FAQ

Frequently asked questions about our products. 

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RDC FAQ

RDC Road Dust control

What type of Industries use RDC?


RDC is used where there is airborne dust causing issues within the workplace or for road users. •Council Roads-dusty gravel roads •Highway Construction Haul Roads •Forestry Roads •Mine Roads •Commercial Yard •Agricultural applications •Private ratepayers




What is the Recommended Dose Rate


Initial recommended application rate of 2ltrs per sqm for the initial treatment with a top up of 1ltr per sqm if required (rising dust or extreme weather).




How do I apply RDC and what equipment do I require?


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.




Can RDC be used as a water saver?


Yes, RDC can be dilutedat 10:1(10%) to lower the frequency of watering for dust control, saving precious resources.




What type of soil can I use RDC on?


RDC can be used on most soil types that have a wellgraded grain size distribution with fines. RDC isnot compatible with plastic materials.




What affects the performance of RDC?


Prior to application no heavy rain should be forecast within 24 hours to give the product time to cure into the pavement.




Is RDC corrosive?


Gravel Lock’s proprietary additives have been proven to reduce corrosiveness to less than that of water.




How should I clean my equipment?


RDC is not difficult to remove, simply rinse spray units and bulk tankers with water.




How is RDC Supplied?


RDC is supplied in 1000ltr IBC’s or 20000ltrs bulk tanker delivery. Minimum order is a 1000ltrs in an IBC.




Where can I buy RDC from?


Gravel Lock has distribution points in Tauranga, Christchurch and Nelson we also import RDC from Adelaide for large scale jobsto a port of your choice. All purchases are ex works or CIF.




Payment Terms


Gravel Lock’s payment terms are prepaid or, if approved, on account.




Can I store RDC?


Yes you can store RDC outside for up to 12 months in a cool dry place. The easiest way to store your RDC is in totes or in a tank that can hold heavy liquids (1.3 SG).




What is the Specific Gravity of RDC?


RDC has a SG of 1.3 which needs to be accounted for when shipping or storing the product.




Does RDC have environmental approval?


Yes RDC is approved pursuant to the HSNO Act 1996, Approval number: HSR002764. Most NZ Councils do not need approval for RDC as it is an approved activity, however where consent is required, Gravel Lock has gained the correct approvals.




Should I undertake a trial before making a large order?


Gravel Lock has many case studies that you can view on the web site for successful works with Road Dust Control, however you can certainly undertake a small trial. Minimum purchase is 1000ltrs in an IBCs.





 
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HSC FAQ

Frequently asked questions

What type of Industries use HSC?


Being a stabilizing and dust suppression system combined into one that has the capability to self-heal, HSC can be used in many industries that require these unique qualities: Gravel Road Stabilization Haul Road Mining and Forestry Roads Construction Sites Car parks Cycle Ways Vineyards–Access Roads Standoff Pads Temporary Roads




What are the main benefits when using HSC?


HSC is an environmentally friendly, biodegradable, hygroscopic cement which is hard wearing, self-healing and can solidify any soil or aggregate. HSC is a non-hydraulic setting cement, it sets as it dries and reacts with carbon dioxide in the air.




How will using HSC save me money?


Using HSC you can significantly lower construction costs by the reduction of aggregate demands,decreased construction times, decreases in ongoing maintenance and, a significant reduction in the loss of expensive replacement aggregates. Where there is limited local material, HSC can be mixed with the insitu material to modify and improve marginal or substandard material–savings of up to 40% have been made using HSC.




How long do I have to keep my road/yard closed after using HSC?


Pavements can be trafficked while construction is taking place with traffic providing on going compaction.




Can I seal over a HSC treated pavement?


Yes definitely, With HSC the pavement can remain unsealed for lengthy periods (up to 2 years) which allows for contractors to undertake multiple works and seal when convenient.




Recommended Dose Rate


Minimum dose rate of 4kgs per sqm when using HSC for temporary stabilizing application such as forestry roads or construction sites. Application rates can increase to as much as 20kgs per sqm for car parks and heavy haul roads that are required to remain permanent.




What is the life span of HSC?


Normal life span is 1-2 years and with regular maintenance. If chip sealed, the pavement will last inexcess of 10 years.




