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LBT-1B30A Microcomputer-Controlled Universal Testing Machine for Asphalt Mixture Servo Low-Temperature Constrained Stress Freeze‑Breakage Tests

This system was developed in accordance with the Ministry of Transport’s “Test Specifications for Asphalt and Asphalt Mixtures in Highway Engineering, JTG 3410-2025,” the Ministry of Water Resources’ “DL/T 5362-2018 Test Specifications for Hydraulic Asphalt Concrete,” and the requirements of relevant research institutes.

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Asphalt Mixture Testing Equipment

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lbt@lbt.ltd

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+86-15102211717

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LBT-1B30A Microcomputer-Controlled Universal Testing Machine for Asphalt Mixture Servo Low-Temperature Constrained Stress Freeze‑Breakage Tests

Description

Product Introduction:

This system was developed in accordance with the Ministry of Transport’s “Test Specifications for Asphalt and Asphalt Mixtures in Highway Engineering, JTG 3410‑2025,” the Ministry of Water Resources’ “DL/T 5362‑2018 Test Specifications for Hydraulic Asphalt Concrete,” and the requirements of relevant research institutes. It incorporates imported servo‑motor drive and control technology, electronic engineering, computer data‑processing techniques, and refrigeration technology. Equipped with a variety of sensors and fixtures, it can perform the following tests: tensile testing of asphalt concrete, flexural testing of asphalt concrete beams, freeze‑breakage testing of asphalt concrete, and low‑temperature performance testing of asphalt mixtures (TSRST method). By using other fixtures manufactured by our company, additional mechanical‑property tests under vertical loading can also be conducted. The test system is driven by an imported servo motor that provides stepless speed regulation for both loading and unloading; test results are acquired via sensors, and the entire testing process is automatically controlled by a microcomputer running on the Windows operating system. It is currently the most versatile domestic apparatus for measuring the mechanical properties of asphalt mixtures, suitable for research and production testing at research institutes and universities.

Technical Specifications:

Parameter item	Parameter value
Loading speed	0.005 ~ 50 mm/min (stepless speed regulation)
Displacement compensation	The deformation is close to 2 μm, with a step size of 0.05 μm, and the initial height is retracted.
Maximum load	100kN
Effective space/effective stroke of the two-column host	550mm / 750mm
Host dimensions	98×60×209cm
Environmental chamber	It consists of an environmental chamber, a refrigeration system, and a heating system, among other components.
Workspace	500×500×600mm
Operating temperature	-55℃ to 150℃, temperature control accuracy ±0.5℃
Cooling rate of temperature	5℃/h ± 0.5℃/h, 10℃/h±0.5℃/h, 15℃/h±0.5℃/h, 30℃/h ± 0.5℃/h, optional
Temperature sensor test range	-50°C to 50°C, resolution 0.1°C, accuracy ±0.2°C;
Pressure sensor	Two models are available: 100 kN and 10 kN, with an accuracy of 0.05% FS.
Low-Temperature Performance Test Deformation Gauge (Freeze‑Break)	Deformation measurement range ≥ ±2.5 mm, accuracy ±0.5 μm, resolution 0.1 μm;
Low-Temperature Performance Test Fixture	The connecting rod, fixture, and strain‑measurement material are made of Invar steel rods with a diameter of 6 mm ± 1 mm and a length of 210 mm ± 5 mm.
Measurement range and accuracy of capacitive grating displacement sensors	0–25 mm; accuracy 0.03 mm 0–50 mm, accuracy 0.04 mm (compatible)
Controller	It supports three‑loop closed‑loop control for force, displacement, and deformation, features three 16‑bit A/D channels, and offers a data acquisition rate of ≥60 Hz.
Computer and Peripheral Configuration	Intel Core i5 processor, 16 GB RAM, 320 GB hard drive, touchscreen monitor; HP monochrome laser printer, computer desk; running Windows control and processing software.
Total power	Approx. ≤6kW
Power supply voltage	380V 50Hz

Software Introduction:

Basic experimental procedure:

1. Prepare test specimens in accordance with the standard. The specimen dimensions shall be 200 mm to 400 mm × 40 mm × 40 mm, with dimensional tolerances of ±2 mm for length, ±1 mm for width, and ±1 mm for height.

2. Secure the specimen in the specimen holder using a high‑strength adhesive. After bonding, allow the specimen to cure for approximately 24 hours, depending on the adhesive’s properties. During curing, ensure that the specimen, with adhesive applied to both ends and secured in the holder, does not undergo any deformation.

3. The specimen shall be encased in a waterproof membrane, secured to the testing frame, and placed in the cooling‑fluid test tank for stress relaxation; relaxation shall be conducted at 20°C for 24 hours. The temperature of the constant‑temperature chamber or the cooling‑fluid bath shall be maintained at the initial freezing‑breakage test temperature of 10°C for 1 hour.

4. Adjust the fixture distance to install the test specimen.

5. Adjust the bolts at the base of the fixture to apply a specified level of prestress to the specimen.

6. After the specimen is properly mounted, cool it at the specified cooling rate; if no specific rate is prescribed, a rate of 30°C/h may be used. Measure and record the temperature, stress, and displacement during the cooling process.

7. When the specimen fractures due to a sudden reduction in thermal stress at a specific temperature, the test automatically terminates.

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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

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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LBT-1B30A Microcomputer-Controlled Universal Testing Machine for Asphalt Mixture Servo Low-Temperature Constrained Stress Freeze‑Breakage Tests

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