325,000lbf Automatic Concrete Compression, Flexural Machine

Gilson AC-325MR, 325K Automatic Concrete Compression, Flexural, MOE, & Poisson's Ratio Machine

AC-325 Series Fully Automatic Concrete Compression Machines

The AC-325 Series represents the cutting edge of concrete compression testing, combining advanced automation with robust construction to deliver precise, repeatable results. Designed for testing 6x12in (152x305mm) concrete cylinders with a maximum compression strength of 9,200psi (63.4mPa), these machines are ideal for laboratories seeking accuracy, efficiency, and compliance with industry standards. The standard frame comes equipped for basic testing needs, with optional accessories available to expand its functionality for a broader range of applications.

Why Choose AC-325 Machines?

Unmatched Ease of Use

The AC-325 Series simplifies concrete strength testing with its fully automatic operation. With just a single touch on the intuitive touchscreen controller, the machine initiates a fully automated test cycle. From specimen contact and pre-loading to rate of load application, break detection, and piston return, every step is precisely managed with minimal operator input. This ensures consistent and error-free results every time.

Advanced Automation and Data Management

• Real-Time Monitoring: During testing, force, stress, and load rates are displayed simultaneously on the touchscreen, along with real-time graphs for load vs. time or stress vs. strain.
• Seamless Data Transfer: USB, LAN, and Wi-Fi capabilities enable instant data collection, easy test printing, and transfer to your PC for detailed reporting.
• Comprehensive Reporting: Test data, including laboratory details, sample ID, and client information, is stored for accurate reporting and distribution.

Designed for Accuracy

The system eliminates variations in load rates and test procedures, conforming to ASTM, AASHTO, and other international standards. This ensures precise, repeatable documentation suitable for both research and compliance.

State-of-the-Art Features

• Next-Gen Drive System: The integrated electric motor and hydraulic pump operate at variable speeds to maintain consistent pressure, reduce noise, and extend the lifespan of hydraulic components. This cooling, energy-efficient system eliminates pressure variations caused by overheating.
• Unparalleled Safety: Safety features include an emergency-stop button, hydraulic safety relief valve, piston over-travel limit switch, and see-through fragment guard doors to protect the operator during testing.
• Durable and Rigid Frame: The rugged welded steel frame exceeds ACI 363 requirements for rigidity, ensuring long-term reliability. The top-mounted piston prevents debris from damaging the hydraulic system, minimizing wear and tear.

Expanded Testing Capabilities

The standard AC-325 model supports both compression and flexural testing of concrete specimens. For more advanced testing needs:

• AC-325M and AC-325MR Models: These factory-modified models are equipped with additional features, including a proportional valve for controlled piston retraction and LVDT inputs. They can measure modulus of elasticity (MOE) and Poisson’s ratio on 4in or 6in cylinders, meeting ASTM C469 requirements.
• Optional Accessories: Additional components, such as compressometers and extensometers, can be purchased separately to further expand testing capabilities.

Key Features

• Windows-based touchscreen controller for easy test setup and operation
• Fully automated test cycle for minimal operator input and increased productivity
• Compliance with ASTM, AASHTO, BS, and other standards
• Real-time data display and automatic test documentation
• USB, LAN, and Wi-Fi connectivity for effortless data management
• Energy-efficient and quiet hydraulic system for consistent performance
• Enhanced safety features, including E-stop button and fragment guard doors

Included Items

• 325,000lbf (1,446kN) Automatic Concrete Compression Machine (110V, 60Hz or 230V, 50Hz)
• 6x12in Cylinder Test Set for use with unbonded neoprene caps
• Mounting stand

Specifications

• Load Capacity: 325,000lbf (1,446kN)
• Compression Strength: Up to 9,200psi (63.4mPa)
• Max Specimen Size: 6x12in (152x305mm) concrete cylinders
• Clearance (WxH): 9.5 x 19.25in (241.3 x 489mm)
• Dimensions (WxDxH): 33 x 17 x 58in (838 x 432 x 1,473mm), including stand
• Power Options: 110V, 60Hz or 230V, 50Hz

Compatible Test Standards

• ASTM C39
• ASTM E4
• ASTM C469 (with AC-325M/AC-325MR models)
• AASHTO T22
• BS 1610
• BS 1881

Applications

Ideal for testing in construction, research, and material production industries, the AC-325 Series is capable of:

• Compression strength testing
• Flexural strength testing
• Splitting tensile strength testing
• Measuring modulus of elasticity (MOE) and Poisson’s ratio (with accessories)

The AC-325 Series Fully Automatic Concrete Compression Machines set the benchmark for reliability, precision, and efficiency in concrete strength testing. Whether you're running a high-volume testing lab or conducting specialized research, these machines are built to meet the demands of modern material testing with ease.