Section 706 Section 706 When more than 20% of the units in a lot is rejected, the entire lot will be rejected.
706.04.2 Manufacture .
706.04.2 1--Description . The exposed portion of the marker shall present a smooth,
uniform surface, free of honeycomb, chips, or other defects. The shape, dimensions, and placement of steel shall be in accordance with details shown on the plans. All letters, figures, or other markings shall be true to type and size shown on the plans, and shall be legible.
706.04.2 2--Materials . The materials used in the manufacture shall conform to the
following.
706.04.2 2.1--Cement . The cement used shall meet the requirements of Section 701.
706.04.2 2.2--Aggregates . The aggregates used shall co nform to the requirements of
Subsections 703.02 and 703.03, except that the requirements for gradation will not apply.
706.04.2 2.3--Rei nforcing Steel . Reinforcing steel shall conf orm to the requirements of
Subsection 711.01.
706.04.2 2.4--Proportions . The concrete shall have a minimum cement factor of 1.25.
706.04.2 2.5--St rength Requirements . The strength of the right-of-way markers shall be
determined by the beam method. Under the beam method, a completed unit is loaded at the midpoint of an 18-inch span with three-edge bearing; the unit shall develop a strength of not less than 12,000 pounds, total load. Two specimens will be tested for each 200 units, or increment thereof; one to destruction and one to the ultimate load of 12,000 pounds. SECTION 707 - JOINT MATERIALS
707.01 General . Joint fillers and seals for concrete bridges, concrete pavements or base
course, and culvert pipe shall conform to the following applicable subsections.
707.02 Joint Fillers .
707.02.1 Poured Joint Filler .
707.02.1 1 Asphalt Joint Material . Poured asphalt filler shall be blown asphalt, Grade
AC-13, conforming to the requirements of Subsection 702.05.
707.02.1 2--Polymerized Emulsi fied Asphalt Joint Material . Cold applied
polymerized-emulsified asphalt joint material sh all meet the following requirements when tested in accordance with AASHTO T 59 and as specified below: Minimum Maximum Tests on Emulsion Viscosity, Saybolt Furol @ 122 F, seconds 50 450 Storage Stability, 24 hr., % * - 1 Classification Test Pass Particle Charge Test Positive Cure Test ** Pass Stretch Test *** Pass Distillation: Oil distillate by volume of emulsion % - 2 Residue from distillation, % 65 - Tests on Residue from Distillation Penetration, 77 F, 100 g., 5 seconds 80 150 Ductility, 77 F, cm 40 - Solubility in Trichloroethylene, % 97.5 - * Note 1: Upon examination of the test cylinder after standing undisturbed for 24 hours, the surface shall show no white, milky colored substance but shall be a homogeneous brown color throughout. ** Note 2: Cure Test - Pour approximately one milliliter of the emulsion onto a metal surface. Allow to cure at a minimum temp erature of 80°F under a bright light for four hours. Outside in the sun may be us ed as the test site. After the four-hour curing period, the material shall show no tackiness or tendency to stick to the finger when pressed. *** Note 3: Stretch Test - Pour onto a one-quart friction lid, or similar flat container, enough emulsion to cover the surface. While the emulsion is still brown, embed with thumb pressure several clean, sharp edged rocks of 3/8 to 1/2-inch size. Cure in oven at 100 F for a minimum of eight hours. Remove from oven and allow to cool at room temperature for one hour. Upon lifting a rock from the surface, the asphaltic material must stretch for a distance of three inches before breaking.
707.02.1 3--Concrete Joint Sealer Co mpound - Hot-Poured Elastic Type . Concrete
joint sealer compound, hot-poured elastic type, shall conform to the requirements of ASTM D 6690 for Type I Join t and Crack Sealant.
707.02.1 4--Silicone Sealant . The silicone sealant must be listing on the Department's
APL prior to its use. The silicone sealant shall be a single-component low modulus non- acetic acid cure sealant that does not requir e a primer for bond to concrete. Unless specifically designated otherwise, silicone sealan t shall be either the standard non-sag type or the self-leveling type meeting the following requirements: PHYSICAL REQUIREMENTS Standard Self- Non-Sag Leveling Property Type Type Shore A Durometer Hardness, 10 - 25 15 maximum 7-day cure @ 73.4 ±3.6°F & 45% to 55% R.H., ASTM D 2240 Elongation, 7-day cure @ 73.4 ±3.6°F & 500% 500% 45% to 55% R.H., ASTM D 412, Method A, Die C, minimum Tensile Stress @ 150% Elongation, 20 - 45 psi 10 - 30 psi 7-day cure @ 73.4 ±3.6°F & 45% to 55% R.H., ASTM D 412, Method A, Die C Flow/Sag, ASTM C 639, maximum 0.3 inch Self-Leveling Tack-Free Time, 73.4 ±3.6°F & 45% to 55% R.H., 90 minutes 180 minutes ASTM C 679, maximum Shelf Life from Date of Manufacture, minimum 6 months 6 months The manufacturer of the joint material shall fu rnish certified test results of each lot of material furnished to each project. Each lot of the sealant shall be delivered in containers plainly marked with manufacturer's name or trade mark, lot number and date of manufacture.
