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LSY-30 Concrete Air Void Spacing Coefficient Tester (Economy Model)

The LSY‑30 hardened concrete air-void spacing coefficient analyzer is primarily used to investigate the effects of air-entraining agents on concrete air‑void characteristics, the relationships between these characteristics and mix proportions, and the correlations between the air‑void spacing coefficient and freeze–thaw durability indicators.

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Concrete Testing Equipment

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E-mail:

lbt@lbt.ltd

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+86-15102211717

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LSY-30 Concrete Air Void Spacing Coefficient Tester (Economy Model)

Description

Product Introduction:

The LSY-30 Hardened Concrete Air‑Void Spacing Coefficient Analyzer is primarily designed for research on the effects of air‑entraining agents on concrete’s air‑void characteristics, the relationships between these characteristics and mix proportions, and the correlations between the air‑void spacing coefficient and freeze–thaw durability. Its data‑acquisition software features a user‑friendly interface and enables rapid measurement of parameters such as air content (vo1%), average air‑void chord length, average air‑void radius, specific surface area of air voids, air‑void spacing coefficient, and total number of air voids. The software supports multiple data formats and can store images, photographs, and other file types.

Product Features:

Detection method: Straight-line wire method

Test metrics: number of bubbles, bubble diameter, bubble spacing coefficient, etc.

Implementation Standard:

1. TB/T3275 Railway Concrete

2. SL352-2006 Test Procedures for Hydraulic Concrete

3. TB1005 Code for Durability Design of Railway Concrete Structures

4. TB 10424 Standard for Acceptance of Construction Quality of Railway Concrete Works

5. JTG 3420-2020 Specifications for Testing of Cement and Cement Concrete in Highway Engineering

Technical Specifications:

1. Microscope resolution: <2 µm

2. Microscope magnification: 100–120×

3. Microscope illumination: large lampshade, concentrator-type with diffused reflection

4. Stage movement: accuracy < 2 µm

5.弦长测试范围: >0.01mm

Experimental Procedure:

1. Cut a 20-mm segment from a specimen with a cross-section of 100 mm × 100 mm, and clean it thoroughly.

2. On a 100 mm × 100 mm observation surface, carefully grind using 400‑grit and 800‑grit silicon carbide abrasive papers, respectively. After each grinding step, thoroughly rinse the surface before proceeding to the next step.

3. After thorough washing, dry in an oven at 105°C ± 5°C.

4. Use a broad‑tip black oil‑based marker to completely blacken the observation surface of the specimen, continuing until the specimen’s original color is no longer visible.

5. Fill the bubbles with white calcium carbonate powder having a particle size of less than 10 µm, then use a blade to remove any excess material from the surface.

6. Place the sample under the camera and observe: when an appropriate light source illuminates the observation surface at a low angle of incidence, the surface appears essentially flat, with clear bubble boundaries and visible aggregate pores; in this case, the observed cross-section can be considered properly prepared.

Related Product

HC-40 Concrete Multi-functional Strength Tester

The HC-40 concrete multi-functional strength tester is a high-performance testing device integrating multiple advanced technologies, specifically designed for evaluating the strength and quality of concrete.

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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Customer Reviews

European Plastic Pipe Manufacturer｜Purchase: Ring Stiffness & Hydrostatic Burst Tester

From Thomas Bennett, Quality Director, UK plastic pipe factory

2026.06.05

★★★★★

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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.”

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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.”

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LSY-30 Concrete Air Void Spacing Coefficient Tester (Economy Model)

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