95 EPOXY
95-1 General
95-1.01 General
95-1.01A Summary
95-1.01B Definitions
kit: Two proportioned epoxy components packaged to gether.
95-1.01C Submittals
Submit a certificate of compliance for epoxy.
95-1.01D Quality Assurance
Reserved
95-1.02 Materials
95-1.02A General
Furnish epoxy as 2 components and mix them together at the job site.
95-1.02B Packaging, Labeling, and Sto ring
Each epoxy component must be packaged in containers of a size proportional to the amount of that component in the mix so that 1 container of each component is used in mixing 1 batch of epoxy. The containers must be sealed to prevent leakage and must n ot react with the components. Each container must be clearly labeled by the epoxy manufacturer with:
1.ASTM C881/C881M class and type
2.Component designation (A or B)
3.Manufacturer's name
4.Manufacture date
5.Batch number
6.Expiration date
7.Directions for use
8.Warnings or precautions required by State and federal laws and regulations Store epoxy components at temperatures greater than 35 degrees F.
95-1.02C Epoxy Binder
Epoxy binder must be a low -viscosity epoxy formulated primarily for use in:
1.Making HS epoxy concrete and epoxy mortar
2.Pressure grouting cracks in concrete For load -bearing applications, the epoxy must comply with ASTM C881/C881M, Type IV, Grade 1, Class B or C. For non -load-bearing applications, the epoxy must comply with ASTM C881/C881M, Type I, Grade 1, Class B or C. Use Class B whenever the surface temperature is from 40 to 60 degrees F. Use Class C whenever the surface temperature is above 60 degrees F. If epoxy binder is used for HS epoxy concrete or epoxy mortar, thoroughly mix the components before adding aggregate . The mix proportions must be 1 part epoxy to 4 parts aggregate by volume. Aggregate must be clean and have a moisture content of not more than 0.50 percent when tested under California Test 226.
95-1.02D Epoxy Adhesive for Bonding Freshly Mixed Concrete to Hardened Concrete
Epoxy adhesive for bonding freshly mixed concrete to hardened concrete must comply with ASTM C881/C881M, Type V, Grade 2, Class B or C. SECTION 95 EPOXY Use Class B whenever the surface temperature is from 40 to 60 degrees F or if a faster cure is required. Use Class C whenever the surface temperature is above 60 degrees F.
95-1.02E Epoxy Adhesive for Pavement Markers
Epoxy adhesive for bonding pavement markers to concrete and HMA must comply with ASTM C881/C881M, Type IV, Grade 3, Class B or C except t he gel time for epoxy adhesive may be less than 30 minutes. Use Class B whene ver the surface temperature is from 40 to 60 degrees F. Use Class C whenever the surface temperature is above 60 degrees F.
95-1.02F Reserved
95-1.02G Epoxy Sealant for Inductive Loops
The epoxy for sealing inductive loops and leads imbedded in HMA and concrete must comply with ASTM C881/C881M, Type I, Grade 2.
95-1.02H Epoxy Resin Adhesive for Pressure Injection Grouting of Concrete Pavement
Epoxy resin pressure injected into concrete must comply with ASTM C881/C881M, Type IV, Grade 1 except the epoxy must have a minimum bond strength of 3,000 psi at 14 days.
95-1.03 Construction
Mix and apply the epoxy under the manufacturer's instructions. Do not use an epoxy component if any of the following occur:
1.Evidence of crystallization
2.Permanent increase in viscosity too thick to be adequately mixed
3.Settled pigments that cannot be readily dispersed with a paddle
4.Component is older than the manufacturer's recommended expiration date Thoroughly stir each epoxy component before mixing them together. Do not mix partial kits. Do not add solvents. Automatic mixing equipment must have positive displacement pumps and be capable of metering a 2 - component mix in the specified ratio ± 5 percent by volume of either component. Mix the 2 epoxy components until no trace of black or white streaks is present in the mixed epoxy. Clean surfaces to receive the epoxy of rust, paint, grease, asphalt, loose, and deleterious material. Apply the epoxy and place materials to be b onded before the epoxy starts to thicken. Do not use epoxy that has exceeded its working life. Prime surfaces with epoxy immediately before placing epoxy concrete or mortar. When bonding freshly -mixed concrete to hardened concrete, coat the blast -cleaned c oncrete surface with epoxy using a brush or roller. Place freshly -mixed concrete while the epoxy is tacky. Apply new coat of epoxy if the epoxy sets.
95-1.04 Payment
Not Used
95-2 95-8 Reserved
Source: California Standard Specifications, 2024 Edition. Pages 1329–1330 of 1,372.