Section_725_miscellaneous_materials_new.doc

Section 725

Section 725

Section 725 — MISCELLANEOUS MATERIAL

725.01 Water. Conform to the following:

(a) Water for mixing or curing cement concrete, mortar, or grout. Conform to AASHTO M 157. Potable water of known quality may be used without testing according to AASHTO T 26. Potable water is safe for human consumption as defined by the public health authority having jurisdiction.

(b) Water for planting or care of vegetation. Furnish water that is free of substances injurious to plant life such as oils, acids, alkalies, or salts.

(c) Water for earthwork, pavement courses, dust control, and incidental construction. Furnish water free of substances detrimental to the work.

725.02 Calcium Chloride, Calcium Chloride Flakes and Magnesium Chloride.

(a) Calcium chloride liquid. Conform to AASHTO M 144, type L for the specified concentration.

(b) Calcium chloride flakes. Conform to AASHTO M 144, type S, grade 1, 2, or 3, class A.

(c) Magnesium chloride. Furnish a brine solution conforming to the following:

(1) Magnesium chloride by mass 28% minimum

(2) Water by mass 72% maximum

(3) Specific gravity, AASHTO T 227

1.290 to 1.330

725.03 Lime.

(a) Lime for masonry. Furnish hydrated lime conforming to ASTM C 207, type N.

(b) Lime for soil stabilization and paving. Conform to AASHTO M 216.

725.04 Pozzolans. Conform to the following:

(a) Fly ash AASHTO M 295, class C or F

(b) Ground iron blast-furnace slag AASHTO M 302, grade 100 or 120

(c) Silica fume (microsilica)

AASHTO M 307

725.05 Mineral Filler. Conform to AASHTO M 17.

725.06 Precast Concrete Curbing and Wheelstops. Furnish units conforming to the following:

(a) Concrete Section 601

(b) Reinforcing steel Subsection 709.01

725.07 Clay or Shale Brick. Conform to one of the following:

(a) Sewer brick AASHTO M 91, grade SM

(b) Building brick AASHTO M 114, grade SW

725.08 Concrete Brick. Conform to ASTM C 55, grade N-I.

725.09 Concrete Masonry Units. Conform to one of the following:

(a) Load-bearing concrete masonry units

ASTM C 90

(b) Concrete masonry units for constructing

ASTM C 139

catch basins and manholes

(c) Nonload-bearing concrete masonry units

ASTM C 129

725.10 Cellular Concrete Blocks. Conform to ASTM C 936 or C 1319.

725.11 Precast Concrete Units and Accessories.

(a) Reinforced concrete manholes sections. Conform to AASHTO M 199

(b) Precast concrete barrier. Conform to ASTM C 825.

(c) Reinforced concrete crib wall members. Conform to ASTM C 915.

(d) Underground concrete utility structures. Conform to ASTM C 858.

(e) Concrete water and waste water structures. Conform to ASTM C 913.

(f) Solid concrete interlocking paving units. Conform to ASTM C 936.

(g) Other precast concrete units not covered by the preceding requirements. Cast the units in substantial permanent steel forms. When reinforcing steel is required, conform to Section 709. Provide additional reinforcement as necessary for handling the units. Use concrete conforming to the following.

(1) Minimum design strength (f’c) 3,600 pounds per at 28-day strength, AASHTO T 22 square inch min.

(2) Air entrained concrete for precast units exposed to freezing and thawing environment. For air-entrained concrete, conform to the following:

(a) 3/8 inch max. size aggregate 5% min.

(b) > 3/8 inch max. size aggregate 4% min.

Cure the units according to AASHTO M 170.

Sample for verification of required average compressive strength (f’cr). Cast a sufficient number of concrete cylinders from each unit or randomly selected from a production run of units to permit compressive strength testing at 7, 14, and 28 days. Fabricate at least 2 cylinders for each test age. Each compressive strength test consists of two or more cylinders tested according to AASHTO T 22 at the same age. If the minimum required average (f’cr) strength requirement is met at 7 or 14 days, the units may be used 14 days from date of casting.

Do not use precast concrete units when:

• Compressive strength as determined by AASHTO T 22 from each unit or production run does not meet the minimum required average (f’cr) strength requirement by the age of 28 days.

• Cracks, honeycombed, or patched areas are larger than 30 square inches.

725.12 Frames, Grates, Covers, and Ladder Rungs. Fabricate metal grates and covers to evenly bear on the frames. Correct bearing inaccuracies by machining. Assemble all units before shipment. Mark all pieces to facilitate reassembly at the installation site. Uniformly coat all castings with a commercial preservative according to the manufacturer's standard practice. Conform to the following:

(a) Gray iron castings

AASHTO M 105

(b) Carbon steel castings

AASHTO M 103

(c) Structural steel

ASTM A 36

(d) Galvanizing

AASHTO M 111

(e) Malleable iron castings

ASTM A 47

(f) Aluminum alloy ladder rung material ASTM B 221, alloy 6061‑T6

(g) Aluminum castings ASTM B 26, alloy 356.0‑T6

725.13 Corrugated Metal Units. For steel corrugated units, conform to AASHTO M 36. For aluminum corrugated units, conform to AASHTO M 196. For coatings, conform to the following:

(a) Asphalt-coated corrugated units AASHTO M 190, type A

(b) Polymer precoated corrugated units AASHTO M 245, grade 250/250

(c) Fiber-bonded units Subsection 707.09

725.14 Protective Coatings for Concrete. Furnish protective coatings for bridge decks, curbs, sidewalks, and concrete portions of bridge railings conforming to one of the following:

(a) Boiled linseed oil ASTM D 260, type I or II

(b) Petroleum spirits (mineral spirits)

ASTM D 235

725.15 Polyvinyl Chloride (PVC) Pipe for Water Distribution Systems. Conform to the following for the designated sizes and strength schedules:

(a) PVC pipe

ASTM D 1785

(b) Solvent cement for pipe and fittings

ASTM D 2564

725.16 Polyethylene (PE) Pipe for Water Distribution Systems. Conform to ASTM D 2447 for the designated sizes and strength schedules.

