888Waterproofing Membrane Materials

888.1 General Description

This section includes the requirements for waterproofing materials that serve as a barrier between the concrete bridge deck and the overlay of asphaltic concrete. The membranes included herein are for bridge decks, pavement joints and cracks, and retaining wall joints.

888.1.01 Related References

A. Standard Specifications Section 106—Materials Certification B. Referenced Documents ASTM D 146 ASTM D 412 (Die C) ASTM D 882 (Method A) ASTM E 96 Procedure B ASTM E 154 GDT 69 QPL 22

888.2 Materials

888.2.01 Waterproofing Membrane Material for Bridge Decks

A. Requirements 1. Use a water-resistant primer adhesive that is supplied by the manufacturer of the membrane or other approved equal compatible with the membrane. 2. Use an approved sealant compatible with the membrane and primer as mastic. 3. Provide certified results from the manufacturer of the membrane system of the tests in Subsection 888.2.01.C. 4. Re-submit the certified test results each time the product’s formulation is changed. 5. For a list of sources, see QPL 22. B. Fabrication General Provisions 101 through 150. C. Acceptance Test the membrane system with GDT 69 and meet these requirements: Characteristic Requirement Bond No break in bond, curled edges, bubbles, or pinholes Water permeability Above 500,000 ohms/ft.² (5.4 megaohms/m²), measured indirectly in ohms per square foot (meter) Heat resistance Withstand 300 °F (150 °C) and retain an electrical resistance above 500,000 ohms/ft.² (5.4 megaohms/m²) Characteristic Requirement Resistance to aggregate penetration Retain an electrical resistance above 500,000 ohms/ft.² (5.4 megaohms/ m²) after granite chip creep damage test for 20 hours at 140 °F (60 °C) Resistance to freeze- thaw cycles After 10 cycles of freezing and thawing, the test membrane shall have the tensile strength of similar samples of the same membrane unfrozen Chemical resistance Remain intact and in good condition when immersed for 30 days in each of the following inorganic acids, alkalies, and salts: • 5% sulfuric acid • 5% hydrochloric acid • 5% sodium hydroxide • 25% sodium chloride • 25% calcium chloride Resistance to shear Have a shear resistance of 100 lbs. (45 kg) or pass the Department’s evaluation of where and how the shear failure took place. Waterproofing effectiveness The membrane system does not displace; retain an electrical resistance above 500,000 ohms/ft.² (5.4 megohms/m²) See QPL 22 for membranes that meet the requirements of this specification.

888.2.02 Waterproofing Membrane for Pavement Joints and Cracks

A. Requirements 1. Use waterproofing membrane that incorporates a high-strength, heat-resistant woven fabric embedded in a layer of self-adhesive rubberized asphalt. a. Ensure that the membrane contains at least 14 percent synthetic rubber by weight. b. Ensure that the combined amount of asphalt and plasticizer oils is at least 60 percent of the total weight of the membrane. The total weight of the membrane for this purpose does not include the weight of any reinforcement or fabric. 2. Get primer from the membrane manufacturer or some approved equal compatible with the membrane. 3. Use membrane with the following physical properties: Thickness of rubber-asphalt membrane 0.065 in. (1.65 mm) minimum Water permeability 500,000 ohms/ft.² (5.4 megaohms/m²) Breaking factor 50 lbs./in. (8.75 kN/m) minimum Heat resistance 300 °F (150 °C) minimum without membrane damage and retain minimum 500,000 ohms/ft.² (5.4 megaohms/ m²) resistivity Puncture resistance (mesh) 200 lbs. (900 N) minimum Elongation of mesh 15 to 60% minimum Pliability 1/4 in. (6 mm) Mandrel 180° bend at –15 °F, ± 2 °F (-26 °C, ± 1 °C) No cracks in the membrane B. Fabrication General Provisions 101 through 150. C. Acceptance 1. Test as follows: Test Method Water permeability GDT 69 Breaking factor ASTM D 882 (Method A) Heat resistance GDT 69 Puncture resistance ASTM E 154 Elongation of mesh ASTM D 882 Pliability ¼ in. (6 mm) mandrel, 180° bend at –15 °, ± 2 °F (-26 °, ± 1 °C) ASTM D 146 2. See QPL 22 for membranes that meet the requirements of this specification. 3. The Department will remove from the list any membrane that meets this specification but fails in actual use. D. Materials Warranty General Provisions 101 through 150.

888.2.03 Waterproofing Membrane for Retaining Wall Joints

A. Requirements 1. Use these waterproofing barriers for concrete and other masonry surfaces at locations shown on the plans. 2. Use waterproofing membrane that incorporates a cross-laminated, high density polyethylene film, adhered to a flexible, self-adhesive, rubberized asphalt. 3. Get primer from the membrane manufacturer or an approved equal compatible with the membrane. 4. Use membranes that meet the following requirements when tested with the required test method: Thickness 0.060 in. (1.5 mm) minimum Thickness of polyethylene film 0.004 in. (100 µm) minimum Tensile strength 250 psi (1.7 MPa) minimum Ultimate elongation 200% minimum Permeance-perms grains/ft.²/hr/in. Hg (ng/s· m² ·Pa) 0.1 (5.7) maximum Cycling over crack at –15 °F (–26 °C) No effect 100 cycles Puncture resistance 40 lbs. (180 N) minimum Pliability (180° bend over 1 in. (25 mm) mandrel at –25 °F (–32 °C)) No cracks 5. Submit a certification from the manufacturer that the physical properties of the membrane meet the specification according to Subsection 106.05, Materials Certification. B. Fabrication General Provisions 101 through 150. C. Acceptance Test as follows: Test Method Tensile strength ASTM D 412 (Die C) Ultimate elongation ASTM D 412 (Die C) Permeance ASTM E 96 Procedure B Puncture resistance ASTM E 154 Pliability ASTM D 146 Cycling over crack Apply and roll membrane across two primed concrete blocks with no separation between the blocks. Open and close the crack from 0 to 1/4 in. (6 mm). See QPL 22 for membranes that meet the requirements of this specification. D. Materials Warranty General Provisions 101 through 150.