DMS-6300, Waterproofing

Transcription

1 Overview (Formerly D , Waterproofing). Effective Date: August July This Specification governs the sampling, testing, composition and quality of the waterproofing materials below: butyl rubber membrane asphalt for mopping above ground asphalt for mopping below ground asphaltic primer treated cotton fabric self-adhering polyethylene coal tar modified urethane rubberized asphalt with preformed board membrane asphalt plank asphalt mat rubberized asphalt with plastic film asphaltic panels plastic cement cold asphalt-base emulsion. Sampling and Testing Sampling and testing shall be in accordance with the CST/M&P s Manual of Testing Procedures and ASTM procedures cited herein. Costs of Sampling and Testing Costs of sampling and testing are normally borne by the Department; however, the costs of sampling and testing of materials failing to conform to the requirements of this Specification shall be borne by the contractor or supplier. Departmental Material Specifications 1 8/98-7/04

2 Costs of sampling and testing failing material shall be assessed at the rate established by the Director of CST/M&P and in effect at the time of testing. Amounts due the Department for conducting such tests will be deducted from monthly or final estimates on contracts or from partial or final payments on direct purchases by the state. Materials The various types of waterproofing materials covered by this Specification are set forth in the following subsections. Butyl Rubber Membrane Butyl rubber membrane shall be furnished in rolls of sufficient length and width to cover the area shown on the plans with a minimum amount of splicing. The membrane shall have a thickness of 1.5 millimeters (0.060 inches) (-0, +10%), unless otherwise specified on the plans. The membrane shall be manufactured from isobutylene-isoprene rubber and shall, in finished form, conform to the following requirements. Butyl Rubber Membrane Color Black Specific Gravity (ASTM D 297) 1.20 ± 0.03 Tensile Strength (ASTM D 412) kpa (psi) 8273 (1200) minimum 300% elongation (ASTM D 412) kpa (psi) 4136 (600) minimum Elongation (ASTM D 412) % 300 minimum Tear Resistance (ASTM D 624, die B) N/m (lb./in.) 21,888 (125) minimum Shore A Hardness (ASTM D 2240) 60 ± 10 Ozone Resistance (ASTM D 1149) 70 hr, 38 C (100 F), 50 PPHM No cracks ozone, 20% elongation Heat Aging, C (240 F) Tensile Strength, Modulus, Elongation, Tear Change in Mass (ASTM D 471) Water Immersion, C (74 F), wt % ASTM Oil No. 1, C (212 F), wt % Ozone Resistance Conformance 60% minimum of Original 1.0 maximum 15.0 maximum Manufacturer s Certification Adhesive Adhesive and splicing cement for butyl rubber membrane installation shall be as recommended by the membrane manufacturer. Departmental Material Specifications 2 8/98-7/04

3 The adhesive shall remain elastic at temperatures to 4.4 C (40 F) and the splicing cement shall be a self-vulcanizing butyl rubber compound. Butyl gum type shall be black, unvulcanized butyl rubber with a 0.20 millimeters (8 mil) polyethylene film backing, total thickness 0.76 ± 0.1 millimeters (30 ± 4 mil). Asphalt for Mopping Above Ground Asphalt for mopping above ground shall be homogenous, free from water and shall meet the requirements of ASTM D 449, Type II, with the following additional requirements. Mopping Asphalt Loss on 163 C (325 F) 50 g for 5 hr, wt % Change in Penetration after Heating 0.5, maximum 80% of Original, minimum Asphalt for Mopping Below Ground Asphalt for mopping below ground shall be homogeneous, free of water and shall meet the requirements of ASTM D 449, Type I. Asphaltic Primer Asphaltic primer shall be free of water and shall meet the requirements of ASTM D 41. Treated Cotton Fabric Treated cotton fabric shall consist of high-grade cotton cloth saturated thoroughly and uniformly with asphalt complying with one of the types specified in ASTM D 449. The roll shall be capable of being unrolled at ambient temperatures without sticking together or being damaged. Treated cotton fabric shall meet the requirements of ASTM D 173. Self-Adhering Polyethylene The self-adhering polyethylene shall consist of a minimum 0.1 millimeter (4 mil) thickness of polyethylene, coated on one side with a layer of adhesive rubberized asphalt and a protective membrane for the adhesive surface until ready for use. The composite sheeting shall have a tensile strength of 3152 Newton/millimeter (18 pounds/inches) of width when tested in accordance with ASTM D 5034, Method 1C, and furnished in rolls of sufficient width and length to satisfy job requirements. Departmental Material Specifications 3 8/98-7/04

