What is Pumped Concrete
Pumping concrete is a modern construction technology that transports concrete to construction sites through concrete pumps. It is widely used in high-rise buildings, bridges, tunnels and other projects. Its core advantages are high efficiency, labor saving, and adaptability to complex construction environments. The following is a detailed analysis of pumped concrete:
1. Definition and characteristics of pumped concrete
Pumped concrete refers to fluid concrete transported through pipeline pressure. Its mix ratio must meet pumpability requirements. Admixtures (such as water-reducing admixtures) are usually added to improve fluidity and segregation resistance. Key features include:
| Features | Description |
|---|---|
| High liquidity | The slump is usually 80-180mm, which is convenient for pipeline transportation |
| Strong stability | Resist segregation and bleeding to ensure pouring quality |
| Efficient construction | Can transport 30-90m³ concrete per hour |
2. Composition and technical requirements of pumped concrete
The raw materials of pumped concrete are similar to ordinary concrete, but there are higher requirements for the mix ratio:
| Material | Technical requirements |
|---|---|
| cement | Dosage ≥300kg/m³ to ensure adhesion |
| aggregate | Particle size ≤1/3 pipe diameter, mud content <3% |
| Admixture | Commonly used pumping agents and water reducing agents |
3. Classification of pumping equipment
According to project requirements, concrete pumps can be divided into the following two categories:
| Type | Features | Applicable scenarios |
|---|---|---|
| tow pump | Fixed installation, supporting pipes required | Large and medium-sized projects |
| Vehicle mounted pump | Highly maneuverable, with built-in distribution boom | Small and medium-sized projects |
4. Association of hot topics across the entire network (hot topics in the past 10 days)
Combined with recent hot topics in the engineering field, pumping concrete technology is highly related to the following topics:
| hot topics | Related points |
|---|---|
| The rise of modular construction | Pumping technology for precast casting |
| Carbon Neutral Construction | Environmental advantages of reducing transportation energy consumption |
| Smart construction site | Application of Internet of Things Monitoring System for Pump Trucks |
5. Construction precautions
Special attention needs to be paid when pumping concrete:
1.Pipe layout: Avoid 90° sharp bends. When the pumping height exceeds 100m, segmented pressurization is required.
2.Run pipe treatment: The pipeline needs to be lubricated with mortar before pumping
3.continuous operation: The pipeline needs to be cleaned if the pump is stopped for more than 30 minutes.
4.safety regulations: The pump truck legs need to be fully extended and kept away from high-voltage lines
6. Industry development trends
As technology advances, pumped concrete is developing in the following directions:
•Ultra high pressure pumping: Breakthrough in conveying technology for high-strength concrete above C100
•Intelligent: BIM-based automatic planning of pumping paths
•Greening: Research and development of recycled aggregate pumped concrete
In summary, as the core technology of modern construction, the development of pumped concrete has always kept pace with the trend of industrialization and intelligence in construction. Mastering its technical key points is of great significance to improving project efficiency and ensuring quality.
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