What kind of sand is used in mixing station? ——Analysis and data interpretation of hot topics across the entire network
Recently, the selection of sand for mixing plants has become a hot topic in the construction industry. With the tightening of environmental protection policies and the reduction of natural sand resources, alternative materials such as manufactured sand and recycled sand have attracted much attention. This article will combine the hot content of the entire network in the past 10 days to provide you with a detailed analysis of the types, characteristics and market trends of sand used in mixing stations.
1. Overview of hot topic data on the entire network
| Topic keywords | Search volume (daily average) | Discussion platform TOP3 | Hot trends |
|---|---|---|---|
| Sand standards for mixing stations | 5,200+ | Zhihu/Tieba/Bilibili | up 35% |
| Machine-made sand vs natural sand | 8,700+ | Douyin/WeChat public account/Toutiao | peak popularity |
| Sand and gravel price fluctuations | 12,000+ | Industry forum/Weibo/Kuaishou | persistent high fever |
| Environmentally friendly sand making equipment | 3,500+ | Baidu Knows/Little Red Book/Professional Website | Steady rise |
2. Comparative analysis of mainstream sand types
| sand type | Particle size range (mm) | Mud content | Price (yuan/ton) | Applicable scenarios |
|---|---|---|---|---|
| natural river sand | 0.15-4.75 | ≤3% | 80-120 | high strength concrete |
| Machine-made sand | 0.075-4.75 | ≤5% | 50-80 | Ordinary concrete |
| Recycled aggregate sand | 0.15-5.0 | ≤8% | 30-50 | Roadbed/low grade concrete |
| Desalination of sea sand | 0.08-5.0 | ≤1% | 60-90 | Can only be used after special treatment |
3. Suggestions from industry experts
According to the latest guidance from the China Building Materials Federation:
1.Prefer the use of machine-made sand: The particle shape and gradation of the machine-made sand produced by the new sand making equipment are close to that of natural sand, and the MB value (powder content) is controllable.
2.Strictly detect chloride ion content: Especially when using sea sand or recycled sand, it is necessary to ensure that the chloride ion content is ≤0.02%.
3.Pay attention to the moisture content of the sand: The mixing station should be equipped with an online moisture content detector to control the sand moisture content between 3% and 5%.
4. Market trend forecast
| Time node | Predict trends | Influencing factors |
|---|---|---|
| 2023Q4 | The proportion of manufactured sand exceeds 65% | River sand mining restriction policy |
| 2024 | Popularization of intelligent screening systems | 5G+IoT technology application |
| 2025 | Recycled sand utilization rate reaches 30% | Construction waste recycling policy |
5. Practical suggestions
1.Establish sand source database: Record key indicators such as crushing value and fineness modulus of sand samples from each supplier (it is recommended that the modulus be controlled at 2.6-3.0).
2.Dynamically adjust the mix ratio: Different sand sources should be re-tested, especially concrete above C30.
3.Pay attention to local standards: For example, Guangdong Province has issued the "Technical Specifications for the Application of Machine-made Sand Concrete" (DBJ/T15-142-2018).
Current industry data shows that manufactured sand accounts for 58.7% of the sand structure used in mixing stations across the country, and this proportion is expected to continue to rise. Choosing a suitable sand solution requires comprehensive consideration of multiple factors such as cost, quality, and supply stability.
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