REFURBISHMENTTOTAL CORROSION MANAGEMENT TECHNOLOGIES
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When you have a reinforced concrete structure that is starting to deteriorate through corrosion, Sika is the ideal partner of choice. As the only manufacturer able to supply a fully comprehensive range of integrated products and systems for Total Corrosion Management, Sika can help you ensure that the right solution is selected for each specific project.
Whether your structure requires full electrochemical protection with the use of galvanic anodes or corrosion inhibitors, or you require coated or non-coated structures, Sika has the right system solutions. Through having the complete range of solutions, a fully compatible combination of materials and methods can be specified and applied to meet the needs of the owners, budgets and to provide durable long-term protection to the structures.
Everyone obviously prefers to work with a true expert, which is why Sika is the ideal partner and single source supplier of choice for owners, specifiers and contractors. Backed by decades of experience and state-of-the-art expertise, Sika provides the right guidance to ensure the success of your project - be it repair or protection to buildings, bridges or marine structures. Sika has developed an unrivalled knowledge and expertise of building refurbishment and concrete repairs - identifying the root cause of problems, which means time and money saved for you. Put your building trust in Sika, you can be confident of a successful working partnership and refurbishment projects that are fit for many years ahead.
SIKA — YOUR PARTNER
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CONTENT
04 Cost of Corrosion
06 Impacted Areas
07 Corrosion in Reinforced Concrete Structures
08 Corrosion Inhibitor Admixtures
10 Repair Mortars
11 Incipient Anode Corrosion
12 Multi-Functional Corrosion Inhibitors
13 Silane Based Hydrophobic Impregnations
14 Galvanic Anodes
15 Protective Coatings
16 Total Corrosion Management – Selection Guide
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The cost of corrosion is now well documented by various different organizations including NACE in the USA and the World Corrosion Organization. It is estimated that a quarter of the world’s annual steel production is destroyed by corrosion every year. This is equivalent to 150 million tons per year (equivalent to 5 tons/second). As a result the W.C.O. estimate the cost of corrosion as being between 3.1 to 3.5% of a nation’s GDP annually (between € 1.3 and 1.4 trillion ).
A study from COMACAC (Maroc) estimated the cost of corrosion at 5% of GNP and in France this is estimated to cost ~1 € per day per inhabitant of the country (~€ 23 x 103 Million per year)
Sources: World Corrosion Organization, NACE, COMACAC, IMIST-CNRST©-2011-2015
EVERY SECOND 5 TONS OF STEEL ARE DESTROYED BY CORROSION.
COST OF CORROSION
Year % of GDP Source
1950 2,1% US study
1970 3,5% UK study
1974 1,2% Japan study
1975 4,5% US study
1998 3.1% US study
2013 3,1% US study
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In the USA, a NACE report in 2002 provided detailed information about these costs in different sectors such as infrastructures, drinking water and sewer systems etc. Highways and bridges alone cost a staggering $ 8,3 Billion per year
24% / $ 2 Billion
6% / $ 0,5 Billion
46% / $ 3,79 Billion24% / $ 2 Billion
Bridge replacement
Maintenance of concrete bridge decks
Maintenance of concrete sub- and superstructures
Painting maintenance of steel bridge
Corrosion Cost of Highway Bridges – Total: $ 8.29 Billion per year
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IMPACTED AREAS
Car Parks
Concrete Buildings
Silos
Bridges
Steel Framed Mansory Buildings
Marine Structures
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Rust
7
AGGRESSIVE INFLUENCES ON REINFORCED CONCRETE
THE EFFECT OF THE AGGRESSIVE INFLUENCES
In reinforced concrete the steel is normally protected against corrosion by the passivating alkalinity of the cement matrix. Due to the ingress of aggressive environmental influences the steel can corrode. Three condi-tions must exist for reinforcing steel to corrode:
The passivation of the steel must have been destroyed by chlorides or by carbonation
The presence of moisture as an electrolyte The presence of oxygen
CARBONATIONCarbon dioxide ingress causes carbonation of the cement matrix progres-sively reducing the passivating alkaline protection of the steel reinforce-ment to a level where corrosion can occur.
CHLORIDE ATTACKChloride ions from deicing salts or marine exposure are carried into the concrete in solution in water. At the steel surface, even in alkaline concrete, they attack and break down the passivating layer and then accelerate the steel corrosion process.
