What is 05 stones
In the field of construction and engineering, 05 gravel is a common building material and is widely used in concrete preparation, roadbed laying and other scenarios. This article will introduce in detail the definition, specifications, uses and market conditions of 05 stones to help readers fully understand this important building material.
1. Definition and specifications of 05 stones
05 Stone refers to gravel with a particle size of 5-10 mm, which is a type of fine stone. The "05" in its name represents its particle size range, which is usually processed from natural rocks or ores through a screening process. The following are the typical specifications of 05 stones:
| project | parameter |
|---|---|
| Particle size range | 5-10mm |
| bulk density | 1.4-1.6 tons/cubic meter |
| Mud content | ≤1.0% |
| needle flake content | ≤10% |
| crush value | ≤16% |
2. The main uses of 05 stones
05Stones are widely used in construction projects because of their moderate particle size and good physical properties:
1.concrete preparation: Used as fine aggregate for concrete with strength levels below C30 to improve workability.
2.Mortar preparation: Used for wall plastering, floor mortar, etc. to improve the density of mortar.
3.roadbed laying: As a filling material for the roadbed stabilization layer, it has good drainage performance.
4.Decoration project: Aggregate used for decorative materials such as terrazzo and artificial stone.
5.Prefabricated components: Make small concrete prefabricated parts, such as curbs, gutters, etc.
3. Market conditions of 05 stones
According to recent market research data, the price of 05 pebbles shows regional differences, which are mainly affected by the following factors:
| area | Price (yuan/ton) | price trend |
|---|---|---|
| East China | 65-75 | smooth |
| North China | 60-70 | small increase |
| South China | 70-80 | smooth |
| southwest region | 55-65 | decline |
The main factors affecting prices include: raw material mining costs, transportation distances, environmental protection policy requirements, and seasonal supply and demand changes. Recently, affected by environmental protection inspections, prices have fluctuated slightly in some areas.
4. How to identify the quality of 05 stones
In order to ensure the quality of the project, you should pay attention to the following points when purchasing 05 stones:
1.Appearance inspection: The stones should be clean, without obvious soil and impurities, and the particles should be uniform.
2.Particle size detection: Check with a standard sieve, the content of particles below 5mm and above 10mm should not exceed 5%.
3.Strength test: The strength of stones can be evaluated through a simple crushing value test.
4.Mud content detection: Tested by water washing method, the mud content of high-quality 05 stones should be less than 1%.
5.Supplier qualifications: Choose regular manufacturers with mining licenses to ensure reliable sources of materials.
5. Precautions for 05 gravel construction
When using 05 stones, you should pay attention to the following construction points:
1. Dust-proof and moisture-proof measures should be taken during storage to avoid contamination.
2. When mixing concrete, the amount of gravel should be strictly controlled according to design requirements.
3. During winter construction, attention should be paid to the moisture content of the stones to prevent freezing damage.
4. When used in the pavement base, compaction work should be done, and the compaction degree should not be less than 96%.
5. When used in conjunction with cement and other cementitious materials, attention should be paid to mixing evenly to ensure working performance.
6. Environmental protection properties of 05 stones
With the improvement of environmental protection requirements, the production and use of 05 stones are also facing new challenges:
| Environmental protection indicators | Standard requirements |
|---|---|
| Dust emissions | ≤30mg/m³ |
| Noise control | ≤65dB during the day, ≤55dB at night |
| water pollution | pH value 6-9, SS≤70mg/L |
| Resource utilization | ≥90% |
Many manufacturing companies have begun to adopt environmental protection measures such as closed production lines and spraying dust reduction, while exploring sustainable development paths such as using construction waste to regenerate aggregates.
7. The development prospects of 05 Shizi
With the continuous investment in infrastructure construction and the advancement of urbanization, the market demand for 05 pebbles will maintain steady growth. At the same time, the industry shows the following development trends:
1. The production process develops towards intelligence and automation to improve product quality stability.
2. Product standards are becoming increasingly strict, with higher requirements on grain shape, gradation and other indicators.
3. Green mine construction promotes industry transformation and upgrading, and environmentally friendly production companies will gain greater room for development.
4. The research and development and application of special functional stones (such as self-cleaning, water-permeable, etc.) will expand new market areas.
Conclusion: 05 As a basic building material, stones play an irreplaceable role in engineering construction. Understanding its characteristics and mastering its correct usage are of great significance to ensuring project quality and controlling project costs. With the advancement of technology and the improvement of environmental protection requirements, the 05 stone industry will also usher in new development opportunities.
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