AASHTO M 247-2013 Standard Specification for Glass Beads Used in Pavement Markings.pdf
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1、Standard Specification for Glass Beads Used in Pavement Markings AASHTO Designation: M 247-13 American Association of State Highway and Transportation Officials 444 North Capitol Street N.W., Suite 249 Washington, D.C. 20001TS-4c M 247-1 AASHTO Standard Specification for Glass Beads Used in Pavement
2、 Markings AASHTO Designation: M 247-13 1. SCOPE 1.1. This specification covers glass beads to be dropped or sprayed upon pavement markings so as to produce a reflectorized pavement marking. 1.2. The values stated in SI units are to be regarded as the standard. 1.3. This standard may involve hazardou
3、s materials, operations, and equipment. This standard does not purport to address all of the safety concerns associated with its use. It is the responsibility of the user of this standard to consult and establish appropriate safety and health practices and determine the applicability of regulatory l
4、imitations prior to use. 2. REFERENCED DOCUMENTS 2.1. AASHTO Standards: T 346, Glass Beads Used in Pavement Markings TP 106, Determination of Heavy Metal Content of Glass Beads Using X-Ray Fluorescence (XRF) 2.2. Environmental Protection Agency Standards: Method 3052, Microwave Assisted Acid Digesti
5、on of Siliceous and Organically Based Matrices Method 6010B, Inorganics by ICPAtomic Emission Spectroscopy Method 6010C, Inorganics by ICPAtomic Emission Spectroscopy 2.3. Federal Standard: Federal Standard No. 40, CFR 261.24, Table 1, Maximum Concentration of Contaminants for the Toxicity Character
6、istic 3. GENERAL REQUIREMENTS 3.1. Types: 3.1.1. Type 0shall be known as a uniform gradation. 3.1.2. Type 1shall be known as a standard gradation. 3.1.3. Types 2, 3, 4, and 5shall be known as modified gradations. 2015 by the American Association of State Highway and Transportation Officials.All righ
7、ts reserved. Duplication is a violation of applicable law.TS-4c M 247-2 AASHTO 3.2. Coatings: 3.2.1. FlotationAny of the above gradation types may be obtained with oleophobic properties at the request of the purchaser (Note 1). 3.2.2. Moisture ResistanceAny of the above types may be obtained with hy
8、drophobic properties if so specified by the purchaser. 3.2.3. AdherenceAny of the above types may be obtained with an adhesion coating if so specified by the purchaser. Note 1Any of the above types of beads may be specified with a combination of two of the above coatings. Dual coated beads must test
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