CHLORIDES/CARBONATIONAs soon as sufficient chloride ions (from deicing salts or marine exposure) or the carbonation front have reached the steel surface, the passive layer is destroyed and corrosion accelerates.
CONTACT WITH WATER (MOISTURE)The original neutral iron will receive a negative charge as the positively loaded ions have the tendency to dissolve. The water film around the metal turns positive.
CONTACT WITH OXYGENThe oxygen takes on the negative charge of the iron ions which have gone into solution. The result is iron hydroxide, the first stage of rust.
Chlorides
Oxygen
WaterCathode
Anode
Carbon Dioxide
Chlorides
Oxygen
Water
CORROSION IN REINFORCED CONCRETE STRUCTURES
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Concrete is a marvelous building material, not least because in combination with reinforcing steel it exhibits tremendous load-bearing capacity. This combination of steel and concrete has the advantage that under normal conditions, the high pH value of concrete creates a passivating layer of iron hydroxides on the steel surface, which protects it from corrosion. However, steel can be compromised in its durability and performance by the presence of moisture and salt.
Chlorides are displaced at the steel surface by Sika® FerroGard®, which forms a protective film that moves the corrosion poten-tial and reduces the current densities to a very low level. Standard design and construction practice ensures that the corrosion of steel reinforcements is limited. This includes observing minimum concrete quality (w/c-ratio, cement content, minimum strength) and maintaining minimum concrete cover over the steel bars. However, in many cases, especially in environments with high levels of chlorides (de-icing salts, seawater or even contaminated concrete mix components), these basic protection procedures can prove insufficient.
Damage to concrete structure due to insufficient concrete cover and low concrete quality.
Concrete mix design advice and recommended measures:
Components Description Example formula
Aggregates Any quality aggregates possible All aggregate sizes are possible
Cement Any cement meeting local standards Target cement paste volume as low as possible for the respective placing method
Powder additives Fly ash, ground granulated blast furnace slag, silica fume, natural pozzolanes
Water content Fresh water and recycling water with requirements regarding fines content
w/c-ratio according to standards with regard to exposure class
< 0.46
Concrete admixtures Supperplasticizer The dependent on placement and early strength requirements
Corrosion inhibitor
Sika® ViscoCrete® SikaPLast®Sikament®
Sika® FerroGard®-901Sika® CNI
0.60 – 1.50%
10 – 12 kg/m³13 – 40 kg/m³
Installation require-ments and curing
Curing compoundCuring that starts as early as possible and is maintained for a sufficient period of time has significant influence on plastic and drying shrinkage
Careful installation and compaction.Subsequent curing to ensure high quality (compactness) of surfaces Sika® Antisol®
CORROSION INHIBITOR ADMIXTURE
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5 15 25 35 45 55 65 75 85 95 105 115 125 135 145 155 165 5 15 25 35 45 55 65 75 85 95 105 115 125 135 145 155 165 5 15 25 35 45 55 65 75 85 95 105 115 125 135 145 155 165
5 -5 -60 -10 -70 -15 -50 -10 -60 0 -115 -5 -65 -5 -95 -40 -100 -20 5 -50 -115 -40 -75 -35 -50 -40 -75 -15 -75 -40 -85 -40 -80 -35 -110 -55 5 -55 -105 -80 -155 -65 -105 -55 -65 -55 -130 -55 -75 -65 -70 -35 -110 -55
15 -50 -135 -40 -140 -60 -120 -45 -135 -15 -140 -35 -140 -20 -135 -155 -150 -80 15 -85 -180 -60 -150 -60 -155 -115 -155 -35 -160 -85 -165 -60 -155 -45 -190 -90 15 -115 -200 -70 -215 -95 -170 -105 -125 -85 -185 -75 -105 -95 -115 -60 -185 -130
25 -70 -145 -75 -170 -130 -150 -60 -155 -55 -140 -110 -135 -115 -175 -185 -175 -120 25 -165 -170 -70 -165 -145 -185 -155 -175 -110 -180 -170 -215 -130 -185 -125 -220 -150 25 -170 -220 -190 -220 -140 -230 -170 -155 -105 -190 -90 -170 -140 -195 -105 -200 -175
