Surface Treatments For The Protection Of Concrete

( Outline )

 

 

Introduction:

w       Definitions

 

Reasons For The Treatments

w       Chemical resistance

§        Sulphate 

­       Acid

­       Other chemicals

w       Ingress control

§        Carbon dioxide

­       Oxygen

­       Chloride

­       Moisture control

w       Mechanical and physical

§        Salt crystallisation

§        Resistance

­       Thermal movements

­       Abrasion and impact

­       Anti-skid

­       Static electricity & spark risk

 

Characteristics And Classification

w       Generic

§        Inorganic

­       Organo-metallic

­       Organo-silicon

­       Organic

 

w       functional

§        Penetrant pore liners

­       Penetrant pore blockers

­       Sealers

­       Coatings

­       Renderings

 

Selection Process                                                     

w       Functions

w       Elements of protective system

w       Performance requirements

w       Affecting factors

§        Economical

­       Chemical & physical

­       Application parameters

­       Safety requirements

 

w       Guide and common application

 

Application And Workmanship

w       Surface preparations

§        New concrete

­       Design

­       Release agents on forms

­       Curing compounds

­       admixture in concrete

 

§        Old Concrete

­       Removal and repair defects

­       Stopping or rerouting of water

­       Cleaning

­       chemical

­       Mechanical

­       Acid etching

­       Testing

­       Cleanliness

­       dryness   

­       strength

 

w       Access                                                                                    

w       Application                                                                             

w       Coating thickness and coverage rate                                      

w       Environmental considerations

§        Solvents and odours                    

§        Ambient conditions               

§        Moisture content of concrete

 

w       Inspection and supervision

w       Maintenance

§        Need for maintenance              

­       Preparation of surfaces

­       Over-coating existing treatments

­       Compatibility with existing treatments

 

 

Performance Assessments

w       Chemical resistance

w       Ingress control

w       Mechanical and physical resistance

 

Health, Safety And Environmental Aspects