How do I maintain my HSC treated pavement?


Treated pavements can be repaired using more of the same product for pothole filling, edge breaks and aggregate overlays. Once applied and cured, HSC is not water soluble. The pavement can be chip sealed up to 2 years following treatment.




How do I apply HSC and what equipment do I require?


HSC is either applicated by a Grader up to 75mm deep or a Mill for deeper applications.(*portable pump), Spreader Truck (alternative is manual application), Grader with rippers CAT 120gor larger, Water Cart 8000ltrs or more, Steel Drum Roller 8ton, Pneumatic Roller and Drag Broom.




What type of soil can I use HSC on?


HSC can be used on most soil types that have a well graded grain size distribution with fines. HSC is compatible with high plastic materials.




What affects the performance of HSC?


Performance Factors include application rate, soil type, dilution, compaction, traffic, penetration and climate




How should I clean my equipment?


For uncured cleaning, rinse equipment immediately with water. Once cured, HSC will form into a hard ceramic material in its pure form and is extremely difficult to remove from machinery. Removal is successful with high pressure water blasting. Ensure washing down equipment immediately and have appropriate traffic control to avoid splashing.




How is HSC Supplied?


HSC is sold as a powdered product and is supplied in 1000kg bulk bags.




Where can I buy HSC from?


HSC is manufactured and sold ex works Auckland or Melbourne.




Payment Term


Gravel Lock’s payment terms are prepaid or, if approved, on account




Can I store HSC?


HSC Powder needs to be stored inside out of the weather for up to 6 months.




Does HSC have environmental approval?


Yes, HSC is approved. HSNO Approval Number HSR002544. Construction Products (Subsidiary Hazard) Group Standard 2006Most NZ Councils do not need approval for HSC as it is an approved activity, however where consent is required, Gravel Lock has gained the correct approvals.




Should I undertake a trial before making a large order?


Gravel Lock has many case studies that you can view on the web site for successful works with HSC, however you can certainly undertake a small trial to view performance of the product on your site.





 
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FLEX-C-MENT FAQ

Frequently asked questions

What are the main benefits when using CSC?


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.




How does CSC save me time and money?


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.




How do I use CSC in my project?


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.




How long do I have to keep my road/yard closed after using CSC?


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.




Recommended Dose Rate?


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.




How do I apply CSC and what equipment do I require?


CSC can be applied by water truck, pump and hose or hydroseeding equipment at the recommended dose rates.




What type of soil can I treat with CSC?


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.




What affects the performance of CSC?


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.




How should I clean my equipment?


For uncured cleaning, rinse equipment immediately with water.

Once cured, CSC is difficult to remove with water, steam cleaning is successful.




How is CSC Supplied?


CSC is supplied in 1000ltr IBC’s

Minimum order is 1000ltrs




Where can I buy CSC from?


You can purchase CSC ex works Auckland, Melbourne, Korea, Germany.




Payment Terms


Gravel Lock’s payment terms are prepaid or, if approved, on account.




Can I store CSC?


Yes you can store CSC outside for up to 12 months in a cool dry place.




What is the Specific Gravity of CSC?


1000ltrs of CSC weighs 1,100kgs which needs to be accounted for when shipping or storing the product and also 1000ltrs of CSC is charged out at 1100ltrs.




Does CSC have environmental approval?


Yes CSC is a finished manufactured product therefore it is pre-approved for use.




What type of Industries use CSC?


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: Mine Roads Stockpiles Embankment stabilization Construction Sites Mine tailing piles and stock piles Train carriage dust control Temporary car parks Yards Anywhere there is airborne dust that is not trafficked Hydroseeding





 
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XTM FAQ

Frequently asked questions

What type of Industries use XTM?


XTM is a cost effective top down alternative to the traditional methods of stabilizing pavements as well as an effective dust suppression product that can simply be added to water cart: Mine Roads Haul Roads Forestry Roads/Hardstands Mine Sites Construction Sites Agriculture–Service Areas and Access Ways Rural and Council Roads Service roads and hardstands Temporary Roads




What are the main benefits when using XTM?


Using XTM considerable savings can be made particularly when working in remote areas as the significant reduction in imported materials, reduced truck movements, faster construction times, lower labour costs and a smaller carbon footprint all have the potential to save your client substantial construction costs.




