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Where Science Meets the Earth
Gravel Lock Australia

RDC FAQ
If the pavement is bone dry, then you will need to pre-wet it with water.Use a water cart or a spray unit capable of delivering a uniform spray to the surface of the pavement. Complete a test area spraying to calibrate the flow and speed of vehicle to get the specified amount of product onto the pavement. Pre-shaping the road and using a roller on site to follow behind the water cart will give your treatment longevity and a smooth finish but is not generally required.

CSC FAQ
CSC is liquid form co-polymer soil cement specifically designed for use in and on soils, sands and other free flowing or unbound surfaces and is your unique solution from simple dust control to dust capping, heavy erosion control and hydroseeding:
ï‚·Mine Roads
ï‚·Stockpiles
ï‚·Embankment stabilization
ï‚·Construction Sites
ï‚·Mine tailing piles and stock piles
ï‚·Train carriage dust control
ï‚·Temporary car parks
ï‚·Yards
ï‚·Anywhere there is airborne dust that is not trafficked
ï‚·Hydroseeding
Gravel Locks CSC is one of the most competitive polymers on the market with 1000ltrs having the ability to treat an area of 33,000 sq mtrs. Once applied CSC quickly starts working by forming long polymer chain bonds between the soil or aggregate particles, these particles cross link creating a durable, water proof skin. After the curing process CSC becomes completely transparent, blending into the natural landscape but, can be easily coloured, for use when hydroseeding or if treated areas are required to be identified.
CSC has huge benefits for reducing the amount of water that is needed on construction sites by creating a superskin creating capping for stockpiles and embankments protecting them against wind and rain erosion. CSC can be used for broadcast dust suppression over large open areas and also provide fast germination in revegetation when used in hydro seeding.
CSC can be diluted to lower the frequency of watering for dust control saving precious resources and, where construction water availability is limited, brackish water is able to be used. The concentrate is easily diluted, easily applied, long lasting, insoluble once set, UV stable and environmentally friendly. Using a heavier dose rate, CSC is successfully used in hydroseeding as a thin polymer layer mixed with seed of your choice, promoting successful vegetation propagation.
When using CSC for dust capping and erosion control the product is designed to be used where there is no traffic using the treated area. When using CSC for short term dust control, pavements can be trafficked as per your traffic management policy. Top up applications can be applied where the surface crust has been broken.
CSC is able to be used in extremely low doses. In dust capping stockpiles CSC can be used as low as 40ml per sqm and for erosion control projects, product can be used as low as 100 ml per sqm. This makes CSC one of the most cost competitive polymers on the market. As a concentrated liquid, CSC can be diluted with any potable water source and is designed to rapidly hydrate, creating a three dimensional matrix throughout the soil or aggregate particles.
CSC has been specifically designed for use on aggregate, soils, sands and other free flowing or unbound surfaces. CSC is not intended for use on clay or soil with a high PI. CSC has been rigorously evaluated by the Environmental Control Agency and successfully used on one of the largest roading projects in New Zealand, Tel Alliance the Tauranga Eastern Link Highway – a $450,000,000.00 project for dust and erosion control.
Ideally no rain should be forecast within 24 hours of the application of the products as heavy downpours will dilute the product. As CSC cures by evaporation, cold weather will significantly increase cure time. The lower the temperature, the longer the cure time. CSC products are not to be used below 10c. Ambient temperatures will encourage rapid curing, within 24 hours of application.

PHF FAQ
PHF is the ideal product for repairing or maintaining potholes in highways, driveways and carparks. Being an asphalt product modified with polymers it remains strong and flexible yet easy to use - excellent qualities for making long term repairs to potholes. Results have shown that PHF is as good as if not better than Hotmix for fixing potholes in the road surface and has proven experience in both extremely hot and cold climates and all weather conditions.
Making a quality Coldmix Pothole Fill that provides a permanent repair it is not difficult or complicated. Just follow the formula, use quality locally sourced aggregate and Gravel Lock’s PHF Binder to make your own excellent quality PHF at an equitable price in your own country saving the need to ship bulky stone creating huge savings in carbon emissions.
It is not difficult or complicated to make quality PHF Coldmix Pothole Fill, just follow the correct formula, use quality locally sourced aggregate and Gravel Lock’s PHF Binder. Gravel Lock can supply either the concentrated raw liquid to make your own PHF Coldmix Pothole Fill or, supply PHF Pre Mix, ready for you or your contractors to install. If you purchase the raw binder, we will supply manufacturing documentation on how to mix the concentrate to produce a high quality Coldmix Pothole Fill.
Installing the products requires no specialised equipment. The range has been developed so that it can simply be installed using a spade a car wheel or a compactor for larger potholes. The range is extremely easy and versatile in the way it is installed.
PHF can be installed in three simple steps:
Clean the pothole of any debris and remove any loose pieces around the hole. If possible give yourself a vertical edge around the hole for the PHF to butt up against as it lengthens the life of the repair.
Fill the hole with PHF, making it slightly higher than the pavement, this is called crowning. Depending on the size of the repair give yourself a 5-10mm crown as this counteracts the subsidence caused by compacting.
Compact the PHF. A compactor is recommended for larger holes whilst driving back and forth with a vehicle can be used on smaller holes very effectively.
PHF can be installed in all weather conditions even when potholes are filled with water and, once applied, PHF is not susceptible to weathering. PHF does not cure chemically, it is self-compacting and cures by ambient atmosphere making temperature and weather being the deciding factors in cure time. The colder the weather the longer PHF takes to cure.