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SY-3 Type Pressure Water Bleeding Tester

The pressure bleeding apparatus is an instrument used to measure the pressure‑induced bleeding of pumped concrete.

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Concrete Testing Equipment

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lbt@lbt.ltd

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+86-15102211717

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SY-3 Type Pressure Water Bleeding Tester

Description

Product Introduction

The pressure bleeding apparatus is an instrument used to measure the pressure‑induced bleeding of pumped concrete. It offers advantages such as accurate readings, simple operation, compact size, and easy demolding. All performance parameters of this instrument have been verified by relevant research institutions and found to comply with the national standard JC 473‑2001. The main components of the pressure bleeding apparatus include a pressure gauge, hydraulic cylinder, manual oil pump, cylinder body, working piston, and sieve screen.

Technical Specifications:

(Sieve aperture: 0.315 mm)

Pressure gauge (0–6 MPa) 2—Three-way connector 3—(for connecting the manual oil pump) oil delivery pipe fitting
Hydraulic cylinder, inner diameter 40 mm; 5—top cover; 6—pivot bolt; 7—bolt pin; 8—cylinder body, inner diameter 125 mm, height 200 mm; 9—pivot bolt; 10—base; 11—screen plate; 12—O-ring seal; 13—screen plate; 14—piston seal; 15—piston, diameter 125 mm; 16—sieve with apertures of 0.315 mm; 17—drain valve.

Test Procedure

Place the concrete mix into the test cylinder, and use a tamping rod to evenly tamp 25 times, moving from the periphery toward the center. Then, assemble the apparatus according to the prescribed procedure. Apply pressure to the concrete as quickly as possible up to 3.0 MPa, immediately open the bleed‑water outlet valve, start timing simultaneously, and maintain constant pressure. Collect the bleeding water in a graduated cylinder, and after maintaining pressure for 10 seconds, record the volume of bleeding water, V. _10, After pressurizing for 140 seconds, measure the water permeation volume V. ₁₄₀。

Computation and Evaluation:

The pressure bleeding rate is calculated according to Equation (1):

B _P = ×100 ………………（1）

B _P— Pressure bleeding rate, %

V _10— Water output at 10 seconds of pressurization, mL

V _140— Water yield at a pressure of 140 s, mL

The results are expressed as the average of three trials, rounded to 0.1%.

After the test is completed, unscrew check valves 1 and 2 in sequence by turning them counterclockwise to relieve pressure. Remove the lower base, place the upper section on the demolding frame, tighten the check valves clockwise, and apply pressure. Once the concrete specimen and piston have automatically detached, turn check valve 1 counterclockwise to release pressure, then open the upper section to retract the jack piston, thereby completing one test cycle.

Maintenance Precautions

1. After each experiment, rinse the instrument with water and wipe it dry. If the instrument will not be used for an extended period, apply a thin layer of oil to its interior surfaces to prevent rusting.

2. If the oil pump is low on oil and cannot build pressure, remove the rear cover of the pump, unscrew the hex socket bolt, add oil, and then reseal it.

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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

★★★★★

“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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SY-3 Type Pressure Water Bleeding Tester

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