707.02.1 5--Backer Rod for Use with Hot and Cold Poured Joint Sealer . The backer
rod shall be a closed-cell foam rod made from polyethylene, polyolefin or similar type material, and shall conform to ASTM D 5249 with the exception that water absorption shall be determined by ASTM C 1016, Procedure A. The backer rod shall either be a Type I, for use with either hot or cold poured joint s ealers, or a Type 3, fo r use with cold poured joint sealers only. Open-cell foam rods or open-cell foam rods covered with an impermeable sheath or skin shall not be allowed. The Contractor shall furnish a three linear foot sample of each shipment and three copies of the manufacturer’s certification that the backer rod meets the requirements of this specification.
707.02.1 6--Tar . Tar filler shall be produced from suitable gas-house, coke-oven, and/or
water-gas tars and shall conform to the following requirements: Minimum Maximum Float Test at 122 F 75 100 Total Distillate, percent by weight to 572 F - 25 Water, percent by volume 1 Bitumen soluble in CS 2, percent 80 - Softening Point of Residue (R & B), F 162 Specific Gravity, 60 F/60 F 1.20 1.28
707.02.2 Preformed Sponge , Rubber, Cork and Closed -Cell Polypropylene Foam
Joint Fillers for Concrete Paving and Structural Constructions . Preformed joint filler shall conform to AASHTO M 153 for sponge, rubber, and cork and tested according to AASHTO T 42. The type required will be indicated on the plans. Closed-cell polypropylene foam shall conform to the requirements in AASHTO M 213 except for the following: the compression test may be less than 340 kPa and closed-cell polypropylene foam shall be tested in accordance with AASHTO T 42.
707.02.3 Wood . Wood board joint filler shall be redwood, cypress, yellow pine, white
pine, fir, longleaf pine, Tupelo gum, or other lumber classed as softwood, and shall conform to the following requirements:
a.Boards shall be free of knots, except that small pin knots 1/4 inch maximum diameter will be permitted. Boards contai ning occasional knots of larger size may be used, providing the knots are removed and the holes either filled with properly sized plugs of the same type wood or covered with approved thin metal attached to the board. Occasional medium surf ace checks not to exceed 1/32 inch width and 10 inch length will be permitted, prov ided the board is free of defects that will impair its usefulness for the purpose intended.
b.Dimensions shall be as shown on the plans, and tolerances of plus or minus 1/16 inch thickness and plus or minus 1/8 inch width will be permitted. For slip-form paving a tolerance of minus 1/4 inch on each end in length will be permitted.
c.The oven-dry weight shall not exceed 38 pounds per cubic foot, and the load required to compress the material in an oven-dry condition to 50% of its thickness before test shall not be more than 2500 psi when tested in accordance with AASHTO T 42.
d.A sample shall be submitted for each shipment of 1000 linear feet or less. Each sample shall consist of a representative section at least 36 inches long and the full depth of the joint. Testing shall be in accordance with AASHTO T 42, as applicable.
e.The joint filler shall be a one-piece board or a lamination of like species of the required thickness, depth and lane width length without joints or splicing except that milled shop finger end joints are permissible.
707.02.4 Preformed Joint Insert Material for Concrete Paving . The preformed joint
insert material shall be of su ch character as not to be defo rmed or broken by twisting, bending, or other ordinary handling when exposed to atmospheric conditions. Pieces of the joint filler that have been damaged shall be rejected. This material is for use in longitudinal joints. When tested, the joint material for concrete paving will meet the requirements of Subsection 707.02.2 or 707.02.3.
707.02.5 Preformed El astomeric Compressive Joi nt Seals for Concrete . The
preformed elastic joint shall be a polychloropr ene joint sealer of the size and shape shown on the plans, bonded to the concrete with a lubricant adhesive and shall conform to ASTM D 2628. The lubricant adhesive shall be in accordance with the recommendation of the manufacturer of the joint seals. The Contractor shall submit the manufacturer's certified test results for each lot of joint seals.
