886Epoxy Resin Adhesives

886.1General Description

This section includes the requirements for the most common epoxy adhesives used in highway construction or maintenance. 886.1.01 Related References

General Provisions 101 through 150.

AASHTO T 237 ASTM 2240 Federal Hazardous Products Labeling Act GDT 58 QPL 15 NTPEP Committee Work Plan for Evaluation of Pavement Markers and Adhesives (RPM-15)

886.2Materials

886.2.01 Epoxy Resin Adhesives

miscellaneous materials such as metals.

resistant or protective coating on hardened Portland cement concrete or asphaltic concrete.

applications. Either mix this epoxy by machine to the proper ratio or package it in a two-component cartridge with a mixing nozzle that thoroughly mixes the two components as they are dispensed. Use a nozzle at least 8 in. (200 mm) long.

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Ensure that the viscosities of the separate components are similar and conducive to easy blending of the epoxy adhesive system.

Clearly label each container of the separate components of an epoxy adhesive system with the following information: • Specification number and type • Component designation (A or B) • Manufacturer’s batch number—a batch is a single charge of all components in a mixing chamber • Expiration date (shelf life for separate components in original containers) • Mixing ratio and directions (by volume or weight as designated by the manufacturer) • Potential hazards and precautions according to the Federal Hazardous Products Labeling Act

Ensure that the mixed epoxy adhesive system meets the applicable requirements of Table 1.

plowable), snow plowable, temporary and chip seal raised pavement makers and adhesives.

adhesives.

indicting testing was conducted by NTPEP.

General Provisions 101 through 150.

Each epoxy adhesive system shall meet the requirements of this Section. If the Department qualifies or disqualifies a system for one of the types specified, it will not affect the qualification or disqualification of any other type. The Department will reject any epoxy adhesive system that meets all the requirements of this Section, but fails in actual use. For a list of sources, see QPL 15.

General Provisions 101 through 150. 1708 1708 1708

TABLE 1 - MIXED EPOXY ADHESIVE SYSTEMS REQUIREMENTS Type Designation Property I-R I-S II III IV V VI VII VIII Test Method Pot Life at 77 °F (25 oC) (minutes) 6- 8- 30* 10- 30- 60 10- 30- 60 — GDT 58 Elongation at 77 °F (25 oC) (percent) — — — — 30** — 30** — 5% Max. GDT 58 Bond Strength, psi (MPa) at 1 hr and 77 °F (25 oC) at 3 hr and 77 °F (25 oC) at 24 hr and 77 °F (25 oC) 180 (1.2) — 400 (2.8) — 180 (1.2) 400 (2.8) — — 400 (2.8) — — 400 (2.8) — — 250 (1.7) — — 400 (2.8) — — 250 (1.7) — — — — 250 (1.7) 400 (2.8) GDT 58 Shore D Hardness at 77 °F (25 oC) — — — — 75 Max . — 35- 65 — — ASTM: 2240 SAG Test — — — — — — — — No Sag AASHTO: T 237 Wet Bond Test, psi (MPa) — — 400 (2.8) — — — — — — AASHTO: T 237 Section 31 Shelf Life*** (months) — Note: * Values are minimums except where a range is shown, or otherwise noted. ** Epoxy adhesive system only. *** For separate components in original containers. 1709 1709 1709