4 Material shall be black in color and shall have a net thickness not less than 1.5 millimeters (60 mil) excluding the protective release paper membrane. Coal Tar Modified Urethane Coating This material shall be designed so that it will cure to form a tough, flexible coating without addition of a catalyst. The material shall be free of any lumping, skinning, or separation of pigments or fillers which cannot be easily redispersed by stirring. When tested in accordance with Test Method Tex-615-J, Testing Single Component Polyurethane Waterproofing, the coating shall meet the following requirements. Coal Tar Modified Urethane Coating Brookfield Viscosity, 25 C (77 F) Pa-s (Poises) 50 (500) maximum Peel Strength, N/m (lb./in.) 1751 (10) minimum Wet Strength, Pa (psi) 1034 (150) minimum Additional s The coating shall be resistant to flow on vertical surfaces such that no flow or sag is evident for a 0.76 millimeters (30 mil) thickness. Adhesion between coats shall have no tendency to separate. Rubberized Asphalt with Preformed Board Membrane The waterproofing membrane shall be self-adhering and shall consist of a multi-layer preformed board and a 1.5 millimeters (0.060 inches) minimum thickness of rubberized asphalt with protective release paper. A cold applied asphaltic primer or mastic shall be supplied, and for sealing joints, the membrane system shall include a 152 millimeters (sic [6] inches) wide reinforced adhesive gusset tape of nominal 1.6 millimeters (1/16 inches) thick elastomeric membrane similar to the waterproofing membrane proper. The rubberized asphalt with preformed board membrane shall meet the following requirements. Rubberized Asphalt with Preformed Board Membrane Water Absorption (ASTM D 1751) wt % 0.25 maximum Puncture Resistance (ASTM E 154) N (lb.) 178 (40) minimum Pliability of Rubberized Asphalt (ASTM D 146) 180 bend Unaffected Departmental Material Specifications 4 8/98-7/04

5 Asphalt Plank Rubberized Asphalt with Preformed Board Membrane Water Absorption (ASTM D 1751) wt % 0.25 maximum over 6.4 millimeters (1/4 inches) mandrel at -18 C (0 F) Asphalt plank shall be a mixture of asphalt, mineral matter, and organic fiber (excluding wood fiber) and shall meet the requirements of ASTM D 517, for plain asphalt plank. The plank shall be uniform in width and thickness with straight sides and square edges. Dimensions The standard widths and lengths for Asphalt Planks shall be as follows. Asphalt Plank Standard Dimensions Thickness Width Length 12.7 mm (1/2 in.) 305 mm (12 in.) 1.22 m (48 in.) 25.4 mm (1 in.) 203 mm (8 in.) 1.83 m (72 in.) 25.4 mm (1 in.) 254 mm (10 in.) 1.52 m (60 in.) Exceptions Shorter lengths of 25.4 millimeters (one [1] inch) thick plank may be acceptable to a minimum of 0.91 meter (36 inches). Protective course asphalt planking shall have a minimum 25.4 millimeters (one [1] inch) thickness using one or more layers. Asphalt Mat Asphalt mat shall consist of a core of blended air blown asphalt, organic fibers and mineral fillers, a covering of asphalt-saturated felts and an exterior coating of weather-resistant oxidized asphalt. The mats shall be furnished in widths of 1.2 meters (four [4] feet) and lengths not less than 2.4 meters (eight [8] feet), except for end pieces cut to the length required. They shall be uniform in thickness and free from imperfections that may affect serviceability. The mat surfaces shall be dusted with mica, talc or similar materials to prevent sticking or damage to them during shipment or handling. The thickness of the mats shall be 12.7 millimeters (1/2 inch) or 25.4 millimeters (one [1] inch). Departmental Material Specifications 5 8/98-7/04

6 Finished thickness of asphalt mat shall not be less than 25.4 millimeters (one [1] inch) when used as protective course. Rubberized Asphalt with Plastic Film This material shall consist of preformed rubberized asphalt and plastic film with primer and cold applied rubberized asphalt mastic and asphaltic panel protection. Rubberized asphalt with plastic film shall meet (as per ASTM D 1228, [Discontinued]) the following requirements. Rubberized Asphalt with Plastic Film Testing Thickness, mm (in.) Permeability (ASTM E 96, Method B) Water Absorption (ASTM D 1228) % by weight Pliability (ASTM D 146) Cure 7 days dry, 7 49 C (120 F) 7 days water immersion Puncture Resistance (ASTM E 154) Newton (pound) 1.5 (0.060) minimum 0.1 maximum 0.25 maximum Unaffected 178 (40) minimum Acceptance The manufacturer shall furnish certification that materials meet specification requirements. A sample, minimum size 305 x 610 millimeters (12 x 24 inches) shall be furnished for testing, when required by the Engineer, from each production run of membrane to be supplied. Asphaltic Panels Asphaltic panels shall be either 9.5 or 12.7 millimeters (3/8 or 1/2 inch) thick, not less than 0.91 meter (three [3] feet) wide by 1.8 meters (sic [6] feet) long and shall meet the following requirements. Manufacture Each panel is formed as a five (5) layer member, including a core of a selected blend of asphalt and inorganic mineral filler particles, a bottom reinforcing cover of asphalt-saturated felt and on the top, a cover of asphaltsaturated felt of a fiberglass mat that is weather-coated and has a bondbreaking film or coating. Asphalt and inorganic mineral filler particles shall be blended to form the core, with the asphalt forming the matrix of the blend to carry the particles. The mineral filler particles function to impart increased density and enhance stiffness and body in the core. Departmental Material Specifications 6 8/98-7/04