725.17 Cast Iron Soil Pipe and Fittings. Conform to ASTM A 74, class SV for the designated sizes.

725.18 Seamless Copper Water Tube and Fittings. Conform to ASTM B 88, type L for the designated sizes.

725.19 Plastic Lining. Furnish a film or fabric that is serviceable for the duration of the installation.

725.20 Lignosulfonate. Furnish a water solution with a base cation of ammonia, calcium, or sodium. Conform to the following:

(a) Solids(1) 50%

(b) Specific gravity 1.25

(c) pH, AASHTO T 289

4.5 min.

Note: (1) Determine the percentage of solids according to the modified Technical Association of the Pulp and Paper Industry Standard T 650‑TM-84 or by a specific gravity/percent solids versus temperature graph that correlates with the standard.

725.21 Epoxy Resin Adhesives. Conform to AASHTO M 235.

725.22 Grout. Furnish grout mixtures conforming to the following for the type or types specified in the contract.

(a) Expansive hydraulic sanded cement grout. Furnish a mixture of hydraulic cement, fine aggregate, water, expansive admixture, and/or pozzolan, or additional admixtures, conforming to the following:

(1) 7-day compressive strength, AASHTO T 106 600 pounds per square inch min.

(2) Flow (time of efflux), ASTM C 939

16 to 26 seconds

Note: A more fluid mix, having a flow cone time of efflux of 9 to 15 seconds, may be used during the initial injection.

Submit the following with the production certification:

• Current material certifications for the hydraulic cement, fine aggregate, expansive admixture, and other grout additives; and

• Independent laboratory test results for 1-day, 3-day, and 7-day strengths, flow cone times, shrinkage and expansion observed, and time of initial set.

(b) Polymer grout. Furnish a polymer binder and fine aggregate in the proportions recommended by the polymer manufacturer with a minimum compressive strength of 3,500 pounds per square inch in 4 hours.

(c) Nonshrink grout. Conform to ASTM C 1107.

(d) Grout for Post-Tensioned Structures. Conform to the requirements of the PTI Guide Specification for Grouting of Post-Tensioned Structures.

(e) Sanded Hydraulic Cement Grout for Miscellaneous Applications. Furnish 1 part hydraulic cement and 3 parts sand. Thoroughly mix with water to produce a thick, creamy consistency.

(f) Neat hydraulic cement grout. Furnish a grout consisting of a mixture of hydraulic cement, water, and admixtures. Do not exceed a water/cement ratio of 0.44. Fly ash, if used, shall not exceed 20% of the cement by weight. Admixtures to reduce water content, improve the flowability, control bleeding, or control shrinkage may be added according to the manufacturer’s recommendations. Admixtures shall be free of chlorides, fluorides, sulphites, and nitrates.

725.23 Reserved.

725.24 Color Coating. Furnish a semiopaque colored toner containing methyl methacrylate‑ethyl acrylate copolymer resins or equivalent resins, solvents, and color‑toning pigments suspended in solution by a chemical suspension agent. The color-toning pigments shall consist of laminar silicates, titanium dioxide, and inorganic oxides. Conform to the following:

(a) Mass per liter, ASTM D 1475

8.3 pounds min.

(b) Solids by mass, ASTM D 2369 30% min.

(c) Solids by volume 21% min.

(d) Drying time, ASTM D 1640 30 minutes at 70 ºF and 50% max. humidity

(e) Color change, ASTM D 822, 1000 h No appreciable change

(f) Resistance to acids, alkalies, gasoline, Excellent and mineral spirits, ASTM D 543

(g) Water vapor transmission from interior Transmittable concrete, ASTM D 1653

(h) Exterior moisture absorption into the Reduces rate concrete surface pores, FSS TT‑C‑555

(i) Oxidation over time None

725.25 Explosives and Blasting Accessories. Only use explosives and initiating devices less than 1-year old. Explosives and initiating devices include, but are not necessarily limited to, dynamite and other high explosives, slurries, water gels, emulsions, blasting agents, initiating explosives, detonators, and detonating cord.

725.26 Mineral Slurry (Drillers Mud). Furnish commercially available sodium bentonite or attapulgite in potable water. Use a mineral grain size that remains in suspension with sufficient viscosity and gel characteristics, so the mixture is capable of transporting excavated material to a suitable screening system.

725.27 Form Liner. Furnish a high quality product that attaches easily to the forming system. Install the form liner so it does not compress more than 1/4 inch at a concrete pour rate of 750 pounds per square foot.

725.28 Aluminum-Impregnated Caulking Compound. Conform to FSS TT-C-598, grade 1.

725.29 Reinforcing Fibers. Use deformed steel or fibrillated polypropylene fibers conforming to ASTM C 1116.