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ZC450-U Color-Screen Digital High-Strength Concrete Rebound Hammer

This device is used for nondestructive testing of the compressive strength of concrete structural members in buildings.

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Non-Destructive Testing Equipment for Construction

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lbt@lbt.ltd

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+86-15102211717

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ZC450-U Color-Screen Digital High-Strength Concrete Rebound Hammer

Description

Product Introduction:

This device is specifically designed for nondestructive testing of the compressive strength of concrete members in buildings, bridges, tunnels, and other structures. It can significantly enhance the efficiency of rebound‑based testing and reduce the workload of testing personnel. It is suitable for assessing the strength of concrete structures or members within the 50–100 MPa range.

Product Features:

● Compact, modular design for easy replacement of the mechanical rebound hammer.

● Employs a new non-contact CMOS image sensor, offering longer service life and higher testing accuracy, with readout consistency ≤ 0.5.

● 2.0-inch HD color screen, with a sleek interface and richer display content.

● Built-in temperature and humidity sensor for monitoring environmental conditions

● Built-in gyroscope module that automatically detects impact angles and corrects rebound values.

● Built-in high-capacity, rechargeable 18650 lithium-ion battery with long runtime; under normal operating conditions, a full charge can support up to 20 hours of continuous operation.

● Built-in high-capacity memory capable of storing up to 999 components, with each component configurable with up to 99 measurement zones.

● Built-in national standard strength curves and multi‑regional strength curves; supports real-time display of strength values and automatically presents the estimated strength of the component upon test completion.

● Supports voice announcements of readings and voice prompts for switching measurement areas.

● Supports resuming testing from the breakpoint, delivering a more user-friendly data collection experience.

● Supports Chinese input, with two built-in input methods—Quick Keyboard and Pinyin Keyboard—for greater convenience.

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● Via a wired connection and in conjunction with data-processing software on the computer, test data can be rapidly processed and test reports generated.

● System upgrades are supported; based on user feedback, our company will regularly update the system to enhance the user experience.

● Supports Bluetooth connectivity; can be paired with a mobile app to collect rebound test data in the cloud, or connected to a Bluetooth thermal printer for on-site data printing (printer sold separately).

● Supports customizable features; can tailor a dedicated transmission protocol to meet customer requirements.

Meets the standard:

People’s Republic of China National Metrological Verification Regulation “Rebound Hammer” JJG 817-2011

National Standard of the People’s Republic of China “Rebound Hammer” GB/T 9138-2015

Technical Specification for Testing Concrete Compressive Strength by the Rebound Method, JGJ/T 23-2011

Technical Specifications:

Parameter	Specification Details
Nominal kinetic energy	4.5J
Impact tension spring stiffness	900 ± 40 newtons per meter
Effective length of the impact tension spring	106±0.5 mm
Extended impact tension spring	100±0.5 mm
Radius of the impact sphere of the impact rod	R35±1 mm
Pointer friction force	0.65±0.15N
Anvil calibration value	88±2
Indication consistency	≤±0.5
Operating temperature	-4℃ ~ +40℃
USB communication rate	115200bps
Bluetooth communication rate	115200bps
Display	2.0-inch 240×320 high-definition LCD display
Power supply	3,200 mAh, 3.7 V lithium-ion battery
Runtime	≥20 hours
Charger specifications	Input: AC 220 V / 50 Hz; Output: DC 5 V / 1 A

Related Product

HC-40 Concrete Multi-functional Strength Tester

The HC-40 concrete multi-functional strength tester is a high-performance testing device integrating multiple advanced technologies, specifically designed for evaluating the strength and quality of concrete.

FAQs

Do you supply full-set testing instruments for asphalt and geotechnical engineering projects?

We offer complete lab solutions including asphalt viscosity tester, asphalt rutting tester, geotextile permeability tester, low-temperature flexibility tester and concrete/cement test equipment, covering raw material detection for road, water conservancy and construction engineering projects

Can you customize fixtures or test machines based on our special test requirements? How about after-sales service and warranty?

We provide non-standard customization of test equipment and customized fixture clamps according to customers’ specimen size and test standards. All our testing machines enjoy 12-month factory warranty; overseas customers get remote online debugging guidance, spare parts supply and technical operation training. Our products have been exported to over 70 countries globally

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Does your pipe pressure burst testing machine control test temperature automatically? What’s its main application?

Yes, the constant-temperature circulating system keeps stable test environment during long-time hydrostatic resistance and instant burst pressure measurement of thermoplastic pipes. It complies with GB6111 standard and serves raw material inspection, new product R&D for plastic pipe manufacturers, third-party testing labs and university laboratories.

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What test items can your WDW series computer-controlled electronic universal testing machine complete? Which international standards can it meet?

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Customer Reviews

European Plastic Pipe Manufacturer｜Purchase: Ring Stiffness & Hydrostatic Burst Tester

From Thomas Bennett, Quality Director, UK plastic pipe factory

2026.06.05

★★★★★

“We have purchased two sets of pipe testing equipment from Laibote (Tianjin) for 18 months. The ring stiffness and hydrostatic burst testing machines run stably for daily batch inspection, test data matches ISO standard requirements precisely, and the intelligent test software is easy for our operators to master. Their after-sales team offers timely remote technical guidance whenever we have operational problems, spare parts supply is efficient. We have arranged a second bulk order for our new production workshop and will recommend Laibote’s testing machines to our industry partners across Europe.”

Middle East Construction Lab｜Purchase: Universal Electronic Testing Machine & Geotextile Test Equipment

From Mohamed Kareem, Lab Manager, UAE third-party construction inspection institute

2026.06.05

★★★★★

“We compared multiple testing equipment brands from Europe and China before cooperating with Laibote. Their WDW universal tester and full-set geotextile testing instruments meet local construction testing standards perfectly. Custom fixtures tailored per our specimen specifications save much testing time. Pre-sale technical communication was patient and professional; engineers provided online operation training after goods arrived. Stable machine performance greatly improves our laboratory’s detection efficiency, we are satisfied with cost performance and overall service.”

Southeast Asia Rubber & Polymer Factory｜Purchase: Vicat Softening Point & Tensile Testing Machine

From Tanaka Hiroshi, R&D Supervisor, Indonesia rubber materials enterprise

2026.06.05

★★★★★

“Laibote’s Vicat softening point tester and electronic tensile machine have been applied to our raw material incoming inspection and new formula development for over one year. High testing accuracy effectively controls our product defect rate. What impresses us most is their responsive after-sale service; technical staff reply our troubleshooting requests within 24 hours even for time zone differences. Compared with expensive European brands, Laibote’s equipment balances quality and price excellently, we plan to expand procurement of auxiliary testing instruments next quarter.”

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Keywords:

ZC450-U Color-Screen Digital High-Strength Concrete Rebound Hammer

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E-mail:lbt@lbt.ltd

Address:Tianjin Jinghai Economic Development Zone

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