With the acceleration of urbanization and the continuous advancement of industrialization, dust pollution has become one of the important environmental issues that affect air quality and endanger public health. In order to effectively control dust, dust suppression binders are being widely used in various construction sites, open-air storage yards, road maintenance and other places as an efficient and environmentally friendly solution. However, facing the dust problems in different regions and with different pollution levels, how to accurately select appropriate dust suppression binders has become the key to achieving efficient dust suppression. This article will focus on the severity of dust pollution and site characteristics, and discuss how to scientifically and reasonably select dust suppression binders.
1. Dust pollution degree and adhesive selection
The degree of dust pollution varies depending on factors such as region, season, climate and human activities. Mild dust may only appear as floating dust on the surface, while severe dust may form large-scale, continuous dust clouds, seriously affecting air quality. dust suppression binders with different performances should be selected for different degrees of dust pollution.
Mild dust: For surface dust or slight dust, dust suppression binders with moderate viscosity and long curing time can be selected. This type of adhesive can firmly adhere to the surface of soil particles to form a protective film, effectively preventing the spread of dust caused by wind erosion. At the same time, the long curing time allows the adhesive to have enough time to penetrate the soil, enhance the bonding force between soil particles, and improve the stability of the soil.
Severe dust: For areas with severe dust, dust suppression binders with higher viscosity and faster curing speed should be selected. This type of adhesive can quickly form a hard protective shell, effectively lock soil particles and prevent them from being swept away by the wind. In addition, high-viscosity adhesives can better resist rain erosion and ensure the durability of dust suppression effects.
2. Site characteristics and adhesive adaptation
In addition to the degree of dust pollution, factors such as the site's geographical location, climatic conditions, and soil type will also affect the selection of dust suppression binders.
Areas with strong winds: In areas with strong winds, dust problems are particularly prominent. Therefore, dust suppression binders with stronger viscosity and faster curing speed should be selected. This type of adhesive can quickly form a solid protective layer to effectively resist wind erosion. At the same time, in order to enhance the adhesion and weather resistance of the adhesive, an appropriate amount of reinforcing agent or anti-aging agent can be added.
Wet or rainy areas: In wet or rainy areas, the selection of adhesives needs to consider their water resistance and scouring resistance. Adhesives that can quickly solidify and form a hard protective shell should be selected to prevent the loss of adhesives caused by rain scouring. In addition, in order to enhance the water resistance of the adhesive, additives with waterproof functions can be used for modification.
Differences in soil types: Different types of soil have different adsorption capacity and curing effects on adhesives. Therefore, when selecting an adhesive, factors such as soil type, particle size, and water content need to be considered. For example, for clay soils, an adhesive with moderate viscosity and strong permeability can be selected; while for sandy soils, an adhesive with higher viscosity and the ability to form a tight protective layer needs to be selected.
III. Practical application and effect evaluation
After selecting a suitable dust suppression binder, it is also necessary to combine the actual site conditions for practical application. During the application process, the dilution ratio, spraying volume, spraying frequency and other parameters of the adhesive must be strictly controlled to ensure that the adhesive can fully exert its dust suppression effect. At the same time, the dust suppression effect must be evaluated regularly and the use plan of the adhesive must be adjusted according to the evaluation results to achieve the best dust suppression effect.