35 -135 -170 -135 -155 -170 -175 -70 -190 -115 -140 -115 -160 -145 -170 -195 -185 -155 35 -185 -170 -125 -175 -165 -200 -185 -180 -140 -165 -185 -190 -220 -230 -190 -225 -235 35 -190 -245 -240 -205 -185 -245 -195 -170 -145 -205 -130 -190 -160 -210 -170 -175 -235
45 -175 -175 -160 -150 -185 -185 -145 -190 -120 -150 -115 -165 -155 -185 -195 -195 -165 45 -175 -160 -170 -170 -155 -190 -190 -185 -175 -180 -170 -190 -240 -195 -225 -275 -260 45 -210 -265 -240 -220 -260 -280 -215 -225 -170 -220 -180 -235 -200 -240 -205 -245 -255
55 -185 -190 -150 -170 -180 -180 -180 -195 -165 -175 -115 -200 -145 -190 -175 -215 -160 55 -175 -170 -175 -180 -155 -210 -190 -185 -185 -175 -180 -240 -210 -260 -210 -285 -270 55 -225 -275 -245 -255 -225 -295 -220 -235 -185 -260 -185 -270 -180 -280 -185 -255 -270
65 -180 -205 -140 -160 -190 -195 -190 -200 -175 -175 -150 -195 -170 -205 -190 -205 -180 65 -180 -210 -185 -175 -205 -235 -175 -195 -180 -190 -230 -220 -225 -220 -240 -350 -315 65 -215 -300 -250 -270 -255 -305 -235 -245 -200 -260 -220 -265 -205 -280 -245 -275 -285
75 -200 -220 -150 -155 -210 -215 -200 -210 -195 -210 -150 -200 -195 -195 -205 -205 -205 75 -180 -215 -195 -185 -195 -220 -175 -225 -195 -185 -180 -255 -275 -265 -270 -360 -355 75 -285 -315 -310 -300 -285 -345 -245 -265 -230 -295 -240 -285 -240 -295 -280 -255 -310
85 -190 -220 -190 -195 -210 -215 -200 -205 -205 -210 -145 -205 -195 -205 -180 -200 -225 85 -170 -220 -215 -175 -205 -230 -175 -225 -210 -200 -245 -275 -250 -290 -240 -330 -375 85 -295 -305 -300 -325 -290 -345 -280 -280 -215 -290 -245 -345 -220 -330 -305 -270 -325
95 -225 -235 -200 -210 -225 -215 -205 -210 -195 -205 -200 -240 -205 -220 -220 -225 -225 95 -195 -245 -190 -230 -240 -220 -205 -245 -220 -235 -255 -235 -250 -295 -260 -335 -430 95 -275 -330 -325 -325 -290 -390 -305 -295 -210 -305 -275 -370 -265 -375 -325 -325 -310
105 -225 -235 -210 -205 -235 -250 -205 -225 -220 -220 -220 -265 -220 -225 -265 -210 -230 105 -185 -230 -250 -240 -235 -255 -255 -270 -230 -210 -285 -255 -280 -275 -325 -420 -360 105 -295 -350 -285 -375 -325 -415 -315 -350 -250 -345 -305 -375 -270 -370 -325 -370 -250
115 -180 -255 -205 -210 -230 -255 -225 -250 -235 -235 -225 -260 -240 -220 -270 -245 -225 115 -220 -250 -250 -245 -235 -250 -225 -265 -250 -250 -235 -275 -285 -325 -320 -400 -430 115 -380 -355 -320 -355 -360 -420 -350 -370 -315 -320 -320 -405 -325 -360 -340 -380 -350
125 -240 -255 -210 -205 -235 -260 -235 -260 -235 -245 -210 -260 -210 -240 -240 -245 -240 125 -235 -260 -230 -260 -240 -290 -245 -250 -260 -260 -290 -310 -295 -305 -330 -440 -495 125 -380 -375 -370 -370 -305 -450 -370 -360 -325 -330 -330 -380 -335 -355 -355 -375 -360
135 -255 -245 -235 -215 -255 -255 -250 -265 -215 -255 -260 -270 -245 -250 -275 -230 -250 135 -220 -275 -245 -250 -260 -300 -260 -310 -210 -280 -310 -320 -295 -305 -350 -460 -480 135 -360 -415 -400 -410 -345 -450 -380 -380 -335 -340 -380 -380 -340 -365 -385 -390 -385
145 -245 -215 -255 -240 -255 -275 -245 -275 -260 -255 -275 -280 -285 -295 -290 -235 -260 145 -225 -300 -265 -255 -240 -310 -275 -310 -245 -285 -285 -335 -280 -320 -350 -465 -460 145 -365 -455 -435 -430 -395 -445 -460 -355 -415 -390 -420 -400 -390 -395 -405 -435 -490
155 -245 -200 -250 -255 -260 -250 -245 -280 -280 -285 -270 -290 -290 -330 -325 -150 -265 155 -230 -310 -260 -250 -265 -265 -265 -325 -320 -295 -315 -330 -255 -350 -345 -450 -460 155 -375 -465 -460 25 -435 105 -370 -365 -380 -420 -360 -400 -390 -420 -405 -440 -400
165 165 165
175 175 175
185 -170 -300 -160 -275 -240 -285 -235 -295 -165 -295 -255 -285 -280 -230 -250 -270 -45 185 -300 -350 -160 -280 -185 -340 -240 -210 -295 -335 -260 -340 -345 -355 -295 -405 -460 185 -335 -405 -455 -385 -295 -320 -270 -340 -260 -360 -355 -355 -355 -370 -295 -375 -305
195 -235 -155 -230 -175 -240 -175 -250 -175 -270 -145 -285 -165 -310 -185 -320 -185 -310 195 -315 -270 -345 -220 -310 -215 -305 -210 -335 -255 -290 -210 -325 -240 -315 -245 -370 195 -305 -250 -350 -260 -355 -235 -365 -270 -350 -300 -385 -280 -395 -280 -350 -230 -325
