Concrete Screed

Product Specifications

Technical details and manufacturing context for Concrete Screed

Definition

A concrete screed is a mechanical or manual construction device designed to level, compact, and smooth freshly placed concrete slabs. It operates by moving across the wet concrete surface, typically guided by rails or forms, to remove excess material, fill low spots, and create a uniform plane with the desired elevation and surface texture. Screeds are essential for achieving proper floor flatness, ensuring structural integrity, and preparing surfaces for subsequent finishing operations. The device typically consists of a rigid beam or blade, often made of steel or aluminum, which is dragged or vibrated across the concrete. Mechanical screeds incorporate a vibrating mechanism that oscillates at a frequency typically between 50 and 100 Hz, with an amplitude of 0.5 to 2.0 mm, to consolidate the concrete and bring fines to the surface. The working width, or the maximum width of concrete that can be leveled in one pass, ranges from 600 to 1500 mm, depending on the model. Motor power for mechanical units is typically between 2.2 and 5.5 kW, and the total weight of the screed assembly ranges from 80 to 250 kg. The maximum concrete depth that can be effectively leveled is typically between 150 and 300 mm. Operating pressure, as per is in the range of 1.0 to 1.6 MPa, and the power supply is 220–240 V AC, single-phase or three-phase depending on the model, with a frequency of 50–60 Hz. The ingress protection rating is IP54 to IP65 per IEC 60529, and the operating temperature range is -10 to 50 °C. Noise levels, measured according to ISO 11201, are typically between 80 and 95 dB(A), requiring hearing protection above 85 dB(A). These specifications are reference ranges; verify model-specific values with the manufacturer.

Working Principle

The screed works by applying a combination of vibration, oscillation, or simple dragging action to the concrete surface. Mechanical screeds typically use a vibrating beam or rotating shaft that agitates the concrete, causing it to settle and level under its own weight while pushing excess material forward. The screed is pulled or propelled across the surface, guided by preset rails or laser controls to maintain precise elevation. This process eliminates air pockets, consolidates the concrete, and creates a smooth, level plane ready for final finishing.

Common Materials

Steel, Aluminum

Technical Parameters

Parameter	Typical range	Notes & selection driver
Working WidthRequired	600–1500 meters	Maximum width of concrete surface that can be leveled in one pass
Vibration FrequencyRequired	50–100 Hz	Oscillation rate of the vibrating mechanism for concrete consolidation
Motor Power	2.2–5.5 kW	Power output of the drive motor for mechanical screeds
WeightRequired	80–250 kg	Total weight of the screed assembly
Maximum Concrete DepthRequired	150–300 mm	Maximum thickness of concrete layer that can be effectively leveled
Power Supply	220–240 V AC	Single-phase or three-phase depending on model.
Frequency	50–60 Hz	Compatible with mains supply.
Ingress Protection	IP54–IP65	Protects against dust and water jets.IEC 60529
Operating Temperature	-10–50 °C	Outside this range, performance may degrade.
Noise Level	80–95 dB(A)	Hearing protection required above 85 dB(A).ISO 11201
Vibration Amplitude	0.5–2.0 mm	Affects surface finish and compaction.

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM

Screed Beam
Primary leveling surface that contacts and smooths the concrete

Material: Steel or aluminum alloy
Vibration Mechanism
Generates oscillations to consolidate and settle the concrete

Material: Steel with vibration motor
Drive Motor
Provides power for mechanical screed movement and vibration

Material: Electric or gasoline engine components
Control Handle
Operator interface for guiding and controlling the screed

Material: Steel with rubber grip
Leveling Rails
Guide system that ensures precise elevation control during operation

Material: Aluminum or steel

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Concrete Screed.

Manufacturers of Concrete Screed

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Frequently Asked Questions

What is the typical working width of a concrete screed?

The working width, or the maximum width of concrete that can be leveled in one pass, typically ranges from 600 to 1500 mm, depending on the model. Always verify the specific working width with the manufacturer for your intended application.

What vibration frequency and amplitude are common for mechanical screeds?

Mechanical screeds typically operate at a vibration frequency of 50 to 100 Hz and an amplitude of 0.5 to 2.0 mm. These parameters affect concrete consolidation and surface finish. Confirm the exact values for the model you are considering.

What is the maximum concrete depth a screed can handle?

The maximum concrete depth that can be effectively leveled is typically between 150 and 300 mm. Exceeding this range may degrade performance. Check the manufacturer's specifications for the maximum depth rating.

What safety considerations should be taken when operating a concrete screed?

Noise levels can range from 80 to 95 dB(A), so hearing protection is required above 85 dB(A). Also, ensure the power supply matches the model's requirements (220–240 V AC, 50–60 Hz) and that the ingress protection rating (IP54–IP65) is suitable for the environment. Always follow the manufacturer's safety guidelines.

Data Basis

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Preliminary Technical Classification

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pressure:	N/A (manual tool, no pressure rating)
flow rate:	N/A (not applicable for manual screeding)
temperature:	5°C to 35°C (ambient and concrete temperature)
concrete set time:	Must be screeded within 30-90 minutes after pouring
slurry concentration:	Standard concrete mix with slump 75-150mm (3-6 inches)
surface area coverage:	Up to 50 m² per hour with skilled operator

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