7 The inorganic mineral filler particles constitute an aggregate bound in the asphalt matrix that will permit points of ballast rock to penetrate a short distance into the core to secure a good seating position. The aggregate will then resist further penetration and will support the ballast rock. Workmanship The asphaltic panel shall be free from defects affecting its serviceability and appearance. It shall have straight edges and square corners. Asphaltic panels shall have the dimensions specified or shown on the plans. Tolerance of 1.6 millimeters (1/16 inch) in thickness, ± 3.2 millimeters (1/8 inch) in width and ± 6.35 millimeters (1/4 inch) in length shall be permitted. The following table list other properties to be met. Asphalt Panel Weight 9.5 mm ([3/8 in.] thickness), Pa (lb./sq. ft.) Weight 12.7 mm ([1/2 in.] thickness), Pa (lb./sq. ft.) Water Absorption (ASTM D 545), wt % Thickness of Asphalt Weather-coating, mm (in.) Asphalt-Saturated Felt Liner Weight, Pa (lb./sq. ft.) Core Composition (ASTM D 545): Asphalt content, weight % Resistance to Decay (ASTM E 154) Flexibility (see Flexibility Test below) Brittleness at -1-6 C (30-43 F) (ASTM D 994) Heat Distortion (ASTM D 994) mm (in.) 124 (2.60) minimum 168 (3.50) minimum 1.0 maximum 0.51 (0.020) minimum 7.2 (0.15) maximum minimum No Effect No Cracking or Breaking No Cracking or Breaking 7.94 (0.3125) maximum Flexibility Test Three specimens, each 76 x 305 millimeters (3 x 12 inches) shall be conditioned at 25 ± 2 C (77 ± 5 F) for not less than two (2) hours immediately prior to being subjected to test. Place each specimen with the 305 millimeters (12 inches) dimension perpendicular to and centered over the axis of a horizontal cylinder having a diameter of 483 ± 25 millimeters (19 ± 1 inches). Clamp one end and grasp the other end of the sample and bend around the cylinder at a uniform rate to complete the bend in 60 ± 10 seconds so that the specimen is in full contact with the surface of the cylinder. Examine for any cracking or breaking of the sample. Inspection Departmental Material Specifications 7 8/98-7/04

8 Samples from each lot shall be examined for appearance, straightness of edges and squareness of corners and measured for width and length. The thickness shall be measured at four (4) locations using a micrometer having flat bearing surfaces at both contact points of not less than 6.35 millimeters (1/4 inch) diameter. The average of the readings shall be considered the thickness of the asphaltic panel. Plastic Cement Plastic cement shall be composed of semi-solid asphalt dissolved in a suitable volatile solvent and stiffened with mineral stabilizers and fillers. Plastic cement shall meet the requirements of ASTM D Cold Asphalt-Base Emulsion Cold asphalt-base emulsion shall consist of a nonvolatile organic base asphalt mixed with mineral fillers, asbestos fiber, or other suitable materials to form a quick setting mastic material capable of being applied and bonded to asphalt plank surfaces at temperatures of 10 C (50 F) or above. The cold asphalt base emulsion shall meet the following property requirements. Cold Asphalt-Base Emulsion Density (ASTM D 2939) kg/m 3 (lb./gal.) Residue by evaporation (ASTM D 2939), 24 hr, 105 C (221 F), wt % Water Content (ASTM D 244), wt % Final Set (ASTM D 2939), hr Flexibility (ASTM D 2939), 25 C (77 F), 12.7 mm (1/2 in.) Mandrel, 180 Water Resistance (ASTM D 2939) 1006 (8.4) minimum 50 minimum 50 maximum 24 maximum No Cracks No blisters, reemulsification or loss of adhesive Departmental Material Specifications 8 8/98-7/04