The Mastic Asphalt Flowability Tester (Leutner-type) is used to evaluate the workability of mastic asphalt mixtures. It is a testing device for measuring the flow behavior of cast-in-place asphalt mixtures under specified conditions. The instrument is suitable for laboratory mix design and on-site quality control in asphalt pavement engineering.

Mastic Asphalt Flow and Deformation Tester

Model:TD764-1

I.Product Overview

The Mastic Asphalt Flow and Deformation Tester (Leutner-type flowability test apparatus) is used to determine the flow performance and workability of mastic asphalt mixtures under specified temperature conditions. It is an important testing instrument for evaluating the high-temperature performance of asphalt materials.

This equipment is suitable for laboratory mix design, material performance research, and on-site construction quality control. It is widely used in high-end pavement engineering applications, such as steel box girder bridge deck paving.The instrument complies with the relevant requirements of the Technical Guidelines for Design and Construction of Steel Box Girder Bridge Deck Pavement.

II.Instrument Composition

1.Flow Test Container

2.Copper Falling Weight (Hammer)

3.High-Temperature Thermometer (up to 300°C)

4.Support Frame for Falling Weight (Guiding Structure)

III.Technical Parameters

Falling Weight Material: Copper (uniform density, wear-resistant, ensuring stable drop performance)

Falling Weight Mass: 995 g (calibrated accuracy, error ≤ ±1 g)

Falling Height: 270 mm (meets standard testing requirements)

Falling Weight Curvature: 58° (optimized design to reduce air resistance effects)

Sample Container Capacity: 12 L (suitable for standard specimen volume)

Support Frame Structure: Ensures vertical guidance of the falling weight and prevents deviation

IV. Product Features

Novel structural design, convenient installation and maintenance;

Simple operation, easy for field and laboratory use;

Stable test results with high repeatability;

Durable copper drop hammer;

Reasonable structure and long service life;

Accurate and reliable test results, consistent with engineering practice.

V.Engineering Significance

Traditional Leutner-type flowability tests have the following limitations:

Significant influence from ambient temperature;

Falling height and timing determined by manual judgment;

Strong subjectivity in test results.

This equipment has been improved through structural optimization to achieve:

More stable testing conditions;

Higher data repeatability;

Evaluation results that better reflect actual construction performance.