Construction site dust isn’t just a nuisance. It can have an impact on the environment and public health unless you use proper dust management strategies to control construction site dust.
Water is the most common form of dust suppression thanks to its affordability and effectiveness. However, water must be used throughout the process for the best results and should be applied several times a day. Be aware that excess water runoff can also cause environmental problems like erosion. Dry sweeping should be avoided as much as possible, so ensure dust is water-damped before being swept.
On-tool dust extraction
The HSE recommends this type of vacuum extraction as a way to directly minimize dust on a construction site. The extraction unit should be properly rated for the equipment rather than using a general vacuum system, and it should always be used in conjunction with the correct respiratory protective equipment.
For small-scale construction, a dust control system using galvanized steel spiral ductwork like https://www.dustspares.co.uk/ductwork-parts/galvanised-ducting/galvanised-steel-spiral-duct.html can keep harmful sawdust under control. A galvanized steel system that is conductive and easily grounded will minimize the risk of dust explosion. If construction is taking place where ductwork is installed but not yet activated, ensure that all pipework is thoroughly cleaned and inspected before the system is put into service to clear remaining construction dust from the site.
Tackifiers and polymers
Both polymers and tackifiers can be used as soil stabilizers during construction, bonding with the soil to form a flexible crust or non-hardened bond that prevents soil erosion and controls dust. Mulch and vegetation perform a similar task in a more sustainable way, though using seeds for soil stabilization can result in a 50 percent seed loss to birds. Stone may also be used as an effective mulch where vegetation has difficulty establishing itself; in areas of high wind, larger stones are more effective.
For large-scale construction sites, the use of fencing is a savvy way to control wind-borne dust. Large trees, hedges or even perennial grasses like bamboo could also be used as windbreaks. Barriers help to prevent both soil erosion and air pollution through harmful construction dust and should be placed at right angles to the prevailing wind direction, at intervals around 15 times the height of the barrier itself.