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LSY-18B Fully Automatic Concrete Sulfate Dry–Wet Cycling Test Chamber

Name: LSY-18B Fully Automatic Concrete Sulfate Dry–Wet Cycling Test Chamber
Brand: Laibote (Tianjin) Testing Machinery
Availability: InStock

This equipment is used to evaluate the sulfate‑resistance of ordinary concrete with high strength grades under dry–wet cycling conditions.

Category:

Concrete Testing Equipment

Keywords:

E-mail:

lbt@lbt.ltd

WhatsApp:

+86-15102211717

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LSY-18B Fully Automatic Concrete Sulfate Dry–Wet Cycling Test Chamber

Description

Product Introduction

This equipment is used to evaluate the sulfate‑resistance of ordinary concrete with high strength grades under dry–wet cycling conditions.

Implementation Standard:

GB/T 50082 “Standard for Test Methods of Long-Term Performance and Durability of Ordinary Concrete”; “Test Method for Freeze–Thaw Resistance of Concrete”; RILEM TC 117‑FDC 1995; “Equipment for Freeze–Thaw Testing of Concrete” JG/T 243; “Test Procedures for Hydraulic Concrete” SL/T 352; “Test Procedures for Cement and Cement Concrete in Highway Engineering” JTG 3420.

Features:

1. It can perform immersion, air-drying, oven-drying, and cooling cycles on test specimens.

2. Microcomputer-controlled; the dry–wet cycling process is displayed in real time on an LCD screen.

Technical Specifications:

Parameter Category	Parameter content
Rated voltage	220V
Total machine power	5KW
Heating power	4.5KW
Refrigeration capacity	130W
Pump power	250W
Temperature range inside the box	80±2℃
Soaking time	15 ± 0.5 h (adjustable)
Solution drainage time	0.5 h ± 0.05 h (adjustable)
Air-drying time	0.5 h ± 0.05 h (adjustable)
Drying time	6 h ± 0.1 h (adjustable)
Cooldown time	2 h ± 0.1 h (adjustable)
Total cycle time	24±2h (adjustable)
Soaking solution	5% sodium sulfate (Na₂SO₄)
Concrete test cube dimensions	① 100×100×400mm; ② 100×100×100mm
Maximum specimen capacity	① Can hold 18 pieces (6 sets); ② Can hold 54 pieces (18 sets)
Machine dimensions	1470×760×1020mm
Solution tank dimensions	840×440×610mm

Test procedure:

Concrete specimens are removed from the standard curing chamber, dried, and then placed in a dry–wet testing chamber (the reservoir must be filled at once with 160 kg of a 5% sodium sulfate solution). The specimens are evenly arranged on the rack, with a 30 mm gap maintained between each specimen.

2.1 Specimen Immersion: The solution level shall extend at least 5 mm above the specimen surface, and the specimen shall be immersed for 16 ± 0.5 hours.

2.2 Drying the Specimens: After soaking is complete, the drain valve automatically opens; within 30 minutes, drain the solution completely and allow the specimens to dry, starting from the drain…

The total time required for the liquid to dry on the specimen is 1 hour.

2.3 Drying of Specimens: After air-drying is complete, proceed with oven drying. Raise the specimen temperature to 80°C ± 5°C and maintain this temperature for 6 hours.

2.4 Specimen Cooling: After drying is complete, the refrigeration system is activated to bring the temperature inside the specimen chamber close to room temperature.

Note 1: In the container used for soaking the specimens, the ratio of the volume of the solution to the volume of the specimen shall be maintained at 3 ± 0.1.

Note 2: During the test, the pH of the solution should be checked regularly—typically once a week during the first month, and thereafter at intervals of…

Perform 15 cycles, maintaining the solution’s pH between 6 and 8 and its temperature within the range of 20–25°C.

After the specimen has cooled to room temperature, complete one dry–wet cycling test cycle, then immerse it in the solution and proceed according to steps 2.1–2.4 described above.

The method proceeds to the next wet–dry cycle.

2.5 At each set of ten wet–dry cycles, perform a weighing test on the specimen under test, concurrently conduct a compressive or flexural strength test, and inspect the surface for any signs of damage.

2.6 During the dry–wet cycling test, an equal number of specimens shall be prepared and subjected to standard curing as a reference for compressive strength testing or…

Control specimens for flexural strength. The test shall be terminated when the corrosion resistance coefficient of mass is below 95%, or when the corrosion resistance coefficient of compressive strength (cube specimens) falls below 85%, or when the corrosion resistance coefficient of flexural strength (prismatic specimens) drops below 70%, or upon reaching 50 dry–wet cycles.

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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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Customer Reviews

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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.”

Middle East Construction Lab｜Purchase: Universal Electronic Testing Machine & Geotextile Test Equipment

From Mohamed Kareem, Lab Manager, UAE third-party construction inspection institute

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“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 Thomas Bennett, Quality Director, UK plastic pipe factory

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★★★★★

“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.”

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