LONGITUDINAL COMPRESSOMETER

Longitudinal Compressometer

Product Code: MSI 2051

The Longitudinal Compressometer is a high-precision testing instrument designed to measure longitudinal deformation and axial strain in cement concrete cylinders under compressive loading. Manufactured in strict accordance with ASTM C 469, this laboratory tool is essential for calculating the Static Modulus of Elasticity (Young's Modulus) and analyzing the mechanical deformation curves of concrete mixes.

Engineered to fit standard 150 mm diameter x 300 mm high concrete test cylinders, the apparatus features a rigid dual-ring frame assembly comprising a structural top ring and a bottom ring. The unit fastens securely onto the specimen walls via heavy-duty tightening screws, tracking microscopic changes in sample height via a built-in high-resolution dial indicator.

🎯 Applications

• Determination of Static Modulus of Elasticity (Young's Modulus) in Concrete

• Longitudinal Deformation & Axial Strain Profile Characterization

• ASTM C469 Standard Testing Compliance Audits

• Civil Engineering Material Characterization Laboratories

• Ready Mix Concrete (RMC) Specialized Testing Centers

• Academic Research & Technical Engineering University Laboratories

⭐ Features

• Standard Compliance: Fully satisfies the rigorous layout and geometric configurations specified by ASTM C 469.

• Rigid Dual-Ring Architecture: Heavy-gauge metal top and bottom rings ensure absolute structural parallelism during active compression cycles.

• High-Resolution Metrology: Equipped with a precision dial gauge reading down to 0.002 mm with a total travel range of 5 mm.

• Zero Adjustment Control: Features a fine-threaded anvil set screw system to quickly and accurately reset the dial gauge indicator to zero.

• Firm Specimen Clamping: Fastens tightly to concrete cylinder outer surfaces using tip-hardened alignment thumbscrews to eliminate slip errors.

• Premium Tool Protection: Supplied complete inside a fitted, velvet-lined wooden carrying case to protect sensitive calibration points during transit.

⚙️ Technical Specifications

Product Code ; MSI 2051

Relevant Standard : ASTM C 469

Compatible Specimen Size : 150 mm Diameter x 300 mm Height Cylinders

Dial Gauge Resolution : 0.002 mm

Dial Gauge Total Range : 5 mm

Frame Design : Structural Double Ring Layout (Top & Bottom Rings)

Zero Setting Mechanism : Fine Thread Anvil Adjustment Screw

Storage Case Type : Premium Fitted Wooden Carrying Case

Operation Mode : Mechanical / Compressive Strain Tracking

📦 Standard Supply Includes

• Longitudinal Compressometer Dual-Ring Assembly Frame

• High-Precision Dial Gauge (0.002 mm x 5 mm)

• Precision Anvil and Zero-Setting Screw Set

• Specimen Tightening Thumbscrews

• Heavy-Duty Protective Wooden Storage Case

• Calibration Sheet and Operation Manual

🔬 Working Principle

A cured 150 mm x 300 mm concrete cylinder is positioned inside a compression testing machine. The compressometer frame is lowered around the barrel of the cylinder, and the top and bottom rings are firmly clamped onto the specimen using the tightening screws.

The dial gauge tip is adjusted to rest squarely against the measurement anvil face. Using the fine-thread anvil screw, the dial pointer is calibrated to exactly zero. As the compression machine applies load, the concrete cylinder undergoes axial compression (shortens). This microscopic downward displacement moves the upper ring relative to the lower ring, causing the dial gauge tip to push against the anvil and display the live longitudinal deformation down to 0.002 mm.

💡 Advantages

• Enables precise elastic modulus mapping, which is crucial for safety calculations in high-rise buildings and infrastructure designs.

• High-resolution mechanical dial (0.002 mm) captures microscopic shifts well before micro-cracking occurs.

• Rigid clamping setup ensures frame stability and prevents slipping against aggregate surfaces under high loads.

• Fitted protective wooden case shields the dial gauge pointer from shock and dust contamination in busy field environments.

🤝 Why Choose Multitech Scientific Instruments?

• Precision-engineered concrete testing equipment.

• Manufactured strictly to International Standards.

• High-quality fabrication and robust material choices.

• Consistent and reliable performance.

• Competitive pricing models.

• Excellent after-sales technical support.

• Trusted by laboratories, contractors, consultants, and educational institutions globally.

Longitudinal Compressometer, Concrete Compressometer ASTM C469, 0.002mm Dial Gauge Compressometer, Concrete Elastic Modulus Gauge, Concrete Strain Gauge Mechanical, 150x300mm Cylinder Compressometer, Concrete Testing Equipment, Concrete Laboratory Equipment, Civil Engineering Laboratory Equipment, Ready Mix Concrete Testing Equipment, Concrete Quality Control Instruments, Construction Material Testing Equipment, Compressometer Manufacturer India, Multitech Scientific Instruments.