Legend potentials (mV CSE) Legende Coordinates
Concrete removal for visual inspection Location of chloride analysis x and z axis in cm
<-45
0
>-45
0
>-40
0
>-35
0
>-30
0
>-25
0
>-20
0
>-15
0
>-10
0
>-50 >0
Guide rail Guide rail Guide rail
E2 (FerroGard 901) E3 (SikaFume-HR) E1 (Referenzbeton)
9
In order to prevent corrosion or delay its start and thereby extend the life of a structure, four additional steps can be taken to protect reinforcing steel from corrosion:
increase the concrete quality increase the concrete cover utilize corrosion inhibitors apply protective surface treatments / coatings
18+ YEARS OF FIELD EXPERIENCE – Sika® FerroGard®-901Long-term, well documented field experience with organic corrosion-inhibiting admixtures for reinforced concrete is scarce. Sika contributes to closing this gap of knowledge by reporting on 18 years of field performance for a proprietary inhibitor formulation based on alkanolamines (Sika® FerroGard®-901). Sika launched the Sika® FerroGard® corrosion inhibitor in 1994. It was obvious that it would be rather difficult to convince owners and specifiers of the efficacy of a product that would show its performance most clearly in 20 years or even later. Therefore in order to ultimately show this long-term performance effect Sika started a long-term test in the Swiss mountains in 1995.Reinforced concrete elements were exposed to chloride-bearing splash water on a road in the Swiss Alps. Periodically, the chloride profiles were measured and the specimens were monitored by galvanic current measurement, potential mapping, and electrical concrete resistance measurement. After 18 years, additional electrochemical measurements were taken on-site and selected zones of the reinforcement steel were visually inspected. Whilst in the untreated reference concrete, corrosion initi-ated after approx. 8 – 9 years at a cover depth of 15 mm (a concrete cover of only 15 mm had been chosen deliberately, in order to have meaningful results within a reasonable time frame), the reinforcing steel in the concrete with Sika® FerroGard® corrosion inhibitor was still essentially free from corrosion (at identical cover depths) after 18 years. Thus, under the realistic exposure conditions of this long-term field test, the corrosion inhibitor increased the time to initiation of chloride-induced reinforcing steel corrosion by a factor of approximately 2.
RESULTS: POTENTIAL MEASUREMENTS 2013
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When spalling occurs, defects are generally now repaired using quality controlled, pre-batched repair mortars.In Europe, these repair materials should be in accordance with EN 1504-9 Principle 3 (CR) Concrete Restoration and comply with EN 1504-3.Different application techniques can be used depending on the extent and location of the damage, including hand-placed, poured with formwork or machine spray applied (methods 3.1, 3.2 & 3.3 of EN 1504-9 respectively.
Damaged concrete structure Sprayed mortar
Hand applied mortar Repair work completed
REPAIR MORTARS
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When repair mortars are used to re-profile areas which have spalled due to corrosion induced by chlorides, the previously anodic zone is turned cathodic due to the high alkalinity of the fresh mortar.The previous cathodic zone is therefore now turned anodic and as chlorides and moisture are already present, if no other means of protection / prevention is provided, corrosion will be induced in the surrounding area of the repair at a fast rate. This phe-nomenon is known as incipient anode corrosion, or the ‘halo effect’.This is one of the major causes of premature failures of concrete repairs in chloride environments.A paper presented at the CONREPNET conference in Cape Town, South Africa in 2008 showed that 50% of such repairs exhibit signs of failure within the first 5 years after the repair work was carried out.
