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LSY-23 Concrete Rapid Freeze–Thaw Testing Machine (28) Specimens

It is designed in accordance with the test conditions specified in GB/T 50082-2009 “Standard for Test Methods of Long-Term Performance and Durability of Ordinary Concrete” and SL 352-2006 “Hydraulic Engineering Industry Standards and National Industry Standards”; moreover, it can also perform certain low‑temperature tests down to –40°C as required by the user.

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Concrete Testing Equipment

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lbt@lbt.ltd

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LSY-23 Concrete Rapid Freeze–Thaw Testing Machine (28) Specimens

Description

Product Introduction:

GB/T 50082-2009 “Standard for Test Methods of Long-Term Performance and Durability of Ordinary Concrete”; SL 352-2006 “Standards of the Water Conservancy Industry and National Industry Standards.” The equipment is designed in accordance with the test conditions specified in these standards; it can also perform low‑temperature tests down to –40°C upon customer request. Operating principle: The freeze–thaw resistance of concrete specimens is determined by the number of rapid freeze–thaw cycles they can withstand under water‑freezing, water‑thawing conditions. This method is used to verify the concrete’s frost resistance grade and to calculate its durability coefficient.

Test Objective:

1. The experiment verifies the frost resistance grade of concrete.

2. Calculate and verify the concrete’s durability coefficient.

Technical Specifications:

Model:		LSY-23
Number of specimens		Nine groups of 28 specimens
Condenser cooling method		Air-cooled
Specimen dimensions		100×100×400; the temperature-sensing component has the same dimensions.
Freeze-thaw cycle period		2–4 hours; the melting time shall be no less than one-quarter of a freeze–thaw cycle.
Freezing time/temperature:		1.0–2.5 hours / −18±2℃ (adjustable)
Melting time/temperature:		1.0–2.0 hours / 5±2℃
Recorder		7-inch touch-screen controller
Number of iterations		The standard is 300 counts, with a maximum display of 6 digits.
Specimen bucket dimensions		120120500mm
Temperature sensor control
Sensor 1		Center temperature control: 5 to -18 ± 2°C
Sensor 2 Sensor 3 Sensor 4		Antifreeze temperature control: -25 to 20°C Diagonal temperature control: The temperature variation within the chamber does not exceed 2°C. Secondary protection temperature control: 30°C to -25°C
Temperature difference between the specimen center and surface		Less than 28°C
Refrigeration compressor		Imported, fully enclosed 6P
Heating power		7kw
Maximum operating power		7.8kw
Power supply		380V
Studio dimensions (length × width × height)		1150×800×600
External dimensions	Indoor unit	1600900800
	Outdoor unit	1100900800
Weight		700kg

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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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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?

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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LSY-23 Concrete Rapid Freeze–Thaw Testing Machine (28) Specimens

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