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Principle 10

Cathodic protectionBS EN 1504-9:2006

BS EN 1504 Principle 10 is concernedwith cathodic protection of theconcrete structure. This is appropriatewhere chloride contamination is

significant or carbonation has reachedthe reinforcement resulting in a highrisk of corrosion. Impressed currentcathodic protection applied in

accordance to EN 12696 can controlcorrosion, counteracts the incipientanode effect and can limit the amountof concrete removal.

2.2

CPCP

1 Significant chloride contaminationContaminated concrete due to chlorides,leading to reinforcement corrosion and spalledconcrete.

CPCP

3 Corroded steelSteel sections corroding within encasedconcrete, causing reinforcement corrosionand spalled concrete.

CPCP

2 Extensive carbonationExtensive carbonation of concrete due to lowconcrete cover and carbon dioxide CO² diffusion,leading to reinforcement corrosion.

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Solution 10Principle 10: Cathodic protection

Methods of protection based upon theBS EN 1504 Principle 10 is the use ofthe following:

10.1 Applying electrical potential. Note: Protection should be carried outby CP experts involving CP design tooptimise the long-term effectivenessof the system.

2.2

BS EN 1504-3: Structural and non-structural repairBS EN 12696:2000: Cathodic protection of steel in concrete

Areas of use BuildingsBridgesPiers, jetties etcCar parksand more...

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CRCR

1 Concrete repairUsing CP grade repair mortar orconcrete.

weber.cem mortar CPFive Star repair concrete CP

BS EN 1504-3

CRCR

2 Concrete repairUsing CP grade sprayed concrete orrepair concrete.

weber.cem spray CPFive Star repair concrete CP

BS EN 1504-3

CRCR

3 Recasting concreteRecasting concrete around the steelsection using CP grade repair concrete.

Five Star repair concrete CP

BS EN 1504-3

For detailed instructions, please refer to the relevantproduct data sheet. For further information, please contactour Technical Helpline on 01525 722110.