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ZC5 Mortar Rebound Hammer

Name: ZC5 Mortar Rebound Hammer
Brand: Laibote (Tianjin) Testing Machinery
Availability: InStock

The ZC5 mortar rebound hammer is a pointer-type, direct-reading rebound tester independently developed and designed by our factory.

Category:

Non-Destructive Testing Equipment for Construction

Keywords:

E-mail:

lbt@lbt.ltd

WhatsApp:

+86-15102211717

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Description

Product Description:

The ZC5 mortar rebound hammer is a pointer‑type, direct‑reading rebound instrument independently developed and designed by our factory. This product employs a tension spring to drive the impact hammer, which acts on the mortar surface via an impact rod. During the instantaneous elastic deformation of the mortar, the restoring force causes the impact hammer to pull back the pointer, thereby indicating the rebound distance. The rebound value is one of the key indicators for assessing the compressive strength of mortar and can be used to estimate the compressive strength and grade of masonry mortar in ordinary sintered bricks or sintered porous brick masonry. However, it is not suitable for estimating the strength of masonry mortar subjected to high temperatures, prolonged water immersion, fire, or environmental erosion. In accordance with the national industry standard ZC5, this mortar rebound hammer is applicable for strength testing within the range of 2 to 15 MPa.

Applicable Standard:

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

National Standard of the People’s Republic of China: Rebound Hammer, GB/T 9138

Standard for On-site Testing of Masonry Works, GB/T 50315

Technical Specifications:

Project	Parameter
Nominal kinetic energy	0.196J
The extension length of the firing tension spring	75±0.3 mm
Friction of the pointer slider	0.5±0.1N
Effective length of the firing mainspring	61.5±0.3 mm
Hammer release position	Mark the <100> position on the scale.
The spherical radius at the tip of the clubhead	R25±1 mm
Hammer release position	Between “0” and “1” on the scale
Anvil calibration value	74±2

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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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It measures heat deflection temperature and Vicat softening temperature of plastics, hard rubber, nylon, insulating materials and fiber-reinforced thermosetting composites. Intelligent temperature control guarantees precise heating rate, ideal for plastic raw material incoming inspection and formula development in plastic factories.

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.

What kinds of pipes fit your ring stiffness tester? Can it do long-term creep testing?

This equipment is designed for HDPE, PVC corrugated pipes, plastic drainage pipes and various plastic tubular products. Apart from ring stiffness, ring flexibility and flattening tests, it supports continuous long-term creep tests up to 1000 hours (42 days) as required by industry specifications, widely used for pipe factories and construction quality inspection institutes.

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

Our WDW universal tester is applicable for tension, compression, bending, shearing and peeling tests of metal, plastic, rubber and composite materials. It supports test procedures in accordance with GB, ISO, ASTM, DIN, JIS multiple domestic and global standards. Equipped with high-precision servo drive and dedicated test software, it automatically collects, calculates and exports test data including tensile strength, elongation at break and elastic modulus.

Customer Reviews

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“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.”

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

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

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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.”

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