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Standard manual heavy compactor, 4.5 kg; light compactor, 2.5 kg; soil compaction tester

The soil compaction apparatus is a core, standard instrument in geotechnical testing. It determines the optimum moisture content and maximum dry density of soil at various moisture levels using a standardized hammer‑drop method, providing critical control parameters for the compaction of fill materials in subgrades, embankments, building foundations, and other engineering applications. Widely used in highways, railways, water conservancy, construction, and related fields, it complies with national standards such as GB/T 50123‑2019 “Standard for Geotechnical Test Methods” and JTG E40‑2007 “Highway Geotechnical Testing Procedures.” It is employed for manual compaction during the preparation of geotechnical test specimens—specimens that are subsequently used in bearing ratio tests, resilient modulus tests, and other assessments—to determine the optimum moisture content and unit weight of compacted soils, serving as the basis for controlling soil moisture and establishing minimum density requirements in subgrade construction and fill operations.

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Geotechnical and Soil Testing Equipment

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lbt@lbt.ltd

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+86-15102211717

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Standard manual heavy compactor, 4.5 kg; light compactor, 2.5 kg; soil compaction tester

Description

Product Introduction

The soil compaction apparatus is a core, standard instrument in geotechnical testing. It determines the optimum moisture content and maximum dry density of soil at various moisture levels through a standardized hammer‑impact method, providing critical control parameters for the compaction of fill materials in subgrades, embankments, building foundations, and other engineering applications. Widely used in highways, railways, water conservancy, construction, and related fields, it complies with national standards such as GB/T 50123‑2019 “Standard for Geotechnical Test Methods” and JTG E40‑2007 “Highway Geotechnical Testing Procedures.” It is employed for manual compaction during the preparation of geotechnical test specimens—specimens that are subsequently used in tests such as the California Bearing Ratio (CBR) and resilient modulus tests—to ascertain the optimum moisture content and unit weight of compacted soils, serving as the basis for controlling soil moisture and establishing minimum density requirements in subgrade construction and earthfill operations.

Technical specifications:

Device Type	Parameter Category	National standard parameters	Ministry-standard parameters
Lightweight compaction apparatus	Casing height	50mm	50mm
	Hammer base diameter	51mm	50mm
	Hammer weight	2.5kg	2.5kg
	Drop height	305mm	300mm
	Inside diameter of the compaction cylinder	102mm	100mm
	Compaction cylinder height	116mm	127mm
	Compaction cylinder volume	947.4 cm³	997 cm³
Heavy compaction apparatus	Casing height	50mm	50mm
	Hammer base diameter	51mm	50mm
	Hammer weight	4.5kg	4.5kg
	Drop height	457mm	450mm
	Inside diameter of the compaction cylinder	152mm	152mm
	Compaction cylinder height	116mm	170mm
	Compaction cylinder volume	2103.9 cm³	2177 cm³

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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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Standard manual heavy compactor, 4.5 kg; light compactor, 2.5 kg; soil compaction tester

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