PS-I type asphalt pavement depth construction instrument
PS-I type asphalt pavement depth construction instrument

Tonga PS-I type asphalt pavement depth construction instrument

The principle is to spread dry sand of known volume and specified particle size into a circle of a certain area on the road surface. The ratio of the volume of sand to the average area of the covered surface is called the structural depth of the road surface. The unit is millimeters. It can reflect the macroscopic roughness of the road surface.

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TongaHighway Field Test Procedure Series

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Product Description

This instrument is used to determine the macro-texture of road surfaces.

The principle is to spread a known volume of dry sand with a specified particle size onto the road surface in a circle of a certain area. The ratio of the sand volume to the average area covered is called the texture depth of the road surface. The unit is millimeters, reflecting the macro-texture of the road surface.

Instrument

1. Graduated cylinder. Volume: 25 ± 0.15 ml

2. Spreading plate. A 2-4 mm rubber sheet is attached to the bottom.

3. Windbreak.

4. Texture depth scale.

5. Others include: sand storage bag, sand storage bottle, 3 paint brushes, and dry sand with a particle size of 0.15-0.3 mm (self-provided).

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