7-18
705.01 Preformed Expansion Joint Filler Preformed expansion j oint filler shall be
non-extruding and resilient bituminous type and shall conform t o the requirements of AASHTO M 213.
705.02 Joint Mortar Joint mortar shall consist of 1 part Port land cement, 2 parts
sand and sufficient water to obtain the required consistency. Mortar shall be used within 30 minutes after its preparation. The cement shall conform to the requirements of Portland cemen t AASHTO M 85, Type II or IIA. The sand shall meet the requirements of the following table: Sieve Designation Percentage by Weight Passing Square Mesh Sieves Joints Thicker Than ½ inch Joints ½ inch or Thinner ⅜ inch 100 - ¼ inch - 100 No. 4 95-100 - No. 8 70-95 85-100 No. 16 45-80 60-90 No. 30 25-55 35-70 No. 50 10-30 15-45 No. 100 2-10 0-15 No. 200 0-5.0 0-5.0 When necessary, material retained on the No. 4 sieve may be rem oved. The sand shall be subjected to the colorimetric test for organ ic impurities, AASHTO T 21, and when a color darker than t he reference standard color solution (laboratory designation Plate III) is produced, the material shall be rejec ted.
705.03 Flexible Watertight Gaskets Flexible gaskets, either r ubber or plastic, shall
conform to ASTM C990. SECTION 706 - NON-METALLIC PIPE
706.02 Reinforced Concrete Pipe This pipe shall conform to th e requirements of
AASHTO M 170M/M 170. Elliptical pipe shall conform to the requ irements of AASHTO M 207M/M 207. Unless otherwise specified, pipe wall design and use of elliptical reinforcement in circular pipe are optional. Pipe arch shall c onform to the requirements of AASHTO M 206M/M 206. 7-19 Aggregates shall meet the requirements of Section 703.01 and S ection 703.02 for fine aggregates and coarse aggregates respectively, except that grading requirements are hereby waived. Fine and coarse aggregate sources shall meet the Alkali Silica Reactivity (ASR) requirements of Section 703.0201. Precast reinforced concrete special sections shall conform to the requirements of the cited specifications to the extent to which they apply.
706.06 Corrugated Polyethylene Pi pe for Underdrain, Option I, and Option III
Culvert Pipe Six inch diameter underdrain pipe and fittings sh all conform to the requirements of AASHTO M 252, slot-perforated. Twelve to sixty inch diameter, Option I/III shall conform to the requirements of AASHTO M 294 Type S. Pipe to be used for Underdrain Type C shall meet the requirements of AASHTO M 294, Type SP and have Class I perforations. All polyet hylene pipe shall be smooth li ned and shall meet the pipe stiffness requirements shown on the Standard Details. The manu facturing plants of polyethylene pipe shall participate annually in the National Tr ansportation Product Evaluation Program (NTPEP) process for plastic pipe and resins which includes audits by the AASHTO Materials Reference Laboratory (AMRL). Plants shall be listed as “Compliant” on the NTPEP website and take immediate corrective action for any deficiencies found during audits. Continued compliance with all elements of the NTPEP/AMRL program and the Maine DOT manufactured Materials Ver ification Program will be required in order to continue supplying product to the Maine DOT.
706.08 PVC (Polyvinylchloride) Pipe This pipe and fittings sh all conform to the
requirements of AASHTO M 278. All pipe shall be supplied with g asket type joints.
706.09 PVC (Polyvinylchloride) Perf orated Pipe This pipe and f ittings shall conform to
the requirements of AASHTO M 278 or ASTM F 949 for 6 inch under drain and AASHTO M 278 for underdrain larger than 6 inch diameter.
706.10 Corrugated Polypropylene Pipe for Option I and Opt ion III Culvert Pipe
Option I/III pipe and fittings shall conform to the requirement s of AASHTO M 330 Type S (dual wall) or Type D (triple wall). All polypropylene pipe shall be smooth lined and shall meet the pipe stiffness requirements of AASHTO M 330. The manufacturing plants of polypropylene pipe shall participate annually in the National Transportation Product Evaluation Program (NTPEP) process for plastic pipe and resins which includes audits by the AASHTO Materials Re ference Laboratory (AMRL). Pla nts shall be listed as “Compliant” on the NTPEP website and take immediate corrective action for any deficiencies found during audits. Continued compliance with all elements of the NTPEP/AMRL program and the Maine DOT manufactured Materials Ver ification Program will be required in order to continue supplying product to the Maine DOT. SECTION 707 - METALLIC PIPE