HT-225 concrete rebound tester

This instrument is a HT-225 rebound tester that complies with JGJ/T23-2001 technical specifications and is used to test the compressive strength of concrete within the range of 10-60Mpa,

The standard energy of the system is 2.207J, and the indication system is a medium-sized rebound instrument with pointer direct reading, which is regulated by the national metrological verification regulation "Concrete Rebound Instrument"

(JJG817-93) and the chief editor of the industry standard "Technical Specification for Testing Concrete Compressive Strength by Rebound Method" - Shaanxi Provincial Building Science Research Institute

Supervised by the Accounting Institute.
HT-225hammercharacteristic:

Lightweight (2/3 less labor-saving than similar products), flexible, affordable, no need for power, easy to control, buttons using stretching technology that are not easily detached, pointers

Easy to adjust friction, it is a non-destructive testing instrument suitable for on-site use.

Strength measurement range:10-60Mpa

Nominal impact kinetic energy:2.207J（0.225Kgf.m)

Stretch length of spring for impact: 75 ± 0.3mm

Static friction force of pointer slider: 0.65 ± 0.15N

Spherical curvature radius of the striking rodSR：25mm±1mm

Rebound tester calibrates the average rebound value on the steel anvilRm：80±2

External dimensions: Φ54×278mm

Weight: ≈1Kg

There are two ways to test the concrete strength of components: individual testing and batch testing (the selected components should be randomly selected and representative, and the number of components tested in batches should not be less than the number in the same batch of construction documents)30%And the number of components shall not be less than10Item).

The number of measurement areas for each structure or component shall not be less than10One, for dimensions smaller than in a certain direction4.5mAnd the size in the other direction is smaller than0.3mThe number of measuring areas for the components can be appropriately reduced, but should not be less than5One.

The distance between adjacent sides should be controlled within2mThe distance between the measuring area and the end of the component or the edge of the construction joint should not be greater than0.5m, and should not be less than0.2m.