Can I use XTM as a water saver?


Yes, XTM 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.




How long do I have to keep my road/yard closed after using XTM?


XTM can be trafficked while applying the product to the pavement, in fact the tyres will aid compaction. However, if large areas are being treated, half of the road can be closed and treated the next day.




Recommended Dose Rate?


Using XTM as a pavement stabilizer using the grader methodology recommended, application rate is1–or 2ltrs per sqm.For dust suppression half a ltr per sqm applied to the pavement in multiple passes.




How do I apply XTM and what equipment do I require?


Stabilizing: Pre-shaping the road and using a roller and drag broom to follow behind the water cart will give your pavement a smooth running surface. Dust Suppression: Water Cart and, (if you have it), a drag broom following behind.




Dilution Rates with water


1st pass 5% XTM: 95% Water 2nd pass 15%XTM: 85% Water 3rd pass 35% XTM: 65% Water Final pass 50%XTM: 50% Water





 
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CSC FAQ

Frequently asked questions

What are the main benefits when using CSC?


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.




How does CSC save me time and money?


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.




How do I use CSC in my project?


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.




How long do I have to keep my road/yard closed after using CSC?


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.




Recommended Dose Rate?


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.




How do I apply CSC and what equipment do I require?


CSC can be applied by water truck, pump and hose or hydroseeding equipment at the recommended dose rates.




What type of soil can I treat with CSC?


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.




What affects the performance of CSC?


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.




How should I clean my equipment?


For uncured cleaning, rinse equipment immediately with water.

Once cured, CSC is difficult to remove with water, steam cleaning is successful.




How is CSC Supplied?


CSC is supplied in 1000ltr IBC’s

Minimum order is 1000ltrs




Where can I buy CSC from?


You can purchase CSC ex works Auckland, Melbourne, Korea, Germany.




Payment Terms


Gravel Lock’s payment terms are prepaid or, if approved, on account.




Can I store CSC?


Yes you can store CSC outside for up to 12 months in a cool dry place.




What is the Specific Gravity of CSC?


1000ltrs of CSC weighs 1,100kgs which needs to be accounted for when shipping or storing the product and also 1000ltrs of CSC is charged out at 1100ltrs.




Does CSC have environmental approval?


Yes CSC is a finished manufactured product therefore it is pre-approved for use.




What type of Industries use CSC?


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: Mine Roads Stockpiles Embankment stabilization Construction Sites Mine tailing piles and stock piles Train carriage dust control Temporary car parks Yards Anywhere there is airborne dust that is not trafficked Hydroseeding





 
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PHF FAQ

Frequently asked questions

What are the main benefits when using CSC?


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.




How does CSC save me time and money?


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.




How do I use CSC in my project?


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.




How long do I have to keep my road/yard closed after using CSC?


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.




Recommended Dose Rate?


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.




How do I apply CSC and what equipment do I require?


CSC can be applied by water truck, pump and hose or hydroseeding equipment at the recommended dose rates.




What type of soil can I treat with CSC?


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.




What affects the performance of CSC?


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.




How should I clean my equipment?


For uncured cleaning, rinse equipment immediately with water.

Once cured, CSC is difficult to remove with water, steam cleaning is successful.




How is CSC Supplied?


CSC is supplied in 1000ltr IBC’s

Minimum order is 1000ltrs




Where can I buy CSC from?


You can purchase CSC ex works Auckland, Melbourne, Korea, Germany.




Payment Terms


Gravel Lock’s payment terms are prepaid or, if approved, on account.




Can I store CSC?


Yes you can store CSC outside for up to 12 months in a cool dry place.




What is the Specific Gravity of CSC?


1000ltrs of CSC weighs 1,100kgs which needs to be accounted for when shipping or storing the product and also 1000ltrs of CSC is charged out at 1100ltrs.




Does CSC have environmental approval?


Yes CSC is a finished manufactured product therefore it is pre-approved for use.




What type of Industries use CSC?


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: Mine Roads Stockpiles Embankment stabilization Construction Sites Mine tailing piles and stock piles Train carriage dust control Temporary car parks Yards Anywhere there is airborne dust that is not trafficked Hydroseeding