450,000lbf Automatic Concrete Compression, Flexural, and MOE

Gilson AC-450M, 450K Automatic Concrete Compression, Flexural, & MOE Machine

AC-450 Series Fully Automatic Concrete Compression Machines

The AC-450 Series Automatic Concrete Compression Machines are cutting-edge equipment designed for high-capacity and precise concrete strength testing. With a total load capacity of 450,000lbf (2,002kN) and a rugged, welded steel frame, these machines exceed ACI 363 requirements for system rigidity, ensuring unmatched reliability during testing. The AC-450 Series is ideal for performing compressive strength tests on concrete cylinders, beams, cubes, cores, and a variety of other specimen types—all with minimal operator input and maximum efficiency.

Designed to meet the needs of modern testing laboratories, these machines handle 6x12in (152x305mm) concrete cylinders up to 12,700psi (87.6mPa). Users can rely on high precision, repeatable results that conform to ASTM, AASHTO, and BS testing standards, ensuring industry compliance at every stage.

Key Features

• Advanced Automation: Fully automatic operation simplifies testing. A single touch on the menu-driven touchscreen controller initiates an automated test cycle, handling everything from specimen contact, pre-loading, and break detection to piston retraction.
• Precision and Accuracy: Regulated load rate and feedback ensure consistent, accurate results. Real-time force, stress, and load rate data are displayed alongside optional load vs. time or stress vs. strain graphs.
• Data Management with Ease: Test data can be printed via Wi-Fi or transferred to a PC using USB or LAN ports, providing seamless reporting and error-free records. Laboratory and client information are stored to simplify data tracking and distribution.
• Enhanced Safety Features: Includes a hydraulic safety relief valve, emergency-stop button, piston over-travel limit switch, and see-through fragment guard doors to protect operators during tests.
• Energy-Efficient Drive System: A state-of-the-art electric motor and hydraulic pump operate at variable speeds, reducing noise, minimizing pressure variations, and extending the service life of hydraulic components.
• Top-Mounted Piston Design: Prevents long-term wear and damage caused by test debris, ensuring the machine's durability.

Specialized Models

In addition to the standard AC-450 model, two specialized versions are available:

• AC-450M: Factory-modified to include a proportional valve for controlled piston retraction, making it suitable for advanced modulus of elasticity (MOE) testing.
• AC-450MR: Similar to the AC-450M but equipped with dual LVDT inputs, enabling precise determination of both MOE and Poisson’s ratio. These models are ideal for detailed performance evaluations of 4in or 6in cylinders.

Both specialized models can also perform compressive, flexural, and splitting tensile strength tests using the same component sets as the standard version. Optional Compressometer and Compressometer/Extensometer fixtures can be added for MOE and Poisson’s ratio testing.

Included Items

• 450,000lbf Automatic Concrete Compression Machine (available in 110V, 60Hz or 230V, 50Hz models).
• 6x12in Cylinder Test Set designed for use with unbonded capping pads and steel retainers.
• Sturdy mounting stand for secure operation.

Specifications

• Load Capacity: 450,000lbf (2,002kN)
• Max Strength, psi (mPa): 12,700psi (87.6mPa)
• Opening with Platens: 9.5 x 19.125in (241 x 486mm), WxH
• Product Dimensions (with Stand): 34 x 24 x 60in (864 x 610 x 1,524mm), WxDxH

Benefits

1. Increased Productivity: Automated test cycles reduce operator input and errors while increasing throughput for high-demand labs.
2. Versatile Applications: Suitable for a wide range of concrete strength tests, including compressive, flexural, and tensile testing.
3. Precision-Driven Results: Meets or exceeds key testing standards, including ASTM C 39, ASTM E 4, AASHTO T 22, and BS 1881.
4. Durable Design: Built to last, with a frame that exceeds industry rigidity standards and components that resist long-term wear and overheating.

Applications

The AC-450 Series is ideal for:

• Construction materials testing labs.
• Research and development projects.
• Quality control in concrete production facilities.
• Advanced structural analysis for engineering firms.

By combining durability, automation, and precision, the AC-450 Series delivers reliable performance and ensures compliance with global testing standards. Whether you're conducting routine quality control or pursuing advanced research, this machine offers the ultimate solution for concrete strength testing.