Скачать или смотреть Measurement of surface roughness morth table 900-2

The Surface Irregularity Test measures the unevenness or roughness of a surface, typically a road or pavement. Here's an overview:

Methods
1. *Straight Edge Method*: A straight edge is placed on the surface, and the gap between the edge and surface is measured.
2. *Profilograph Method*: A profilograph is a device that measures surface irregularities by tracing the surface profile.
3. *Laser Profilometer Method*: A laser profilometer uses laser technology to create a high-resolution profile of the surface.

Parameters Measured
1. *International Roughness Index (IRI)*: Measures the roughness of the surface.
2. *Ride Number (RN)*: Measures the smoothness of the surface.
3. *Surface Irregularity Index (SII)*: Measures the overall irregularity of the surface.

Applications
1. *Road construction*: Ensures newly constructed roads meet smoothness standards.
2. *Pavement maintenance*: Identifies areas requiring repair or maintenance.
3. *Quality control*: Verifies surface quality during construction or maintenance projects.
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