Non Non Sh Shie ield ldin ing Te Testing INGE NGECA CA Fr - - PowerPoint PPT Presentation

▶
non non sh shie ield ldin ing te testing inge ngeca ca fr
SMART_READER_LITE
LIVE PREVIEW

Non Non Sh Shie ield ldin ing Te Testing INGE NGECA CA Fr - - PowerPoint PPT Presentation

Sep 20, 2023 562 likes •683 views

Non Non Sh Shie ield ldin ing Te Testing INGE NGECA CA Fr France ance Obj Objectiv ctives es: To measure over time the current quantities on 30mm x 40mm coupons located under Polyguard RD 6 coating: Coupons #1

slide-1
SLIDE 1

Non Non‐Sh Shie ield ldin ing Te Testing INGE NGECA CA ‐ Fr France ance

slide-2
SLIDE 2

Obj Objectiv ctives es:

‐ To measure over time the current quantities on 30mm x 40mm coupons located under Polyguard RD‐6 coating: ‐ Coupons #1 & #2: located under intentionally disbonded RD‐6 (with void) ‐ Coupon #3: located under properly applied RD‐6 (without void) ‐ To measure the water pH after 3 months under disbonded Polyguard RD‐6 coating (Coupons #1 & #2) ‐ To visually inspect the status of the steel coupons after 3 months in electrolyte under CP current and compare it with a CP protected non‐coated marker and a non‐CP protected non‐coated marker

Plastic support

Coupons #1 & #2: Under intentional disbonded RD‐6 (With void) Coupon #3: Under properly applied RD‐6 (Without void)

slide-3
SLIDE 3

Sam Samples les pr prepar eparations ions

Coupons #1 & #2: Under intentionally disbonded RD‐6 With void Coupon #3: Under properly applied RD‐6 Without void

slide-4
SLIDE 4

In Intentio ionally lly di disbonded sbonded RD RD‐6 Coupons

Coupons #1 #1 & #2 #2

slide-5
SLIDE 5

Wa Water in inje jectio ction under under di disbonded sbonded RD RD‐6 Coupons

Coupons #1 #1 & #2 #2

slide-6
SLIDE 6

Additional Additional non non‐co coate ated steel eel Ma Markers

In the same electrolyte (CP protected) In the same electrolyte but different container (non‐CP protected)

slide-7
SLIDE 7

Af After ter 3 mo mont nths hs …

Coupons #1 & #2 Visual inspection: Non corrosion

High pH: 12

slide-8
SLIDE 8

Af After ter 3 mo mont nths hs …

Non‐coated marker CP protected: Calcareous sediment Non‐coated marker Non‐CP protected: Totally corroded Coupons #1, #2 & #3: No corrosion

slide-9
SLIDE 9

Curr Curren ent measur asurem emen ents ts

slide-10
SLIDE 10

Curr Curren ent measur asurem emen ents ts

slide-11
SLIDE 11

Concl Conclusi sions

  • ns

Polyguard RD‐6 coating system does not shield CP current: ‐ Visual inspection: no corrosion after 3 months in comparison with non‐CP protected steel marker ‐ Quantities of current measured reaching the coupons located under intentionally disbonded RD‐6 ‐ High pH of 12 measured under intentionally disbonded RD‐6