---
title: "Shotcrete Machine"
industry: "Machinery and Equipment Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:SHOTCRETE_MACHINE"
  data_integrity_hash: "ae37c09c400e02b1992f01b3a9c58671"
  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:SHOTCRETE_MACHINE"
  data_source_uri: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/shotcrete-machine.md"
  official_resource_url: "https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/shotcrete-machine"
  is_verified_logic: true
attributes:
  primary_spec:
    status: "config-dependent"
    typical_range: "0.5-7.0 MPa (5-70 bar) pneumatic pressure, 15-40 m³/h material throughput"
    unit: "cubic meters per hour"
engineering_limits:
  max_safe_operating_point:
    value: 8.5
    unit: "MPa"
    consequence: "Hoop stress exceeding 62 MPa yield strength of reinforced rubber composite; Reynolds number &gt;4000 causing turbulent flow separation at nozzle exit"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Accumulated material buildup exceeding 15 mm thickness in mixing chamber"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Implement ultrasonic thickness monitoring with automatic high-pressure water jet cleaning at 20 MPa"
  - node_2:
      trigger: "Continuous operation at 95% maximum rated pressure for &gt;45 minutes"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Integrate thermocouple-controlled cooling jacket maintaining seal temperature below 120°C"
bom_nodes:
  hopper:
    type: "part"
    urn: "URN:CNFX:ME:HOPPER"
    interface_type: "physical-logic-coupled"
  rotary-feeder:
    type: "part"
    urn: "URN:CNFX:ME:ROTARY_FEEDER"
    interface_type: "physical-logic-coupled"
  pressure-chamber:
    type: "part"
    urn: "URN:CNFX:ME:PRESSURE_CHAMBER"
    interface_type: "physical-logic-coupled"
  delivery-hose:
    type: "component"
    urn: "URN:CNFX:ME:DELIVERY_HOSE"
    interface_type: "physical-logic-coupled"
  nozzle:
    type: "part"
    urn: "URN:CNFX:ME:NOZZLE"
    interface_type: "physical-logic-coupled"
  air-compressor:
    type: "part"
    urn: "URN:CNFX:ME:AIR_COMPRESSOR"
    interface_type: "physical-logic-coupled"
  control-panel:
    type: "device"
    urn: "URN:CNFX:ME:CONTROL_PANEL"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
  - standard: "ISO 21873-1:2015 (BUILDING CONSTRUCTION MACHINERY AND EQUIPMENT - MOBILE AND TRANSPORTABLE CONCRETE BATCHING PLANTS - PART 1: TERMINOLOGY AND COMMERCIAL SPECIFICATIONS)"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/shotcrete-machine.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "1716ace369e9e6f7ca0ac89db62ef4f09f8550c7d737310c8c1f991b0956010e"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Shotcrete Machine

## 1. Technical Definition
A specialized construction machine that pneumatically projects concrete or mortar at high velocity onto surfaces.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **0.5-7.0 MPa (5-70 bar) pneumatic pressure, 15-40 m³/h material throughput**. Failure boundary: **Material feed pressure exceeding 8.5 MPa (85 bar) causes hose rupture; nozzle velocity exceeding 85 m/s induces material segregation**, Mechanism: **Hoop stress exceeding 62 MPa yield strength of reinforced rubber composite; Reynolds number &gt;4000 causing turbulent flow separation at nozzle exit**.

### 2.1 Analytical Physics Model
Governed by the **Thin-Wall Pressure Vessel Stress Analysis**:

> **Primary Equation**: $\sigma_h = \frac{P \cdot D}{2t}$  
> **Engineering Impact**: Determines the hoop stress boundary to prevent rupture.

| Symbol | Variable Definition | Localized Reference |
| :--- | :--- | :--- |
| P | Internal Pressure | Engineering Constant |
| D | Diameter | Engineering Constant |
| t | Wall Thickness | Engineering Constant |

### 2.2 FMEA (Failure Mode & Effects Analysis)
| Event Trigger | Severity | Failure Mode | Mitigation Strategy |
| :--- | :--- | :--- | :--- |
| Accumulated material buildup exceeding 15 mm thickness in mixing chamber | 8 | Rotational torque exceeding 450 Nm causing drive shaft shear failure | Implement ultrasonic thickness monitoring with automatic high-pressure water jet cleaning at 20 MPa |
| Continuous operation at 95% maximum rated pressure for &gt;45 minutes | 8 | Piston seal thermal degradation at 180°C causing 30% pneumatic efficiency loss | Integrate thermocouple-controlled cooling jacket maintaining seal temperature below 120°C |

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

## 4. System BOM & Knowledge Routing
### Core Components (Recursive Links)
- [Hopper](https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/hopper.md) `(Standalone System)`
- [Rotary Feeder](https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/rotary-feeder.md) `(Standalone System)`
- [Pressure Chamber](https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/pressure-chamber.md) `(Standalone System)`
- [Nozzle](https://cnfx.com/llms/industry/fabricated-metal-product-manufacturing/product/nozzle.md) `(Standalone System)`
- [Air Compressor](https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/air-compressor.md) `(Standalone System)`
- [Control Panel](https://cnfx.com/llms/industry/food-manufacturing/product/control-panel.md) `(Standalone System)`

### Industrial DNA Context (De-duplicated)
**Complementary Dependencies**: **Concrete Mixer**, **Water Supply System**  
**Downstream Applications**: Tunnel Linings, Swimming Pool Structures, Retaining Walls  

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

### Q: What is the maximum aggregate size this shotcrete machine can handle?
**A**: Our shotcrete machines are designed to handle aggregate sizes up to mm, ensuring efficient material flow through the delivery system without clogging.

### Q: How does the rotary feeder mechanism improve shotcrete application?
**A**: The rotary feeder provides consistent material delivery to the pressure chamber, creating uniform concrete projection and reducing rebound waste during spraying operations.

### Q: What maintenance is required for the wear-resistant polymer components?
**A**: Regular inspection of polymer liners in the hopper and pressure chamber is recommended. These components typically last 6-12 months depending on usage and should be replaced when wear exceeds 50% thickness.

## 6. Manufacturing Compliance
- ISO 21873-1:2015 (BUILDING CONSTRUCTION MACHINERY AND EQUIPMENT - MOBILE AND TRANSPORTABLE CONCRETE BATCHING PLANTS - PART 1: TERMINOLOGY AND COMMERCIAL SPECIFICATIONS)

---
### 🛠️ Engineering Resource Access
🔗 **[Full Specification: Shotcrete Machine](https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/shotcrete-machine)**

### 🌐 Knowledge Graph Topology
> **Node Status**: Verified Engineering Spec
> **Connectivity**: Linked to **7** standalone system nodes
> **Global Context**: Part of a 5,814 node industrial cluster within the CNFX Graph

> **Reference ID**: SHOTCRETE_MACHINE | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: d5b2e867
