This testing machine can be classified into two types according to the loading method: electric hydraulic type and electro-hydraulic servo (constant loading) type. According to the control system configuration, it can also be divided into four categories: digital display type (S), hydraulic display type (Y), computerized type (D), and combined cement flexural and compression testing type (Z).

Constant Stress Cement Flexural and Compression Testing Machine

Model:TDYE-300DZ

I. Product Introduction

The cement flexural and compression testing machine is developed and manufactured in accordance with the requirements of JT/T 946-2014 “Grouting Materials (Agents) for Prestressed Ducts in Highway Engineering” issued by the Ministry of Transport of the People’s Republic of China, specifically the section 4.2 “Performance of Cement Paste”.This testing machine is suitable for determining the flexural strength of concrete specimens sized 100×100×400 mm and 150×150×550 mm, as well as the compressive strength of cement, mortar, and other building materials.

Referenced or applicable international standards: ASTM C109, EN 196-1, ISO 679, ASTM C1107, ISO 7500-1, ASTM E4.

II. Technical Parameters

1. Load capacity: 300 kN

2. Accuracy class: Class 1

3. Force measuring range: 30–300 kN

4. Minimum resolution: 0.1 kN

5. Instrument operating voltage: 220 V ±10%

6. Motor operating voltage: 380 V ±10%

7. Motor power: 0.75 kW

8. Relative error of indication: ±1%

9. Hydraulic pressure: 25 MPa

10. Flexural support roller diameter: Φ30 mm

11. Clear vertical distance between upper and lower flexural rollers: Φ165 mm

12. Center distance between upper anti-bending rollers: 150mm

13. Center distance between lower anti-bending rollers: 450mm

14. Pressure plate diameter: Φ160mm

15. Clear distance between upper and lower pressure plates: 180mm

16. Piston diameter × stroke: Φ125 × 100mm

17. Overall dimensions: 840X530X1450mm

18. Net weight: 400Kg

III. Features

Dual-function design for both flexural and compressive strength testing;

Hydraulic loading system ensures stable and smooth force application;

Constant stress loading mode for high testing accuracy;

High-precision load measurement with real-time digital display;

Easy operation with automated test process control;

Strong structural rigidity for long-term stable performance;

Suitable for laboratory and quality inspection applications;

Optional computerized data acquisition and printing system available.

IV. Working Principle (Brief)

The machine applies hydraulic pressure through a piston system to generate controlled loading on the specimen. The load is transmitted through compression plates or flexural rollers, and the system continuously measures force and deformation to determine material strength properties.