INCIPIENT ANODE CORROSIONS
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ChloridesAnode
Rust
Chlorides
Oxygen
WaterCathode
12
SIKA OFFERS A FULL RANGE OF SYSTEMS REQUIRED FOR THE TECHNICAL CORRECT REPAIR AND PRORECTION OF CONCRETE TO MEET EN 1504. From protection against ingress to control of anodic areas, the BS 11 principle allows engineers to specify the appropriate solution for any situation.
Sika® FerroGard®-903 Plus is: a unique blend of non toxic, organic corrosion inhibitor based on amino alcohol and salts of amino alcohol technology, designed for use as an impregnation on hardened reinforced concrete.
a multifunctional inhibitor which controls the cathodic and anodic reactions. This dual action effect significantly retards both the onset and the rate of corrosion and increases the time to future maintenance. Sika® FerroGard®-903 Plus is normally applied as part of a corrosion management strategy.
compatible and a component of all the Sika concrete repair and protection systems.
PROTECTIVE LAYERSika® FerroGard®-903 Plus forms an adsorbed protective film on the reinforcement. The process of forming this protective film takes place even in carbonated concrete and even with the presence of chlorides in the concrete.
DELAY OF THE CORROSION PROCESS The dissolution of the iron in contact with water will be reduced thanks to this passivating protective film
This film is also a barrier to the reduction of oxygen which will be prevented
APPLICATIONSika® FerroGard®-903 Plus is applied as an impregnation by spray, roller or brush onto the surface of the concrete. The corrosion inhibitor penetrates into the con-crete and protects the reinforcement by forming a protective film on the steel surface. Through this the onset of corrosion is delayed and the rate of corrosion reduced.
THE PERFORMANCE OF Sika® FerroGard®-903 Plus
MULTI-FUNCTIONAL CORROSION INHIBITORS
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ONE OF THE METHODS RECOMMENDED BY EN 1504-9 to mitigate corrosion is to increase the resistivity of the concrete surrounding the reinforcing steel bars. If the moisture content falls below a certain level, even in chloride contaminated or carbonated concrete, corrosion is significantly reduced.
Hydrophobic impregnation treatments with silane based materials such as Sikagard®-705 L or Sikagard®-706 Thixo, will pre-vent further ingress of water into the treated concrete, whilst still allowing moisture in the concrete to escape as water vapor, thereby resulting in a dryer environment around the steel reinforcement.Another important feature of these silane based products is their ability to block the ingress of other contaminants such as chlorides dissolved in water.These products can penetrate deeply through the concrete surface making their protection effective even in the presence of cracks. Numerous independent tests and evaluations have been performed to confirm the above.
Average macrocell current Silane applied after cracking and before corrosion initiation
Average macrocell current Silane applied after cracking and after corrosion initiation
80 80
90 90
100 100
60 60
70 70
40 40
50 50
20 20
30 30
10 10
0 0
Time in days Time in days
Mac
roce
ll cu
rren
t [µA
]
Mac
roce
ll cu
rren
t [µA
]
400 400200 200600 600800 8001000 10000 0
Control Sikagard®-705 L (300 g/m²)
Control Sikagard®-705 L (300 g/m²)
Sikagard®-705 L (500 g/m²) Product X (500 g/m²)
Sikagard®-705 L (500 g/m²) Product X (500 g/m²)
Wetting period no water / low vapor absorption
Drying period high vapor evaporation
SILANE BASED HYDROPHOBIC IMPREGNATION
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As zinc and its alloys are less noble than iron and steel, they will corrode preferentially when moisture and contaminants are present near the steel reinforcing bars, thereby putting the steel in cathodic mode and hence preventing steel corrosion from developing.Sika® FerroGard®- Patch CC anodes are placed directly in the reinforced concrete to be protected and work in galvanic mode. Sika® FerroGard® Duo hybrid anodes are placed throughout large areas of reinforced con-crete to provide protection and control corrosion. In many situations, these hybrid anodes can be an attractive alternative to impressed cur-rent cathode protection system.For a short period (typically around one week), a high density current is applied using an external power supply. This has the effect of localized chloride extraction and realkalization – hence the reinforcing steel bars return to a passive mode. Following this impressed current phase, the external current supply is removed and so the system runs fully in galvanic mode, which maintains the steel in a passive environment.
