The combines a 7 L test capacity, direct-reading measurement, pressure-method testing, and compact design in one apparatus. It is suitable for both laboratory and field applications where reliable and convenient fresh concrete air content measurement is required.

Direct Reading Concrete Air Content Tester

Model: TDJG246-1

I. Product Introduction

The Concrete Air Content Tester by the Pressure Method is developed in accordance with JTG/E30-2005 Test Methods of Cement and Concrete for Highway Engineering, T0526-2005 Test Method for Air Content of Cement Concrete Mixture (Combined Pressure Method). The product complies with the requirements of JG/T 246-2009 Concrete Air Content Tester. This series of products is suitable for determining the air content of cement concrete with a nominal maximum aggregate size of no more than 31.5 mm, an air content of no more than 10%, and a measurable slump.

Reference Standards: ASTM C231/C231M, EN 12350-7:2019

II. Technical Specifications

1. Capacity: 7 L

2. Air Content Range: ≤10%

3. Maximum Aggregate Size: ≤40 mm

4. Minimum Reading: 0.1%

5. Maximum Design Pressure: 4 MPa

6. Maximum Working Pressure: 0.4 MPa

7. Air Tightness Test Pressure: 0.4 MPa

8. Weight: 11 kg

III. Appendix

Appendix 1: Accessories for the Air Content Tester

1. 100 mL Graduated Cylinder: 1 pc.

2. Water Filling Device: 1 pc.

3. Spirit Level: 1 pc.

4. Tamping Rod: 1 pc.

Appendix 2: Other Testing Equipment and Tools Used with This Apparatus

1. Bench Scale: Capacity: 50 kg; readability: 50 g.

2. Rubber Mallet: Equipped with a rubber head weighing approximately 250 g.

3. TD245 Series Concrete Vibrating Table: Any model can be selected.

IV. Product Features

1. Direct Reading: The air content can be read directly from the pressure gauge for convenient and efficient testing.

2. Pressure Method Testing: Designed for determining the air content of fresh cement concrete mixtures using the pressure method.

3. 7 L Capacity: The 7 L test container is suitable for routine laboratory and field testing of fresh concrete.

4. Clear Measurement: With a minimum reading of 0.1%, the apparatus provides convenient measurement of concrete air content.

5. Robust Construction: The testing vessel is designed for stable operation and repeated use in concrete testing laboratories and construction sites.

6. Complete Accessories: The standard configuration includes a graduated cylinder, water filling device, spirit level, and tamping rod.

V. Application

The Direct Reading Concrete Air Content Tester is suitable for laboratories, construction sites, quality control departments, and research institutions involved in concrete testing.

It is mainly used to determine the air content of fresh cement concrete mixtures and can be applied to concrete quality control, mix design, construction inspection, and laboratory research.

VI. Testing Principle

The apparatus determines the air content of fresh concrete based on the pressure method. After the concrete sample is placed and properly compacted in the test container, the container is sealed and pressurized. The pressure response is used to determine the percentage of air contained in the concrete mixture.

The direct-reading design allows the test result to be obtained conveniently from the measuring system, making the apparatus suitable for routine air content testing.