Concrete Rebound Hammer Tester
Application & Usage
This mechanical concrete rebound hammer is a non-destructive testing instrument, widely used for rapid in-situ detection of compressive strength of hardened concrete structures. Main Application Scenarios: Construction site quality inspection for beams, columns, walls, floors and bridge components Third-party engineering inspection institutions for building acceptance testing Old building reconstruction, safety appraisal and structural strength assessment Precast concrete factory finished product strength spot check Standard Operation Flow:
1. Polish the concrete testing surface flat and clean with the matching grinding stone;
2. Hold the rebound hammer perpendicular to the test surface, push the instrument steadily until the inner spring triggers impact;
3. Read the rebound value from the built-in scale on the barrel; convert readings to concrete compressive strength via attached conversion chart;
4. Complete multi-point repeated tests on the same component to get average strength data for test reports.
Core Functional Features
● Non-destructive Detection: No damage to concrete components, reusable testing for the same structure repeatedly.
● Mechanical Stable Structure: Pure mechanical spring impact system, no battery or power supply required, works reliably in outdoor construction sites without power limits.
● Clear Calibration Scale: Built-in precision graduated scale with printed strength conversion table on the barrel for instant data lookup.
● Complete Matching Accessories: Equipped with grinding stone, spare impact spring, screwdriver and storage case for full-cycle operation and maintenance.
● Portable Integrated Design: Lightweight handheld body with custom orange shockproof carry case for easy transport to construction sites.
● High Test Accuracy: Strict factory calibration before delivery, consistent impact force, meets global concrete strength testing standards.
● Wide Applicability: Suitable for ordinary reinforced concrete, precast concrete, road concrete and mortar structural testing.
Premium Material Configuration
1. Main Hammer Barrel: High-strength stainless steel alloy, anti-rust, wear-resistant, resistant to collision during field construction transport.
2. Impact Spring & Internal Core Parts: High-carbon alloy steel with heat treatment, stable elastic force, long service life without fatigue deformation.
3. Test Grinding Stone: Silicon carbide abrasive block, fast polishing to smooth rough concrete surfaces for accurate readings.
4. Storage Carry Case: High toughness engineering plastic outer shell + shock-absorbing EVA foam inner lining, anti-drop, dustproof and moisture-proof.
5. Auxiliary Fittings: Corrosion-resistant metal screwdriver, sealed spare spring set for regular replacement.
Working Principle
The tester operates based on the elastic rebound theory of materials:
1. Inside the instrument, a standard tension spring drives a steel impact plunger to strike the concrete surface with fixed kinetic energy.
2. Part of the impact energy is absorbed by plastic deformation of concrete; the remaining energy bounces the plunger backward.
3. The sliding pointer records the maximum rebound distance on the graduated scale. Harder concrete generates a higher rebound value, while low-strength concrete produces a lower reading.
4. Operators convert rebound readings to corresponding concrete compressive strength (MPa) using the built-in conversion curve printed on the hammer body, to evaluate structural concrete quality quickly.
FAQ
Q1: What Testing Standards Does This Concrete Rebound Hammer Comply With?
A: It conforms to Chinese JGJ/T 23, ISO 1920 and ASTM C805 standards. CE certification documents are available for overseas engineering inspection companies and construction contractors.
Q2: Does This Rebound Tester Need Batteries Or Charging Before Use?
A: No power supply is required. It adopts fully mechanical spring impact structure, supporting continuous all-day field testing without power limits, ideal for outdoor construction sites.
Q3: What Accessories Are Included In The Complete Set?
A: The full kit contains stainless steel rebound hammer, grinding stone, spare impact spring, adjustment screwdriver and customized shockproof plastic storage case, all parts for daily testing and maintenance are included.
Q4: How To Ensure Accurate Test Results?
A: First polish rough concrete surfaces with the matching grinding stone to eliminate unevenness; keep the hammer strictly perpendicular to the test surface during impact; take multiple groups of readings on the same area and calculate the average value. Recalibrate the instrument regularly with the standard grinding block.
Q5: Is The Rebound Hammer Suitable For Old Building Safety Assessment?
A: Absolutely. As a non-destructive testing device, it will not damage original building components, making it the primary testing tool for aging building structural strength inspection and reconstruction appraisal projects.
Development History
Founded in 2009 with a registered investment of 3 million RMB, our company secured a firm foothold amid fierce market competition in the early startup phase, supported by sharp market insight and a professional sales team. With continuous technical upgrades and surging global market demand, Wanluda has ramped up investment in product development and expanded our product portfolio year by year, earning remarkable recognition across the industry. Thanks to reliable product quality and consistent positive market reputation, we have gained long-term trust from global partners, expanded our business coverage extensively, and grown into a key domestic manufacturer of testing instruments.
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