TO CONTROL CORROSION IN SOUND BUT CONTAMINATED CONCRETE, galvanic anodes can be inserted into concrete that is not yet corroding.
GALVANIC ANODES
When the galvanic anodes are placed around the repair areas and incipi-ent anodes are triggered, the galvanic anodes will corrode in preference to the reinforcing steel; thus preventing premature failure of the repair and ex-tending the life of the structure. Sika® FerroGard®-650, -655 or -670, or Sika® FerroGard® Reba are placed within the repair areas, whilst Sika® FerroGard® Patch anodes are inserted in the sound parent concrete around the periphery of the areas to be repaired. Hence by using Sika® FerroGard® Patch, a protective current is delivered directly to the steel outside of the patch repair and which is at greater risk of corrosion, as opposed to the cleaned steel within the repair zone.
TO PREVENT INCIPIENT ANODE CORROSION (also known as the ‘halo’ effect), galvanic anodes can be inserted in the periphery of the areas that are patch repaired.
For both incipient anode mitigation and corrosion control, Sika® FerroGard® an-odes are available with different levels
of zinc content, in order to cater for the required service-life extension of the structure.
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To allow the concrete to dry out, the protective coatings must allow the residual moisture in the structure to escape as water vapour. For these applications 1-component water or solvent based protective coatings are generally used. However, in some situations it may be preferable to entrap the moisture, but prevent the future ingress of chlorides and other aggressive contaminants, plus to prevent oxygen migration as well. In these cases, impermeable high build epoxy resin based 2-component coatings are usually the preferred choice.
The Arenc silos in the port of Marseille in France, were refurbished in 2008 and the reinforced concrete facades were protected with a corrosion inhibitor and cement based protective coating (Sika® FerroGard®-903 and SikaTop® Seal-107 respectively).
The Saldahan jetty in South Africa is a typical reference for the use of a com-bined system to protect the reinforced concrete structure against future cor-rosion. For this complex and demand-ing project a surface applied corrosion inhibitor was applied, followed by a hydrophobic impregnation and then an elastic protective coating (Sika® Ferro-Gard®-903, Sikagard®-706 Thixo and Sikagard®-550 W Elastic respectively.
DEPENDENT ON THE ROOT CAUSE(S) OF CORROSION (e.g. carbonation or chloride induced corrosion), protective coatings can be used as stand-alone system, or combined with surface applied corrosion inhibitors and/or hydrophobic impregnation to provide protection to concrete structures.
PROTECTIVE COATINGS
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REPAIR MORTARS
PROTECTIVE COATINGS
TOTAL CORROSION MANAGEMENT – SELECTION GUIDE
Application Parameters Usage
CorrosionProtection
Patch Repair
Spray Repair
Bridges Car parks Buildings Tunnels Marine structures
SikaTop® Armatec® 110 EpoCem® xxx N/A N/A xxx xx x xxx xxx
Sika MonoTop®-910 N xxx N/A N/A xx xx xxx x x
Sika MonoTop®-412 N N/A xxx xxx xx xx xxx xxx x
Sika MonoTop®-412 NFG N/A xxx xxx xxx xxx x xxx xxx
Legend: xxxx: Best performance xxx: Very suitable xx: Suitable x: can be considered for short to medium term – : Not suitable N/A: Not applicableNote*: Strong dense shades have lower color retention and UV resistance than lighter pastel shades – refresher coats may be applied, but at reduced intervals, to maintain the aesthetics of the structure
