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5.4-meter and 3.6-meter deflection meters

Name: 5.4-meter and 3.6-meter deflection meters
Brand: Laibote (Tianjin) Testing Machinery
Availability: InStock

It is suitable for determining the resilient deflection of pavement under static loading or very slow‑rate loading, and it effectively reflects the overall strength of the pavement. Pavement deflection refers to the vertical deformation that occurs at the pavement surface under wheel load; it serves as an indicator of pavement strength. The thicker the pavement structure and the higher the strength of the pavement materials or subgrade, the smaller the deflection; conversely, a thinner structure or lower‑strength materials result in greater deflection. Therefore, in pavement design, construction, maintenance, and reinforcement, it is essential to develop an economically viable and technically sound plan. Measuring pavement deflection is an indispensable procedure and has been widely adopted by highway authorities in recent years.

Category:

Pavement, Subgrade, and Aggregate Testing Equipment

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E-mail:

lbt@lbt.ltd

WhatsApp:

+86-15102211717

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5.4-meter and 3.6-meter deflection meters

Description

Product Introduction:

Purpose and Principle: This instrument is suitable for determining the resilient deflection of pavement under static loading or very slow‑rate loading, and it can effectively reflect the overall strength of the pavement.

The pavement deflection value refers to the vertical deformation of the pavement surface under wheel load; it is an indicator of pavement strength. The thicker the pavement structure and the higher the strength of the pavement materials or subgrade, the smaller the deflection value; conversely, the larger the deflection value. Therefore, in pavement design, construction, maintenance, and reinforcement, it is essential to develop a cost-effective and technically sound plan. Measuring pavement deflection is an indispensable method that has been widely adopted by highway authorities in recent years.

The pavement deflection meter is designed based on the principle of leverage and is used to measure the pavement deflection between the dual tires of a vehicle’s rear axle.

Under load, the pavement undergoes localized settlement—i.e., vertical deformation—and the resulting surface response takes on a bowl‑shaped profile centered on the load application point, known as the deflection bowl. Once the load is removed, elastic recovery restores the pavement to its original condition, and the deflection disappears; the difference between the pre‑load and post‑load states is referred to as the deflection value. Experimental evidence shows that the total deflection and the resilient deflection are not identical: even after the load is removed, the deflection bowl does not fully vanish, leaving behind a small residual deformation. Furthermore, the pavement deflection value is closely influenced by factors such as vehicle speed and ambient temperature.

Technical Specifications:

Total length	3600 mm 5400 mm 7200 mm
Leverage ratio	2:1
Length from the fulcrum to the front measurement point	2400 mm 3600 mm 4800 mm
Stiffness	With the center of the shaft hole as the fulcrum, a 200‑g load applied at a distance of 1,200 mm from the fulcrum results in a deflection not exceeding 0.05 mm.

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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

Which materials can be measured by your Vicat softening point tester?

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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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.”

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

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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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