CONCRETE COATINGS AND MEMBRANES SECTION 104 5
Moisture Vapor Transmission ASTM D1653 Minimum 98% in relation to uncoated specimen Absorbed Chloride NCHRP 244 Series IV Southern Exposure Minimum 95% reduction Water Absorption NCHRP 244 Series II Minimum 80% reduction Depth of Penetration OHD L -40 0.15” minimum Total Solids Content ASTM D5095 40% minimum
The dye must not remain visible more than 7 calendars days after application of the material.
1045.4High Molecular Weight Methacrylate Sealer.
coat. Use a prime coat resin that has a maximum volatile content of 30 percent when tested in accordance with ASTM D2369 before adding initiator. The resin m ust also conform to the following: Table 1045.4 -1. High Molecular Weight Methacrylate (HMWM) Resin Properties Property Requirement Test Method Viscosity* (Brookfield RVT with UL adapter, 50 RPM at 77ºF) 25 cps, maximum ASTM D2196 Specific Gravity* (at 77ºF) 0.90, minimum ASTM D1475 Flash Point* (oF) 180 minimum ASTM D1310 Vapor Pressure* (at 77ºF) 0.0193 PSI maximum ASTM D323 Tack Free Time (minutes at 77ºF) 400 min. maximum ASTM C679 PCC Saturated Surface -Dry Bond Strength (at 24 hrs. at 70±1ºF) 700 PSI minimum California Test CT551, Part 5 *Tested before adding initiator .
separately from the resin, do not mix the metal drier directly with the peroxide as a violent exothermic reaction will result. Store the containers in a manner tha t will not allow leakage or spillage from 1 material to contact the containers or material of the other.
1045.5Membranes.
CONCRETE COATINGS AND MEMBRANES SECTION 104 5 699 A. Provide a waterproofing asphaltic membrane consisting of a woven or non -woven, needle punched composite membrane with a minimum thickness of 60 -mils. Sandwich woven fiberglass reinforcement or non -woven, needle punched polypropylene between rubberized asphalt compound or adhesive membrane. The materials must have sufficient adhesive property or be applied with have primer tack coat. Use primer/tac k adhesive materials that maintain compatibility with the asphaltic membrane. Use per manufacturer’s recommen dation.
Table 1045.5 -1. Traffic Bearing Membrane Requirements Property Test Method Standard Strip Tensile ASTM D882 50 lb./in min Puncture Resistance ASTM E154 200 lbs. min Permeance ASTM E96 Method B 0.10 perms (max) Pliability ASTM D146 No crack or split Elongation ASTM D882 50% minimum
Table 1045.5 -2. Non -Traffic Bearing Membrane Requirements Property Test Method Standard Strip Tensile ASTM D 882 50 lbs./in min Puncture Resistance ASTM E 154 40 lbs. min Permeance ASTM E 96 Method B 0.05 perms (max) Pliability ASTM D 146 No crack or split
1045.6Aesthetic Stain
resistant, weather resistant, and breathable. Provide a stain that complies with all local VOC regulations.
Table 1045.6 -1. Aesthetic Stain Composition Property Specification Requirement Solids Content by Weight ASTM D2832 30% Minimum Mildew Resistance FED Test Method STD 141 Method 6271.2 Resistant Weather Resistance ASTM G7 Passing at 2 years Color AMS -STD-595A Per contract Drying time (to touch) ASTM 1640 2 hours minimum CONCRETE COATINGS AND MEMBRANES SECTION 104 5 700 Drying time (to recoat) ASTM 1640 24 hours minimum
1045.7Li quid Membrane -Forming Compounds for Curing
ASTM C309. Apply curing compound at the manufacturer's recommended rate of application. In the absence of manufacturer's recommendations, apply until the original col or of the concrete is effectively obscured by a uniform white appearance.
CONCRETE OVERLAY MATERIALS SECTION 1046 701 SECTION 1046 — CONCRETE OVERLAY MATERIALS
1046.1Latex Modified Concrete.
1046.1.1 Materials.
which all stabilizers have been added at the point of manufacture. Latex modifier must be homogeneous and uniform in composition. 1046.1.2 Mix Design.
placement.
Publication 211.1) to the engineer to meet limits shown in Table 1046.1 -1. Mix design submission must include:
components and mitigation steps in accordance with Section 1022.3.2.B.
based on a 28 -calendar -day cure. Table 1046.1 -1. Mix Design Requirements Property Latex Modified Concrete Mix Formulated Latex - Gallons/Sack of Cement 3.50 Percent of Fine Aggregate as percent of Total Aggregate by Weight 50 - 60 * Weight Ratio of Cement: Fine Aggregate: Coarse Aggregate Dry Basis (Aggregate Specific Gravity = 2.65) 1.0:2.5:2.0 CONCRETE OVERLAY MATERIALS SECTION 1046 702 Property Latex Modified Concrete Mix Air Content - Maximum Percent of Plastic Mix 6.5% ** Slump (inches) 4 - 6 Water - Cement Ratio 0.40 Max. Minimum Compressive Strength @ 28 calendar days 4,000 PSI *The dry weight ratios are approximate and should produce a workable mix but due to gradation changes may be adjusted within limits. The fine aggregate ratio may be increased by as much as 0.2 if the coarse aggregate is reduced by an equivalent volume. **Measure the slump 4 to 5 minutes after discharge from the mixer. Do not disturb the mix during this waiting period.
before continuing the work. 1046.1.3 Acceptance Testing.
tested according to AASHTO T277 at 28 calendar days.
1046.2Polyester Polymer Concrete Overlay.
1046.2.1 Materials.
when tested in accordance with AASHTO Test Method T335.
and T85.
Table 1046.2 -1. Polyester Polymer Concrete Overlay Gradation Sieve Size Percent Passing 3/8” 100 No. 4 62 – 85 No. 8 45 – 67