What is washed sand?
In recent years, with the rapid development of the construction industry, washed sand, as an important building material, has received widespread attention. This article will introduce in detail the definition, characteristics, uses and market conditions of water-washed sand, and attach hot topics and hot content in the past 10 days to help readers fully understand the relevant knowledge of water-washed sand.
1. Definition of washed sand
Washed sand is a kind of natural sand or manufactured sand that has been treated with water washing process. The mud, impurities and other harmful substances in the sand are removed by water washing, thereby improving the purity and quality of the sand. Washed sand is usually used in the preparation of construction materials such as concrete and mortar, and is favored for its high cleanliness and uniform particles.
| Project | washed sand | Ordinary sand |
|---|---|---|
| Processing technology | Wash with water | unwashed |
| Mud content | ≤3% | ≥5% |
| Particle uniformity | high | lower |
2. Characteristics of washed sand
1.High cleanliness: Washed sand has been washed with water and has a low mud content, which avoids the reduction in concrete strength caused by excessive mud.
2.Uniform particles: The particle size of washed sand is evenly distributed, which is beneficial to improving the workability and durability of concrete.
3.Good environmental protection: The production process of water-washed sand reduces dust pollution and meets modern environmental protection requirements.
3. Uses of washed sand
Washed sand is widely used in construction, roads, bridges and other engineering fields. The specific uses are as follows:
1.concrete preparation: Washed sand is an ideal material for formulating high-strength concrete.
2.Mortar making: Used for wall plastering, floor mortar, etc.
3.roadbed filling: Filling material used for road base.
| Purpose | Proportion |
|---|---|
| concrete preparation | 60% |
| Mortar making | 25% |
| roadbed filling | 15% |
4. Hot topics and content in the past 10 days
The following are hot topics and content related to water washing sand in the past 10 days:
| Date | hot topics | Hot content |
|---|---|---|
| 2023-10-01 | Washed sand price fluctuations | Affected by the increase in raw material prices, the price of washed sand increased slightly. |
| 2023-10-03 | The impact of environmental protection policies on the sand washing industry | Many places have introduced new environmental protection policies, and water-washed sand production companies need to upgrade their equipment. |
| 2023-10-05 | Washed Sand Alternative | Researchers are exploring the feasibility of using industrial waste as an alternative to water-washed sand. |
| 2023-10-08 | New standards for quality testing of washed sand | The state has released a new version of the quality testing standards for washed sand, which will be implemented next year. |
5. Market conditions of washed sand
According to the latest market data, the price of washed sand is affected by many factors, including raw material costs, transportation costs and policy controls. The following is the recent market price of washed sand:
| area | Price (yuan/ton) | Increase or decrease |
|---|---|---|
| East China | 120-150 | ↑2% |
| North China | 110-140 | ↑1% |
| South China | 130-160 | ↑3% |
6. Summary
As a high-quality building material, washed sand plays an important role in the construction industry. The sand and gravel processed through the water washing process are not only highly clean, but also have uniform particles, which can significantly improve the performance of concrete and mortar. With the gradual tightening of environmental protection policies and the growth of market demand, the water-washed sand industry will face new development opportunities and challenges. In the future, the industry needs to further optimize production processes and improve resource utilization to respond to market changes.
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