The Granular Wood Fiber Loose Bulk Density Tester is specially designed for measuring the loose bulk density of fibers used in asphalt pavement materials. It is suitable for granular wood fibers and other fibrous materials, providing accurate and reliable density evaluation for laboratory research, material quality control, and road engineering applications.

Loose Bulk Density Tester for Fibers

Model:TDJT533-N

I. Product Introduction

The granular fiber loose bulk density instrument is used to determine the loose bulk density of granular wood fibers. It conforms to the requirements of Appendix N “Test for Loose Bulk Density of Granular Wood Fibers” in JT/T 533-2020 “Fibers for Asphalt Pavement”, and is designed with reference to international standards including ISO 60, ISO 697, and ASTM D1895, which specify test methods for bulk density measurement of fibrous and granular materials.

II. Product Features

1. Specially designed for granular wood fiber loose bulk density testing

2. Simple structure and easy operation

3. Stable and reliable testing performance

4. High measurement accuracy and repeatability

5. Suitable for laboratory and research applications

6. Compact size for convenient transportation and storage

7. Made with durable materials for long service life

8. Ideal for asphalt pavement fiber quality control

III. Technical Parameters

1. Funnel

Height: 115 mm; Upper inner diameter: 55 mm ± 1 mm; Lower inner diameter: 35 mm ± 1 mm

2. Metal Cup

Height: 80 mm ± 1 mm; Inner Diameter: 40 mm ± 1 mm; Volume: 100 mL

3. Overall Specifications

Dimensions: 150 × 180 × 300 mm; Net Weight: 3.6 kg

IV. Test Procedure

1. Dry the fiber specimen in an oven at 105°C ± 5°C for more than 2 hours, and then cool it in a desiccator.

2. Clean the inside of the metal cup and funnel thoroughly. Close the valve at the bottom of the funnel, and slowly load the dried and cooled granular fiber sample into the funnel using a scoop.

3. Position the funnel approximately 40 mm above the metal cup, open the valve, and allow the fibers to fall freely into the metal cup under gravity.

4. Remove the excess fibers from the top of the metal cup using a straightedge and level the surface. During the test, vibration or compression of the fibers inside the metal cup shall be avoided.

5. Zero the balance with the porcelain dish, transfer the fibers from the metal cup into the dish, and weigh the fiber mass.