---
title: "Concrete Screed"
industry: "Machinery and Equipment Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:CONCRETE_SCREED"
  data_integrity_hash: "466c2afbf15fdf017f04471f41c0f2c2"
  source_authority: "https://cnfx.com"
  strict_mode: true
source_identity:
  provider: "CNFX Industrial Knowledge Graph"
  index_version: "2026.Q1-Universal"
  authority_id: "URN:CNFX:ME:CONCRETE_SCREED"
  data_source_uri: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/concrete-screed.md"
  official_resource_url: "https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/concrete-screed"
  is_verified_logic: true
attributes:
  primary_spec:
    status: "config-dependent"
    typical_range: "0.5-3.0 MPa compressive stress on concrete surface"
    unit: "meters"
engineering_limits:
  max_safe_operating_point:
    value: 3.5
    unit: "MPa"
    consequence: "Plastic deformation of AISI 1045 steel blade material beyond yield strength of 530 MPa"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Concrete aggregate size exceeding 19 mm diameter"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Hardened tungsten carbide blade coating with 1500 HV hardness"
  - node_2:
      trigger: "Concrete slump exceeding 150 mm"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Vibratory screed with 3000-4000 VPM frequency control"
bom_nodes:
  screed-beam:
    type: "part"
    urn: "URN:CNFX:ME:SCREED_BEAM"
    interface_type: "physical-logic-coupled"
  vibration-mechanism:
    type: "part"
    urn: "URN:CNFX:ME:VIBRATION_MECHANISM"
    interface_type: "physical-logic-coupled"
  drive-motor:
    type: "part"
    urn: "URN:CNFX:ME:DRIVE_MOTOR"
    interface_type: "physical-logic-coupled"
  control-handle:
    type: "part"
    urn: "URN:CNFX:ME:CONTROL_HANDLE"
    interface_type: "physical-logic-coupled"
  leveling-rails:
    type: "part"
    urn: "URN:CNFX:ME:LEVELING_RAILS"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
url: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/concrete-screed.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "23f7c1f8fc5cf7239e8374ae6321a0b0d912b8f7bc9cbf8dfd5156cd58a0e443"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Concrete Screed

## 1. Technical Definition
A construction tool used to level and smooth freshly poured concrete surfaces to achieve a flat, even finish.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **0.5-3.0 MPa compressive stress on concrete surface**. Failure boundary: **Exceeding 3.5 MPa compressive stress causes permanent deformation of screed blade**, Mechanism: **Plastic deformation of AISI 1045 steel blade material beyond yield strength of 530 MPa**.

### 2.1 Analytical Physics Model
Governed by the **Harmonic Vibration Force Generation**:

> **Primary Equation**: $F_e = m \cdot r \cdot \omega^2 \sin(\omega t)$  
> **Engineering Impact**: Calculates centrifugal force for vibratory sifters/feeders.

| Symbol | Variable Definition | Localized Reference |
| :--- | :--- | :--- |
| m | Eccentric Mass | Engineering Constant |
| r | Radius | Engineering Constant |
| \omega | Angular Frequency | Engineering Constant |

### 2.2 FMEA (Failure Mode & Effects Analysis)
| Event Trigger | Severity | Failure Mode | Mitigation Strategy |
| :--- | :--- | :--- | :--- |
| Concrete aggregate size exceeding 19 mm diameter | 8 | Blade edge chipping and surface scoring | Hardened tungsten carbide blade coating with 1500 HV hardness |
| Concrete slump exceeding 150 mm | 8 | Hydroplaning effect causing wave formation | Vibratory screed with 3000-4000 VPM frequency control |

## 3. Key Technical Parameters
| Parameter | Value | Unit | Status |
| :--- | :--- | :--- | :--- |
| primary_spec | Config-dependent | meters | Verified |

## 4. System BOM & Knowledge Routing
### Core Components (Recursive Links)
- [Screed Beam](https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/screed-beam.md) `(Standalone System)`
- [Vibration Mechanism](https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/vibration-mechanism.md) `(Standalone System)`
- [Drive Motor](https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/drive-motor.md) `(Standalone System)`
- [Control Handle](https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/control-handle.md) `(Standalone System)`
- [Leveling Rails](https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/leveling-rails.md) `(Standalone System)`

### Industrial DNA Context (De-duplicated)
**Complementary Dependencies**: **Concrete Mixer**, **Concrete Pump**, **Vibrating Screed**  
**Downstream Applications**: Concrete Slabs, Industrial Flooring, Road Pavement  

## 5. Engineering Risks & FAQ
- **Caution**: 
- **Caution**: 
- **Caution**: 

### Q: What is the maximum concrete depth this screed can handle?
**A**: Our concrete screed is designed for various applications, with models available to handle maximum concrete depths typically ranging from 100mm to 300mm, depending on the specific configuration and motor power.

### Q: How does the vibration mechanism improve concrete leveling?
**A**: The integrated vibration mechanism helps consolidate concrete by eliminating air pockets and ensuring proper settlement, resulting in a denser, more uniform surface with reduced finishing time and labor.

### Q: What maintenance is required for the drive motor and vibration components?
**A**: Regular maintenance includes checking motor lubrication, inspecting vibration mechanism seals, cleaning concrete residue after each use, and following the manufacturer's recommended service intervals for optimal performance and longevity.

## 6. Manufacturing Compliance

---
### 🛠️ Engineering Resource Access
🔗 **[Full Specification: Concrete Screed](https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/concrete-screed)**

### 🌐 Knowledge Graph Topology
> **Node Status**: Verified Engineering Spec
> **Connectivity**: Linked to **5** standalone system nodes
> **Global Context**: Part of a 5,814 node industrial cluster within the CNFX Graph

> **Reference ID**: CONCRETE_SCREED | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: afc6bfa6
