ASTM-E2832 2012

$44.96

E2832-12 Standard Test Method for Measuring the Coefficient of Retroreflected Luminance of Pavement Markings in a Standard Condition of Continuous Wetting (RL-2)

Published By	Publication Date	Number of Pages
ASTM	2012	13

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Categories: 93.080.20 - Road construction materials, ASTM

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Description

ASTM E2832-12

Historical Standard: Standard Test Method for Measuring the Coefficient of Retroreflected Luminance of Pavement Markings in a Standard Condition of Continuous Wetting (RL-2)

ASTM E2832

Scope

1.1 This test method covers a measurement of the wet retroreflective (R_L-2) properties of horizontal pavement marking materials, such as traffic stripes and road surface symbols. A standardized method utilizing a standardized continuous wetting device and a portable retroreflectometer is described to obtain measurements of the wet retroreflective properties of horizontal pavement markings.

1.2 Retroreflective performance obtained with this test in a standardized condition of continuous wetting does not necessarily relate to how markings perform in all conditions of natural rain.

Note 1—Test Method E2177 may be used to describe the retroreflective properties of pavement markings in conditions of wetness, such as after a period of rain.

1.3 This test method is suitable for measurements made in the laboratory and in the field when the necessary controls and precautions are followed.

1.4 This test method specifies the use of external beam retroreflectometers conforming to Test Method E1710. The entrance and observation angles required of the retroreflectometer in this test method are commonly referred to as “30 meter geometry.”

1.5 The test method excludes the effects of rain between the vehicle and the marking.

1.6 Results obtained using this test method should not be the sole basis for specifying and assessing the wet retroreflective effectiveness of pavement marking systems. Users should complement the results of this test method with other evaluation results, such as nighttime visual inspections.

1.7 The values stated in SI units are to be regarded as standard. The values given in parentheses are for information only.

1.8 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Keywords

continuous wetting; pavement markings; wet retroreflection

ICS Code

ICS Number Code 93.080.20 (Road construction materials)

DOI: 10.1520/E2832-12

PDF Catalog

PDF Pages	PDF Title
1	Scope Referenced Documents Terminology
2	Summary of Test Method Significance and Use Interferences Apparatus Reagents and Materials Sampling, Test Specimens, and Test Units Calibration and Standardization
3	Procedure Calculation or Interpretation of Results
4	Report Precision and Bias TABLE 1
5	Keywords A1. PORTABLE POWERED CONTINUOUS WETTING DEVICE DESIGN MANUAL A1.1 Construction Details
6	A1.2 System Operation FIG. A1.1
7	FIG. A1.2 FIG. A1.3
8	FIG. A1.4 FIG. A1.5
9	FIG. A1.6
10	FIG. A1.7
11	FIG. A1.8
12	A2. PARTS LIST A2.1 Pressure System A2.2 Connections A2.3 Spray Box FIG. A1.9

Additional information

Standard Title	E2832-12 Standard Test Method for Measuring the Coefficient of Retroreflected Luminance of Pavement Markings in a Standard Condition of Continuous Wetting (R<inf>L-2</inf>)
Published Code	ASTM
Publication Date	2012
Pages Count	13
ICS Codes	93.080.20 - Road construction materials