Aesthetic Parameters Performance Parameters Application Parameters Usage
Color retention*
UV resistance*
Dirt pick up resistance
Crack bridging
Long term performance
Mechanical cleaning resistance
VOCHand application
Machine application
Bridges Car parks Buildings TunnelsMarine structures
Sikagard®-550 W Elastic xxx xxx xx xxx xxx – xxxx xxxx xxxx xxxx xxx xxxxx – xx
Sikagard®-545 W ElastoFill + Sikagard®-550 W Elastic
xxx xxx xx xxxx xxx – xxxx xxxx xxxx xxx xxx xxxxx – xx
Sikagard®-675 W ElastoColor xxx xxx xxx x xxx x xxxx xxxx xxxx xxx xxx xxx x xx
Sikagard®-680 S BetonColor xxx xxxx xxx – xxxx x – xxxx xxxx xxxx xxxx xx x xx
Sikagard®-720 EpoCem® – xxx x – xx – xxx xxx xxx xxx xxx – xxx xx
SikaTop® Seal-107 xx xx x x xx – xxxx xxx xxx xxx xx xxx – xx
Sikagard® WallCoat T x – xxx – xxx xxxx xx xxxx xxx xx – xxxx –
Sikagard®-260 W PU xxx xxxx xxx – xxx xxxx xx xxxx xxx xxx – xxxx –
SikaCor SW-500 x – xx – xxx xxx x xxx xxx – – – xxxx
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Application Parameters Usage
CorrosionProtection
Patch Repair
Spray Repair
Bridges Car parks Buildings Tunnels Marine structures
SikaTop® Armatec® 110 EpoCem® xxx N/A N/A xxx xx x xxx xxx
Sika MonoTop®-910 N xxx N/A N/A xx xx xxx x x
Sika MonoTop®-412 N N/A xxx xxx xx xx xxx xxx x
Sika MonoTop®-412 NFG N/A xxx xxx xxx xxx x xxx xxx
Aesthetic Parameters Performance Parameters Application Parameters Usage
Color retention*
UV resistance*
Dirt pick up resistance
Crack bridging
Long term performance
Mechanical cleaning resistance
VOCHand application
Machine application
Bridges Car parks Buildings TunnelsMarine structures
Sikagard®-550 W Elastic xxx xxx xx xxx xxx – xxxx xxxx xxxx xxxx xxx xxxxx – xx
Sikagard®-545 W ElastoFill + Sikagard®-550 W Elastic
xxx xxx xx xxxx xxx – xxxx xxxx xxxx xxx xxx xxxxx – xx
Sikagard®-675 W ElastoColor xxx xxx xxx x xxx x xxxx xxxx xxxx xxx xxx xxx x xx
Sikagard®-680 S BetonColor xxx xxxx xxx – xxxx x – xxxx xxxx xxxx xxxx xx x xx
Sikagard®-720 EpoCem® – xxx x – xx – xxx xxx xxx xxx xxx – xxx xx
SikaTop® Seal-107 xx xx x x xx – xxxx xxx xxx xxx xx xxx – xx
Sikagard® WallCoat T x – xxx – xxx xxxx xx xxxx xxx xx – xxxx –
Sikagard®-260 W PU xxx xxxx xxx – xxx xxxx xx xxxx xxx xxx – xxxx –
SikaCor SW-500 x – xx – xxx xxx x xxx xxx – – – xxxx
REFURBISHMENTTOTAL CORROSION MANAGEMENT TECHNOLOGIESREFURBISHMENTTOTAL CORROSION MANAGEMENT TECHNOLOGIES18
Legend: xxxx: Best performance xxx: Very suitable xx: Suitable x: can be considered for short to medium term – : Not suitable – : Not suitable N/A: Not applicableNote*: Depending on the types of anodes used, refer to specific brochures.
HYDROPHOBIC IMPREGNATIONS
TOTAL CORROSION MANAGEMENT – SELECTION GUIDE
Product Types Performance Parameters Application Parameters Usage
Galvanic anodes
Surface applied corrosioninhibitor
Concrete admixture corrosion inhibitor
Corrosion prevention and control
Corrosionprotection
New construction
Incipient anodesmitigation
Carbonation inducedcorrosion
Bridges Car parks Buildings TunnelsMarine structures
Chloride content % bwc
<1% >1%
Sika® FerroGard® Anodes* N/A – N/A xxxx xxxx xxxx xx xxxx xxxx xxxx xxxx xxxx xxxx xxxx
Sika® FerroGard®-903 Plus N/A – xx xx – N/A xx xxxx x x xxx x x
Sika® FerroGard®-901 S N/A N/A xxxx – N/A xxxx – – xxxx N/A N/A N/A xx
Sika® FerroGard®-910 CNI N/A N/A xxxx – N/A xxxx – – xx N/A N/A N/A xxxx
