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LBTY-3D Aggregate Soundness Testing Apparatus (Instrument)

The aggregate soundness testing apparatus complies with the JTG 3432-2024 standard and is used to evaluate the performance of crushed stone or gravel subjected to repeated cycles of immersion in saturated sodium sulfate solution followed by drying, assessing its ability to withstand the expansive pressure generated by sodium sulfate crystallization without significant damage or reduction in strength. This method determines the soundness—also referred to as stability—of the aggregate.

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Pavement, Subgrade, and Aggregate Testing Equipment

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lbt@lbt.ltd

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+86-15102211717

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LBTY-3D Aggregate Soundness Testing Apparatus (Instrument)

Description

Product Introduction:

The aggregate soundness testing apparatus complies with the JTG 3432-2024 standard and is used to evaluate the ability of crushed stone or gravel to withstand repeated cycles of immersion in saturated sodium sulfate solution followed by drying, without sustaining significant damage or a substantial reduction in strength due to the expansive pressure generated by sodium sulfate crystallization. This method is employed to determine the soundness (also referred to as stability) of aggregates.

Technical Specifications:

Project	Details
Container	55L stainless steel container
Coarse aggregate three-legged wire basket	The mesh basket has an outer diameter of 100 mm, a height of 150 mm, and three openings with a diameter of 2.36 mm. The basket has an outer diameter of 250 mm, a height of 250 mm, and an aperture of 2.36 mm (1 unit).
Fine aggregate three-legged wire basket	The mesh basket has an outer diameter of 70 mm, a height of 70 mm, and apertures of 0.15/0.315/0.6/1.18 mm; it is made of stainless steel (one each).
Power supply voltage	220V
Heating power	1500W
Refrigeration capacity	1000W
The temperature should be maintained within a certain range.	21±1℃
Number of lifts	25 times
Functionality	It can automatically heat and maintain a constant temperature, with automatic control and recording of the number of cycles and the holding time.

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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

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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LBTY-3D Aggregate Soundness Testing Apparatus (Instrument)

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Address:Tianjin Jinghai Economic Development Zone

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