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LQH-9 Microcomputer-Servo Asphalt Concrete Low-Temperature Freeze-Break System

The microcomputer-controlled low-temperature freeze‑break test machine is developed by our company using stepper motor technology, refrigeration technology (with imported refrigeration units), sensor technology, and computer‑based data acquisition and processing techniques. It is designed for conducting low‑temperature performance tests on asphalt mixtures.

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Asphalt Concrete Testing Equipment

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lbt@lbt.ltd

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+86-15102211717

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LQH-9 Microcomputer-Servo Asphalt Concrete Low-Temperature Freeze-Break System

Description

Product Introduction:

The microcomputer-controlled low-temperature freeze‑breakage testing machine is developed by our company using stepper motor technology, refrigeration technology (with imported refrigeration units), sensor technology, and computer‑based data acquisition and processing. It is designed for conducting low‑temperature performance tests on asphalt mixtures.

This system, under microcomputer control, can automatically select the temperature‑decrease gradient and the loading rate, and perform automated measurements of temperature, pressure, and displacement while generating corresponding curves and charts. It enables the determination of the fracture temperature, the failure strength, the slope of the thermal‑stress curve, and the temperature at the inflection point.

Reference standard:

DL/T 5362-2018 Test Procedure for Hydraulic Asphalt Concrete, Clause 7.35: Freeze–Thaw Splitting Test for Asphalt Concrete

Technical Specifications:

Parameter Category	Parameter content
Specimen dimensions	(4×4×22) cm
Temperature range	-50℃ to 30℃
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
Loading speed	0.002 mm/min to 10 mm/min
Lifting stroke	0mm～50mm
Digital displacement sensor	Resolution: 0.001 mm; Measuring range: 0 mm to 10 mm
Pressure sensor	0 kN to 10 kN, accuracy: 0.05% F.S.
Temperature sensor	Test range: -50°C to 50°C, accuracy: 0.2°C
Digital display LCD display	1-channel temperature sensor, 1-channel pressure sensor, 2-channel displacement sensor
Microcomputer	Includes data acquisition and processing software for Windows XP, along with a Lenovo-brand desktop computer.
Host dimensions (length × width × height)	(0.4×0.7×1.4) m
Refrigeration system	Imported compressor unit, 3 kW
Ambient temperature	≤30℃
Relative humidity	≤85%
Total system power consumption	4KW
Instrument net weight	400kg
Power supply voltage	220V three-phase four-wire

Software Introduction:

The curve display window shows the experimental process data curve.

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 stand for approximately 24 hours, depending on the adhesive’s curing characteristics. During this period, ensure that the ends of the bonded specimen do not undergo any deformation.

3. The specimen shall be encased in a waterproof membrane, secured to the testing machine frame, and placed in the coolant bath for stress relaxation; relaxation shall be conducted at 20°C for 24 hours. The temperature of the constant‑temperature chamber or the coolant 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 installed, 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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LQH-9 Microcomputer-Servo Asphalt Concrete Low-Temperature Freeze-Break System

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