707.03 Blank.
707.04 Rubber Type Gask ets for Joining Conduit . Rubber gaskets for pipe joints and
revisions in design of pipe for installation of the gaskets shall conform to the requirements of ASTM C 443. The Contractor shall submit the manufacturer's certified test results for each consignment of material. 707.05--Bituminous Plastic Sealer for Joining Conduit . Bituminous plastic sealer shall be composed of steam-refined petroleum asphalt or refined coal tar which has been dissolved in a suitable solvent and stiffened with an inert mineral filler. The sealer shall be a smooth uniform mixture, not thickened or livered. It shall show no separation that cannot be easily overcome by stirring. The material shall be of such consistency and properties that it can be readily applied with a trowel, a putty knife, or a caulking gun without pulling or drawing. The material, when applied to pipe surfaces, shall exhibit good adhesive and cohesive properties and shall have only slight shrinkage after curing. The material shall be capable of being exposed to below freezing temperatures without incurring damage. When applied in a layer of 1/16 inch to 1/8 inch thick on a tinned metal panel and cured at room temperature for 24 hours, the bituminous plastic sealer shall set to a tough plastic coating, fre e of blisters. Additional requirements are: Minimum Maximum Grease cone penetration, unworked, 150 grams, 25C, 5 sec., ASTM D 217, mm/10 175 250 Weight, pounds per gallon 9.75 - Non-volatile, 19 grams, 105 C - 110C, 24 hrs., % 75 - Ash, by ignition, % 25 55
707.06 Flexible Plastic Gasket for Joining Conduit. Gasket joint seals shall be
produced from blends of refined hydrocarbon resins and plasticizing compounds reinforced with inert mineral filler and shall contain no solvents. The gasket joint sealer shall not depend on oxidizing, evaporating, or chemical action for its adhesive or cohesive strength and shall be supplied in extruded rope form of suitable cross-section and of such size as to fill the joint space when the pipe s are laid. The gasket joint sealer shall be protected by a suitable removable two-piece wrapper. The two-piece wrapper shall be so designed that one-half may be removed longitudinally without disturbing the other half. The material shall be obtained from sources approved by the laboratory, and the approval will be based on results of testing as required herein. The Department may require the performance test described in AASHTO M 198. Flexible plastic gasket shall also meet the following requirements: Minimum Maximum Test Method Composition Bitumen / Petroleum Plastic Content 50 70 ASTM D 4 Ash-Inert Mineral Matter 30 50 AASHTO T 111 Volatile Matter -- 2.0 ASTM D 6 Property Specific Gravity at 77 F 1.20 1.35 ASTM D 71 *Ductility at 77 F (cm) 5.0 -- ASTM D 113 *Softening Point 320 F -- ASTM D 36 *Penetration 77 F, 150 g, 5 sec. 50 120 ASTM D 217 * Due to the nature of the material, each sample to be tested must be manually kneaded, in lieu of heating and pouring, into the testing containers. The Contractor shall furnish the Engineer thre e copies of the manufacturer's certificate, stating that the flexible plastic gasket meets all the requirements of the specifications and has the properties and characteristics herein specified.
707.07 Neoprene Expansion Joints .
707.07.1 General . Neoprene expansion joints shall consist of an integrally molded unit
of neoprene and bonded metal components or neoprene extrusions bonded to steel extrusions so arranged as to provide for the expansion and contraction movements of the bridge deck.
707.07.2 Material Requirements . Materials used in the manufacture of the expansion
joints shall meet the following requirements: Neoprene shall meet the requirements of AASHTO M 297. Steel plates bonded in the joints and steel extrusions shall conform to the requirements of ASTM A 36. Aluminum plates used in the manufacture of the expansion joints shall conform to the requirements of ASTM B 209, Alloy 6061-T6. Anchor bolts or studs shall be of a weldab le alloy if arc welding is used, and shall conform to the strength requirements of ASTM A 307, Grade A Low Carbon Steel Fasteners.
707.07.3 Certification of Materials . The Contractor shall furnish the Engineer three
copies of the manufacturer's certificate, sta ting that the expansion joint and each component material meets all the requirements of the specifications and have the properties and characteristics herein specified. SECTION 708 - NON-METAL STRUCTURES AND CATTLEPASSES
708.01 General . The structures covered in these specifications are for use as pipe
Source: Mississippi Standard Specifications for Road and Bridge Construction, 2017 Edition. Pages 767–771 of 1,113.