Specifications include, but are not limited to: Glass Bead Item 1: AASHTO M-247 Type 1 with 80% Rounds Glass Bead 3.5.1.1. Shall be per the 2021 version of ADOT Standard Specification for Road and Bridge Construction Section 708. Glass bead gradation per subsection 708-2.02 Reflective Glass Beads (Spheres): (A) General; (B) Physical Requirements: (1) Gradation; (2) Roundness. Bead coating shall conform to AASHTO T 346 which is used in Traffic Paint. 3.5.2. Glass Bead Item 2: High Performance Glass Bead (Texas DOT Type 2 or Similar) 3.5.2.1. The exact gradation and rounds requirement for this glass bead shall be as offered by the Contractor. The only requirement is that the reflective potential of this glass bead must exceed the reflective potential of types 1-3 and meet or exceed the gradation requirements of the Texas DOT DMS-8290, Glass Traffic Bead, August 2004 Type 2 Gradation requirements in the bigger bead sizes. The gradations offered shall include the economy of the smaller bead types while including enough of the larger type beads to optimize retroreflective potential. The percentage of rounds can vary between gradation sieve sizes. 3.5.3. Glass Bead Item 3: AASHTO M-247 Type 3 with 80% Rounds Glass Bead 3.5.3.1. Shall be per the 2021 version of ADOT Standard Specification for Road and Bridge Construction Section 708. Glass bead gradation per subsection 708-2.02 Reflective Glass Beads (Spheres): (A) General; (B) Physical Requirements: (1) Gradation; (2) Roundness. Bead coating shall conform to AASHTO T 346 which is used in Traffic Paint...
