ZK-450A High Strength Concrete Rebound Tester

ZK-450A High Strength Concrete Rebound Tester Application Industry

Used for structural engineering high-rise building components, bridges, and concrete components (plates, beams, columns, bridges), usually suitable for compressive strength testing of concrete with strength grades C50~C100

Functional Features

High toughness alloy steel springs with good damping and fatigue resistance when purchased;

Precision suitable for CNC precision machining of refined movements, confirming stable rebound values

The pointer axis is smooth, with uniform friction and high measurement stability

The precision ground spherical zero adjustment screw is matched with a high-strength hook, making rebound firing smoother and wear-resistant (based on actual reports), and less likely to bounce off

Adopting high-strength and hard aluminum body shell, it is lightweight and resistant to pressure and drop

Customized protective sleeve handle for more comfortable rebound operation

Data processing software that supports raw record input, facilitating the production of inspection reports

According to the standard

GB/T 9138-2015 "Rebound Tester"

JJG 817-2011 "Rebound Tester" Verification Regulations

JGJ/T 294-2013 "Technical Regulations for Testing the Strength of High Strength Concrete"

Technical Indicators

Pointer Length: 25.0 ± 0.2mm

Pointer Friction Force: 0.65 ± 0.15N

Standard Energy: 4.5J

Working Length of Impact Tension Spring: 106 ± 0.5mm

Tensile Length of Impact Tension Spring: 100 ± 0.5mm

Tension spring stiffness: 900 ± 40N/m

Steel drilling rate setting: 88 ± 2

Impact sphere radius of impact rod: 35 ± 1.0mm

Release position of impact hammer: at the "100" mark

Jump position of impact hammer: at the "0+1" mark