Aspect Performance Parameters Application Parameters Usage
Liquid ThixotropicChlorideprevention
Penetrationbehavior
DurabilityCorrosionprotection
Freeze-thawresistance
VOC Vertical Overhead Horizontal Bridges Car parks Buildings TunnelsMarine structures
Sikagard®-705 L N/A xxxx xxxx xxxx xxxx xxxx xx xx xx xxxx xxxx xxxx xxx xxxx xxxx
Sikagard®-706 Thixo xxxx xxxx xxxx xxxx xxxx xxx xxxx xxxx x xxxx xxxx xxxx xxxx xxxx
Sikagard®-704 S N/A xx xxx xxx xx xx – x x xxxx xx xxx – xx xx
Sikagard®-740 W N/A xx xx xx xx xx xxxx xx xx xxxx x xx xxxx xx x
Sikagard®-700 S N/A x x x – – – x x xxxx x x x x x
CORROSION INHIBITORS AND GALVANIC ANODES
REFURBISHMENTTOTAL CORROSION MANAGEMENT TECHNOLOGIES
REFURBISHMENTTOTAL CORROSION MANAGEMENT TECHNOLOGIES 19
Product Types Performance Parameters Application Parameters Usage
Galvanic anodes
Surface applied corrosioninhibitor
Concrete admixture corrosion inhibitor
Corrosion prevention and control
Corrosionprotection
New construction
Incipient anodesmitigation
Carbonation inducedcorrosion
Bridges Car parks Buildings TunnelsMarine structures
Chloride content % bwc
<1% >1%
Sika® FerroGard® Anodes* N/A – N/A xxxx xxxx xxxx xx xxxx xxxx xxxx xxxx xxxx xxxx xxxx
Sika® FerroGard®-903 Plus N/A – xx xx – N/A xx xxxx x x xxx x x
Sika® FerroGard®-901 S N/A N/A xxxx – N/A xxxx – – xxxx N/A N/A N/A xx
Sika® FerroGard®-910 CNI N/A N/A xxxx – N/A xxxx – – xx N/A N/A N/A xxxx
Aspect Performance Parameters Application Parameters Usage
Liquid ThixotropicChlorideprevention
Penetrationbehavior
DurabilityCorrosionprotection
Freeze-thawresistance
VOC Vertical Overhead Horizontal Bridges Car parks Buildings TunnelsMarine structures
Sikagard®-705 L N/A xxxx xxxx xxxx xxxx xxxx xx xx xx xxxx xxxx xxxx xxx xxxx xxxx
Sikagard®-706 Thixo xxxx xxxx xxxx xxxx xxxx xxx xxxx xxxx x xxxx xxxx xxxx xxxx xxxx
Sikagard®-704 S N/A xx xxx xxx xx xx – x x xxxx xx xxx – xx xx
Sikagard®-740 W N/A xx xx xx xx xx xxxx xx xx xxxx x xx xxxx xx x
Sikagard®-700 S N/A x x x – – – x x xxxx x x x x x
Our most current General Sales Conditions shall apply. Please consult the Data Sheet prior to any use and processing.Our most current General Sales Conditions shall apply. Please consult the Data Sheet prior to any use and processing.
REFURBISHMENT CONCRETE REPAIR AND PROTECTION OF CHIMNEYS AND COOLING TOWERS
REFURBISHMENT Sika® FerroGard®-903 PlusTHE UNIQUE MULTI-FUNCTIONAL SURFACE APPLIED CORROSION INHIBITOR FOR REINFORCED CONCRETE
REFURBISHMENTSIKA TECHNOLOGIES AND SOLUTIONS FOR WASTE WATER TREATMENT PLANTS
REFURBISHMENTSIKA SOLUTIONS FOR BRIDGES
REFURBISHMENTPROTECTIVE COATINGS FOR CONCRETE
REFURBISHMENTSIKA TECHNOLOGY AND CONCEPTS FOR HYDROPHOBIC IMPREGNATIONS
IN ACCORDANCE WITH EUROPEAN STANDARDS EN 1504
REFURBISHMENTTHE REPAIR AND PROTECTION OF REINFORCED CONCRETE WITH SIKA
CONSTRUCTION SOLUTIONS LONG-LASTING, HIGH-QUALITY HEALTH-CARE FACILITIES
SIKA SERVICES AGTueffenwies 16CH-8048 ZurichSwitzerland
ContactPhone +41 58 436 40 40www.sika.com
© S
IKA
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WE ARE SIKASika is a specialty chemicals company with a leading position in the development and production of systems and products for bonding, sealing, damping, reinforcing and protecting in the building sector and the motor vehicle industry. Sika's product lines feature concrete admixtures, mortars, sealants and adhesives, structural strengthening systems, flooring as well as roofing and waterproofing systems.