TECHNICAL INFORMATION

HydroSTON Permeable Pavers

Introduction Specifications Pedestrian Pavement Essentials Traffic Pavement Essentials Brochure Design Guidelines Construction Guidelines Maintenance Guidelines Research & Publications

Introduction

The following information provides specifications and details for HydroCon’s ‘HydroSTON’ permeable pavers. Should you have any queries or require additional information please contact us on 02 8303 2423 or email

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Specifications

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HydroSTON pavers are sample tested for dimensional variation, strength (breaking load) and weight at 14 and 28 days following production. HydroSTON pavers are also tested from time to time at NATA accredited and other laboratories. Tests relevant to HydroSTON permeable pavers.

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Pedestrian Pavement Essentials

HydroSTON 50 recommended for pedestrian only pavement applications HydroSTON 80 must be used if pavement subject to vehicle loadings – including property maintenance vehicles HydroSTON 50 can be installed without joints Easy substructure design – 100mm min. base course depth Variety of edge restraint options Numerous laying pattern options – stretcher bond, basket weave Suitable over all forms of subgrade, including clay Design substructure for infiltration or stormwater harvesting/waterway discharge Ideal for footpaths, patios, courtyards, walkways, tree surrounds Non-slip – use in aged care developments, schools Improve wet weather comfort – eliminate ponding and wet pavement Where not to use Gradients greater than 8% Pavements subject to vehicle traffic Areas subject to high, uncontrolled sediment flows

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Vehicle Pavement Essentials

HydroSTON 80 must be used if pavement subject to vehicle loadings HydroSTON 80 must be installed with joints (4mm av.) Substructure design depends on subgrade condition – 250mm min. base course depth Can be designed for most forms of subgrade, including clay Design substructure for infiltration or stormwater harvesting/waterway discharge Key design considerations – balancing permeability and structural stability Strong edge restraints required Laying pattern – herringbone bond Suitable for carparks, parking bays, laneways, driveways, road drainage strips, base-flow water harvesting Non-slip, surface and ambient air cooling High ‘albedo’ heat reflective rating – potential to reduce ‘urban heat island’ effects Improve wet weather comfort – eliminate ponding and wet pavement Cleaning and restoration options now available Where not to use Gradients greater than 8% Pavements subject to heavy vehicle loading Areas subject to high, uncontrolled sediment flows Non-maintainable situations Pavement surface less than 600mm above ground water level

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Brochure

View brochure

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Design Guidelines

Detailed guidelines on designing HydroSTON pavements.

Typical HydroSTON pavement for light vehicles and infiltration

Typical HydroSTON pavement for stormwater harvesting or clay subgrade

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Construction Guidelines

Detailed guidelines on constructing HydroSTON pavements

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Maintenance Guidelines

Ability to restore the infiltration capacity of HydroSTON permeable pavements through in-situ cleaning is a positive and distinguishing feature of the HydroSTON product. With regular maintenance, HydroSTON pavements should retain good infiltration capacity for many years (in Germany, similar pavements installed over 20 years ago are still functioning well). In addition, the pavers retain the majority of contaminants close to the surface allowing removal through periodic cleaning.

Regular maintenance of HydroSTON pavements is recommended to prevent clogging of surface voids and to maintain infiltration performance.

	For small areas of HydroSTON pavement, particularly in residential properties, eg footpaths, courtyards and driveways, maintenance can be carried out manually by brooming, vacuum sweeping or machine blowing.
	Recycleaner – an unique new cleaning product, which incorporates a pressure washer and a vacuum recovery system – has been successfully used in HydroSTON pavement cleaning trials. The equipment can be used with an external water supply and with a pressure pump of 1400 psi fitted, a cleaning rate of around 2 m2 per minute should be able to be achieved. The equipment could suit the residential property owner with an extensive area of HydroSTON pavement.
	Regular maintenance of larger trafficable areas with HydroSTON 80 pavers installed can be carried out with street cleaning vehicles that perform sweeping and suction functions – eg The Green Machine range of outdoor sweeper machines or MacDonald Johnston compact sweepers [pictured left - image courtesy Woollahra Council].

Restoration of infiltration capacity is best undertaken with ‘deep pore suction cleaning’ whereby water is injected into the pavement at an angle under high pressure and contaminants removed simultaneously by suction. It is important that the cleaning operation does not force surface material deeper into the body of the paver through the use of inappropriately aligned high pressure hosing. Some industrial wet suction equipment may in fact be detrimental to restoring infiltration capacity.

Joints should be inspected following wet suction cleaning and joint filling topped up as necessary.

For further details or advice on cleaning HydroSTON pavements please call us on 02 8303 2423 or email

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Research & Publications

HydroCon’s permeable products, technologies and installation methods are based on many years of research undertaken in both Germany and Australia.

View research publications relating to HydroSTON permeable pavers

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