What kind of stones are used in mixing stations? ——Analysis of hot topics on the Internet in the past 10 days
Recently, with the recovery of the construction industry, the selection of raw materials for mixing stations has become a hot topic. This article combines the data from the entire network in the past 10 days to analyze the impact of stone types on concrete quality and organizes the latest trends in the industry.
1. Popular discussion focus
1. Stricter environmental protection policies promote the upgrading of stone standards
2. Cost-effectiveness comparison between machine-made sand and natural stone
3. Effect of stone grade on concrete strength
| Stone type | market share | Average price (yuan/ton) | Hot search index |
|---|---|---|---|
| Granite gravel | 42% | 85-110 | ★★★★☆ |
| limestone gravel | 35% | 70-95 | ★★★☆☆ |
| river pebbles | 15% | 120-150 | ★★☆☆☆ |
| recycled aggregate | 8% | 50-75 | ★★★★★ |
2. Performance comparison of mainstream stones
| index | granite | limestone | river pebbles |
|---|---|---|---|
| crush value | ≤12% | ≤16% | ≤10% |
| Mud content | ≤0.5% | ≤1% | ≤0.3% |
| Robustness | excellent | good | excellent |
| Alkaline activity | Requires testing | none | Requires testing |
3. Latest Industry Trends
1.Breakthrough in the application of recycled aggregates: A mixing station in Shandong achieved a 30% replacement rate of recycled aggregates, achieved standard strength and reduced costs by 18%.
2.Popularization of intelligent detection technology: The search volume for "AI stone grading analysis" has increased by 210% in the past seven days, and Huawei Cloud has launched a dedicated testing solution for mixing stations.
3.Rising transportation costs: The increase in diesel prices has led to an increase in stone transportation costs of 5-8 yuan/ton, and regional procurement has become a trend.
4. Expert advice
1. It is recommended to use limestone gravel for concrete below C30
2. Prioritize the use of 5-25mm continuously graded granite for key projects
3. Pay attention to the fluctuation of the moisture content of the stone. It is recommended to install an automatic moisture content detector.
4. Coastal areas need to strictly control chloride ion content ≤0.02%
5. Forecast of future trends
| Time node | technology trends | policy impact |
|---|---|---|
| 2024Q3 | Popularization of grading optimization algorithms | Carbon tax pilot expanded |
| 2025 | Recycled aggregate accounts for 15% | Implementation of new national standard GB/T14685 |
| 2026 | Application of Nano-modified Stone | Zero waste mixing station certification |
Conclusion: The current stone selection for mixing stations needs to be comprehensively considered.Strength requirements, cost control, environmental protection indicatorsThree major elements. It is recommended that enterprises establish a dynamic database to track local stone quality monitoring reports in real time, and pay attention to the latest updates to the "Green Building Materials Certification Catalog" released by the Ministry of Housing and Urban-Rural Development.
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