Home page

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

Name: LSY-30 Concrete Air Void Spacing Coefficient Tester (Economy Model)
Brand: Laibote (Tianjin) Testing Machinery
Availability: InStock

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.

Category:

Concrete Testing Equipment

Keywords:

E-mail:

lbt@lbt.ltd

WhatsApp:

+86-15102211717

Consult

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

WSC-300 Microcomputer-Controlled Steel Strand Stress Relaxation Testing Machine

The WSC-300 microcomputer-controlled steel strand stress relaxation testing machine employs servo control technology and computer-based data acquisition and processing, enabling closed-loop control and automated testing. It comprises four main components: the testing frame, the servo control system, the measurement and control system, and the test fixtures. With a maximum test force of 300 kN, the machine achieves an accuracy class better than 0.5.

YLZ-100 Microcomputer-Controlled Electro-Hydraulic Servo Curbstone Flexural Testing Machine

The YLZ-100 concrete curbstone flexural‑compressive testing machine is used to determine the flexural strength and flexural load of linear curbstones with a length of 1000 mm, as well as the compressive strength of curved curbstones and L‑shaped curbstones with a straight cross‑section. In accordance with JC/T 899‑2016 Concrete Curbstones, it can also be employed to conduct experimental studies on the flexural and compressive strengths of other materials.

WDW Dual-Column Microcomputer-Controlled High- and Low-Temperature Electronic Universal Testing Machine (with Video Extensometer)

The microcomputer-controlled high‑ and low‑temperature electronic universal testing machine consists of the testing machine mainframe, fixtures, a high‑ and low‑temperature chamber, and computer software. The temperature chamber is slid into the mainframe; after opening the chamber door, the specimen is secured in the dedicated fixture. The chamber then heats or cools until the specified temperature is reached.

WDW—Dual-Column Microcomputer-Controlled Electronic Universal Tensile Testing Machine (20 kN)

This machine can perform tests such as tensile, compressive, flexural, tear, 90° peel, 180° peel, shear, adhesion, pull-out force, and elongation at break on rubber, plastics, foamed materials, synthetic resins, films, alloy materials, and other non-metallic and metallic materials.

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

Which materials can be measured by your Vicat softening point tester?

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

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.”

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.”

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.”

Consult

We will contact you within one working day. Please pay attention to your email.