for Highway Construction Page 416 of 715 SECTION 552 - RESERVED for Highway Construction Page 417 of 71 5 SECTION 553 – EPOXY OVERLAY
553.01 Description.
Prepare and apply an epoxy and aggregate overlay on the concrete bridge deck surface area between the curb faces and from the beginning to the end of the bridge and on the approach slabs as specified. S ubmit the following:
1.Submit the name and phone number of the epoxy material manufacturer’s technical representative at the preconstruction meeting.
2.At least 10 calendar days before the epoxy overlay placement , submit:
a.The epoxy materials manufacturer’s written mixing instructions, safety data sheets, independent test re sults, and a certificate of compliance stating the epoxy materials meet the requirements listed in Table 553.02- 1.
b.Independent test results and a certificate of compliance stating the aggregates meet the requirements listed below in Tables 553.02- 2 and 553 .02-4 or in Tables 553.02- 3 and 553.02 -4 and that it is compatible with the epoxy material.
553.02 Materials.
Provide an epoxy resin base and hardener that is a modified Type III, 2-component system that meets the requirements of ASTM C881, Grade 1, Classes B and C. Store the epoxy in accordance with the manufacturer’s specifications. Ensure epoxy properties meet Table 553.02- 1: Table 553.02- 1 – Epoxy Requirements Property Requirement Test Method Gel Time ≥ 15 to ≤ 45 ASTM C881, Paragraph 11.2 modified Tensile Strength (neat) ≥ 2,000 psi to ≤ 5,000 psi at 7 days ASTM D638 Tensile Elongation (neat) ≥ 40% to ≤ 80% at 7 calendar days ASTM D638 Viscosity > 7 to < 25 poises ASTM D2393, Brookfield RVT Spindle No. 3 at 20 rpm Minimum Compressive Strength at 3 hours 1,000 psi at 75 °F ASTM C579 modified (with plastic inserts), mixed with aggregate Minimum Compressive Strength at 24 hours 5,000 psi at 75 °F ASTM C579 modified (with plastic inserts), mixed with aggregate Minimum Adhesion Strength at 24 hours 250 psi at 75 °F ACI 503R, Appendix A, VTM 92 Permeability to chloride ion at 28 days 100 coulombs maximum AASHTO T 277
Source: Idaho Standard Specifications for Highway Construction, 2023 Edition. Pages 452–452 of 768.