California Test Methods in use by the Transportation Laboratory. <br /> • Epoxy components shall be formulated to maintain the specified properties for a minimum of one year. The <br /> Engineer may require additional testing of any epoxy component that has not been used within one year of manufacture. <br /> 95-1.03 PACKAGING,LABELING AND STORING <br /> • Each component shall be packaged in containers of size proportional to the amount of that component in the mix so <br /> that one container of each component is used in mixing one batch of epoxy. The containers shall be of such design that all of <br /> the contents may be readily removed and shall be well sealed to prevent leakage. The containers and labeling shall meet U.S. <br /> Department of Transportation Hazardous Material Shipping Regulations, and the containers shall be of a material, or lined <br /> with a material,of such character as to resist any action by the components. Each container shall be clearly labeled with the <br /> ASTM Designation: C881 Class and Type; designation (Component A or B); manufacturer's name; date of manufacture; <br /> batch number (a batch shall consist of a single charge of all components in a mixing chamber); all directions for use (as <br /> specified elsewhere)and such warning or precautions concerning the contents as may be required by State or Federal Laws <br /> and Regulations. The manufacturer of the finished epoxy components shall furnish a Certificate of Compliance in <br /> conformance with the provisions in Section 6-1.07, "Certificates of Compliance," and a copy of the label for each material. <br /> The certificate shall include a list,by Title and Section,of the State and Federal packaging and labeling laws and regulations <br /> that the manufacturer has complied with. <br /> • Attention is directed to the characteristic of some epoxy components to crystallize or thicken excessively prior to use <br /> when stored at temperatures below 2°C. Any material which shows evidence of crystallization or a permanent increase in <br /> viscosity or settling of pigments which cannot be readily redispersed with a paddle shall not be used. <br /> 95-1.04 DIRECTIONS FOR USE <br /> • At the time of mixing, components A and B shall be at a temperature between 15°C and 30°C, unless otherwise <br /> specified. Any heating of the adhesive components shall be done by application of indirect heat. Immediately prior to <br /> mixing, each component shall be thoroughly mixed with a paddle. Separate paddles shall be used to stir each component. <br /> Immediately prior to use, the 2 components shall be thoroughly mixed together in the specified ratios. No solvent shall be <br /> added to any epoxy. <br /> • After mixing, epoxies shall be placed in the work and any overlaying or inserted material which is to be bonded to <br /> the work by the epoxy shall also be placed before thickening of the epoxy has begun. Surfaces upon which epoxy is to be <br /> placed shall be free of rust, paint, grease, asphalt, and loose and deleterious material. When epoxy is used as a binder to <br /> make epoxy concrete or mortar,the 2 components of epoxy shall be thoroughly mixed together before the aggregate is added <br /> and,unless otherwise specified,the mix proportions shall consist of one part of binder to approximately 4 parts of aggregate, <br /> by volume. Aggregate for use in epoxy concrete and mortar shall be clean and shall have a moisture content of not more than <br /> 0.50-percent when tested by California Test 226. Surfaces against which epoxy concrete and mortar are to be placed shall be <br /> primed with a coat of the epoxy used just prior to placing the concrete or mortar. <br /> 95-2 TYPES OF EPDXIES <br /> 95-2.01 BINDER(ADHESIVE),EPDXY RESIN BASE <br /> Classification: <br /> • This specification covers a low viscosity epoxy formulated primarily for use in making high-strength epoxy concrete <br /> and epoxy mortar and in pressure grouting of cracks in concrete. For load bearing applications, use ASTM Designation: <br /> C 881, Type IV, Grade 1, Class B or C. Class B or C shall be used depending on the substrate and ambient temperatures. <br /> Use Grade B for atmospheric and surface temperatures as low as 4°C. Use Class C when temperatures are 15°C or higher. <br /> For non-load bearing applications use ASTM Designation: C881, Type I, Grade 1, Class B or C. Apply no thicker than <br /> recommended by the manufacturer. Thick sections of this epoxy are not suitable for use in freeze thaw environments. In a <br /> freeze-thaw environment,increase the aggregate loading to improve the properties of the epoxy concrete. <br /> Directions for Use: <br /> • Mix in conformance'with the manufacturer's written recommendations. No more material shall be mixed than can <br /> be used within the-pot-life from the time mixing operations are started. <br /> Contract No. 10-OM7104 <br /> 97 <br />