GRAVEL LOCK - NEW ZEALAND'S PREFERRED SUPPLIER OF DUST SUPPRESSION, ROAD REPAIR & EROSION CONTROL PRODUCTS

RDC is a naturally occurring bischofite brine engineered for long-lasting dust suppression on unsealed roads.  RDC is hygroscopic action draws moisture from the ambient atmosphere, binding fine particles within the pavement and keeping the surface damp, compact, and smooth for extended periods under normal summer conditions.

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Gravel Lock’s team can supply, deliver, and apply RDC on site, handling logistics and spraying to ensure consistent, high-quality results.

 

Industries and Applications

• Rural gravel roads and access tracks

• Forestry, mining, and construction haul roads

• Commercial yards and container depots

• Highway construction zones and lay-down areas

• Any unsealed site where airborne dust is a nuisance or safety concern

 

Fast Facts

• Draws moisture from the ambient atmosphere to lock fines in place and strengthen the surface

• Typically requires no watering for the entire summer season, reducing water use and operating costs

• Keeps dust levels within PM10 air-quality standards, improving health and visibility

• Reduces grading frequency and aggregate loss, lowering maintenance budgets and extending road life

• Non-corrosive formulation that is equipment and vegetation friendly

• Performs reliably where sufficient ambient moisture is present

• Rapid application delivers visible, dust-free results from the first pass

 

Application Details

• Standard rate: 2 ltrs per sqm for the initial treatment

• Top-up rate: 1 ltr per sqm if and should rising dust appears later in the season (not typically required)

• Applied using standard water carts or tractor spray units following Gravel Lock methodology

• In most cases a single treatment per summer provides a full summer season of dust control

 

Features and Benefits

• Maintains surface integrity and a smooth, safe running surface

• Environmentally safe and non-corrosive

• Provides significant water savings by reducing or eliminating watering cycles

• Delivers immediate dust suppression with clear, measurable results

• Extends road life by keeping fines securely bound within the pavement

 

RDC combines natural science with practical engineering to give councils, contractors, and operators a dependable way to control dust, protect communities, and cut costs—season after season.