Concrete Strength Test
Concrete Strength Test

Langry RH225-A Rebound Concrete Test Hammer

25,000.00৳ 

  • Concrete Strength Test,
  • Brand: LANGRY
  • Model: RH225-A
  • Country of Origin: China
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Description

  • Product Specifications  

  • The Langry RH225-A Rebound Concrete Test Hammer (also known as Schmidt hammer or sclerometer) is a mechanical, analog non-destructive testing (NDT) device designed for quick on-site estimation of compressive strength in ordinary concrete structures (10–70 MPa range). Manufactured by Jinan Langry Detection Technology Co., Ltd. (China), this rebound concrete test hammer follows the classic Schmidt principle: a spring-loaded plunger impacts the surface, and the rebound distance indicates surface hardness, correlating to strength via charts or formula

Name Technical indicators
Standard impact energy 2.207 J
Pointer length 20.0 ± 0. 2 mm
Friction of pointer 0.65 ± 0. 15 N
Spherical radius of bouncing rod 25±1.0 mm
Elastic tension spring stiffness 785.0 ± 30. 0 N/m
Operating length of elastic tension spring 61.5±0.3 mm
Bounce hammer take-off position Scale “0~1”
Calibration value on testing anvil 80±2

  • Product Features

  • Imported high-quality springs are more fatigue-resistant, aluminum alloy spring seat snap ring assembly.
  • Adopt CNC machining centers and other machine tools to refine the movement.
  • Silicone bracket for soft hand protection.
  • Finely grind the spherical zero-setting screws to make the rebound firing smoother.

 

Standards

  • JGJ-T23
  • ГОСТ 22690
  • ASTM D 5873 (Rock)
  • ASTM C 805
  • EN 12504-4
  • EN 13791
  • ISO/DIS 8045
  • JIS A1155

 

Components

rebound hammer

Hand protector silicone hand rest

A grinding stone

One maintenance kit

instrument case

Key Specifications

  • Impact Energy: 2.207 J (standard for Type N hammers)
  • Compressive Strength Range: 10–70 MPa (1,450–10,152 psi)
  • Pointer Friction: 0.65 ± 0.15 N
  • Pointer Length: 20.0 ± 0.2 mm
  • Spring Stiffness: 785.0 ± 30.0 N/m
  • Rebound Value on Anvil: 80 ± 2
  • Plunger Radius: 25 ± 1.0 mm
  • Weight: ~1 kg
  • Case Material: Super-hard 6061 aluminum alloy (abrasion-resistant)

 

Applications :

The Concrete Test Hammer RH225-A offers a precise evaluation of concrete strength, which is vital for construction projects, infrastructure assessment, and quality control in civil engineering endeavors.

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