450k Auto Concrete Compression, Flexural, MOE, Poisson's

Gilson AC-450MR, 450K Automatic Concrete Compression, Flexural, MOE, & Poisson's Ratio Machine

AC-450 Series Fully Automatic Concrete Compression Machines

The AC-450 Series Automatic Concrete Compression Machines are engineered for precise, heavy-duty strength testing, offering a total capacity of 450,000lbf (2,002kN). Designed with a rugged, welded steel frame that exceeds ACI 363 requirements for system rigidity, these machines ensure unmatched reliability and accuracy for testing concrete cylinders, beams, cubes, cores, and other sample types.

Ideal for laboratories and testing facilities, the AC-450 series is equipped to handle compression strength tests for 6x12in (152x305mm) concrete cylinders up to 12,700psi (87.6mPa). The machines are supplied ready for testing with user-supplied unbonded neoprene capping pads and steel retainers, ensuring seamless operation.

Automated Testing for Maximum Efficiency

With an advanced touchscreen controller, the AC-450 series simplifies the entire testing process. After selecting the test method, sample type, specimen data, and test parameters, the automated test cycle begins with just one touch. The machine efficiently manages:

• Specimen contact and pre-loading
• Load rate and break detection
• Real-time data collection
• Automatic piston return to the home position

This automation ensures consistent, repeatable, and accurate results that comply with ASTM, AASHTO, and other international testing standards. By eliminating variations in load rates and test procedures, the AC-450 enhances productivity and minimizes operator input, reducing the chance of errors.

Advanced Data Management & Reporting

The AC-450 machines provide real-time displays of force, stress, and load rates, with options for load vs. time or stress vs. strain graphs during testing. Data can be seamlessly managed through:

• USB and LAN ports for quick data export
• Wi-Fi capability for direct printing or sharing results
• An intuitive menu for printing or transferring test data in summary form

Laboratory information, sample IDs, and client details can also be saved to streamline reporting. The diagnostics feature instantly displays the status of critical components, such as the emergency-stop button, pressure transducer, drive system, and more, preventing downtime from unresolved faults.

Cutting-Edge Hydraulic Drive System

The AC-450 incorporates a next-generation variable-speed hydraulic pump and motor, ensuring energy efficiency, quieter operations, and extended hydraulic component lifespan. Unlike traditional systems, the drive system eliminates pressure variations caused by overheating, providing consistent performance under demanding conditions.

Additionally, the top-mounted piston design prevents debris from accumulating and causing wear, further enhancing the machine's durability and reliability over time.

Unparalleled Safety Features

The AC-450 prioritizes operator safety with:

• Emergency-stop button
• Hydraulic safety relief valve
• Piston over-travel limit switch
• See-through fragment guard doors

These features, coupled with the machine’s robust design, provide a secure and efficient testing environment.

Specialized Models for Advanced Testing

In addition to the standard AC-450 model, the series includes AC-450M and AC-450MR models, which are factory-modified for advanced testing capabilities. These models include:

• Proportional valves for controlled piston retraction
• Options for testing modulus of elasticity (MOE) and Poisson’s ratio on 4in or 6in cylinders as per ASTM C469
• Compatibility with compressometer and compressometer/extensometer fixtures (sold separately)

These enhanced models are capable of performing compressive, flexural, and splitting tensile strength tests using the same components as the standard models.

Features at a Glance

• Windows-based touchscreen controller for simple, menu-driven test setup
• Minimal operator input required, improving productivity and reducing errors
• Wi-Fi, USB, and LAN ports for effortless data management
• State-of-the-art variable-speed hydraulic drive system for efficient and consistent performance
• Safety features include E-stop button, fragment guards, and hydraulic safety relief valve
• Durable welded steel frame exceeds ACI 363 for system rigidity

Included Items

• 450,000lbf (2,002kN) Automatic Concrete Compression Machine (available in 110V, 60Hz or 230V, 50Hz versions)
• 6x12in Cylinder Test Set for use with unbonded caps
• Mounting stand for stability and convenience

Specifications:

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

Meets Test Methods

• AASHTO T 22
• ASTM C 39
• ASTM E 4
• BS 1610
• BS 1881

Why Choose the AC-450 Series?

The AC-450 Series is the ultimate solution for labs and professionals needing highly accurate, automated, and efficient concrete strength testing. With its advanced features, robust design, and customizable options, the AC-450 ensures precision and reliability, making it a trusted partner for any concrete testing application.