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LBT-II Concrete Thermal Conductivity Tester (Thermal Performance Measuring Instrument)

The instrument is characterized by its simple design, high accuracy, and rapid testing speed—approximately ten minutes per test. In a single run, it can simultaneously determine the material’s thermal conductivity, thermal diffusivity, and specific heat, and it is capable of measuring thermophysical properties under various moisture contents.

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Concrete Testing Equipment

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lbt@lbt.ltd

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+86-15102211717

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LBT-II Concrete Thermal Conductivity Tester (Thermal Performance Measuring Instrument)

Description

Product Introduction

The instrument is characterized by its simple design, high accuracy, and rapid testing speed—approximately ten minutes per test. It can simultaneously determine a material’s thermal conductivity, thermal diffusivity, and specific heat in a single measurement, and it is capable of assessing thermophysical properties under various moisture conditions. Reference standards include: JGJ/T 12‑2019 (replacing JGJ 51‑2002, “Technical Specification for Lightweight Aggregate Concrete”), JG 158‑2004 “External Thermal Insulation System with Rubber Powder and Expanded Polystyrene Granules,” and Appendix B of JG/T 283‑2010 “Lightweight Mortar with Expanded Vitrified Microspheres,” which specifies methods for determining the heat storage coefficient; JG/T 511‑2017, Annex A, “Test Method for Heat Storage Coefficient of Foamed Ceramic Insulation Boards”; GB/T 26000‑2010, “Method for Determining the Heat Storage Coefficient in Expanded Vitrified Microsphere Insulating and Thermal‑Insulating Mortar”; and GB/T 20473‑2021, “Building Insulation Mortar,” Annex D, which sets forth requirements for testing the heat storage coefficient.

Scope of application:

This instrument is suitable for determining the thermal conductivity, thermal storage coefficient, thermal diffusivity, and specific heat capacity of homogeneous plate‑like, gel‑like, powdered, or granular materials under dry conditions or at various moisture contents. The thermal conductivity of the test material ranges from 0.035 to 1.7 W/m·K. Based on the principle of unsteady‑state heat conduction, a brief heating pulse is applied to the sample, inducing a temperature change. By analyzing the characteristics of this temperature response and solving the corresponding heat conduction differential equation, the thermal storage coefficient, thermal conductivity, thermal diffusivity, and specific heat of the material can be calculated.

Technical Specifications:

Project	Content
Specimen size	One thin specimen: 20 × 20 × (1.5–3) cm Two thick specimens: 20×20×(4–10) cm
Power supply	~220V, 50Hz
External dimensions	Length × Width × Height: 600×450×700 (mm)
Working conditions	① Ambient temperature: 10–35°C ② Relative humidity: ≤80% ③ Room temperature must be stable: ≤±1.5℃
Measurement accuracy	±5%

Includes one host unit, one software package, one heater, one thermocouple set, one insulated container, and one data cable set.

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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.

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-II Concrete Thermal Conductivity Tester (Thermal Performance Measuring Instrument)

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