7-86 Sectio N 719 – Epox Y Resin Materials
719.0 1 EPOX Y BONDIN G SYSTEMS . Epoxy bonding systems shall be a grade and class adhesive conforming to the requirements of AASHTO M 235 . Systems shall be evaluated in accordance with the AASHTO Product Evaluation & Audit Solutions committee work plan for Evaluation of Epoxy Resin Based Adhesiv e Bonding Systems , be one of the products listed on the Agency’s Approved Products List , and meet the following requirements:
a.Epoxy Bonding System, Type IV . Type IV systems shall conform to the requirements of AASHTO M 235 for Type IV adhesives. Type I V systems shall be for use in load -bearing applications for bonding hardened concrete to hardened concrete and other materials and as a binder for epoxy mortars and concretes.
b.Epoxy Bonding System, Type V . Type V systems shall conform to the requirements of AASHTO M 235 for Type V adhesives and shall bond freshly mixed concrete to steel. Type V systems shall be for use in load -bearing applications for bonding freshly mixed concrete to hardened concrete and freshly mixed concrete to steel.
c.Epoxy Bonding System, Type VI . Type VI systems shall conform to the requirements of AASHTO M 235 for type VI adhesives. Type VI systems shall be for bonding and sealing segmental precast elements, as in segment -by-segm ent erection and for span -by-span erection when temporary post tensioning is applied. Elongation at break will not be required.
7-87 Sectio N 720 – Geotextiles
720.0 1 GENERA L REQUIREMENTS . Geotextiles shall be evaluated in accordance with the AASHTO Product Evaluation & Audit Solutions work plan for Geotextile Product Evaluation and Facility Audits and in compliance with the AASHTO Product Evaluation & Audit Solutions audit program for geotexti les. Geotextiles shall be one of the products listed on the Agency’s Approved Products List for the respective material specification. 720.0 2 GEOTEXTIL E FOR ROADBE D SEPARATOR . Geotextile for roadbed separator shall conform to AASHTO M 288 , Table 1 , Class 1 for Geotextile Strength Property Requirements, and shall conform to AASHTO M 288 , Table 3 for Separation Geotextile Property Requirements , except as modified below.
a.Permittivity . Permittivity shall be a minimum of 0.2 sec-1 as determined in accordance with ASTM D4491 . 720.03 GEOTEXTIL E UNDE R RAILROA D BALLAST . Minimum average roll values (MARV) for geotextile under railroad ballast shall be as required in Table 720.03A . TABLE 720.03A – MARV FOR GEOTEXTILE UNDER RAILROAD BALL AST Property Test Method MARV Elongation criteria at failure 1 ASTM D4632 50% min. Grab strength (lbs) ASTM D4632 225 Tear strength (lbs) ASTM D4533 115 Puncture strength (lbs) ASTM D6241 850 Permittivity (s-1) ASTM D4491 0.70 Apparent opening size (mm) ASTM D4751 0.212 max. (No. 70 Sieve) UV resistance (% strength retained) ASTM D4355 70% at 500 hours of exposure Structure N/A Nonwoven only 1 Elongation corresponds to maximum grab tensile strength as measured in accordance with ASTM D4632 . 720.0 4 GEOTEXTIL E UNDE R STON E FILL. Geotextile under stone fill shall conform to AASHTO M 288, Table 1 , Class 1 for Geotextile Strength Property Requirements, and shall conform to AASHTO M 288, Table 5 for Stabilization Geotextile Property Requirements. Geotextile structure shall not be slit film.
Source: Vermont Standard Specifications for Construction, 2024 Edition. Pages 1238–1238 of 1,380.