investigation on the corrosion of metal reinforcement in clay brick masonry
TRANSCRIPT
Corrosion of metal reinforcement in Clay
Brick MasonryWong Hsui Han
Scope of presentation•Introduction•Methodology•Results•Discussion
Scope of presentation•Introduction•Methodology•Results•Discussion
Factors affecting corrosion•Oxygen + Water•Humidity•Temperature•Wind•Wall section•Level of building
Impact of humidity on corrosion(1)
TUUTTI, K., 1982, PG 85
Impact of temperature on corrosion (1)
TUUTTI, K., 1982, PG 85
Impact of wind on corrosion (2)
Layout of wall section
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Scope of presentation•Introduction•Methodology•Results•Discussion
Sites where samples were taken from
Analysing the crack…
Removing samples from the wall…
Marking the samples
Measuring the corrosion depth
Measuring the corrosion depth
Scope of presentation•Introduction•Methodology•Results•Discussion
Results with hand held tools
North versus South facing
Caliper versus Photography
Scope of presentation•Introduction•Methodology•Results•Discussion
Impact of factors on corrosion•Oxygen + Water•Humidity•Temperature•Wind•Wall section•Level of building
Error in measuring corrosion depth
Impact of pitting on the measurement?
Impact of color and shadow on the measurement
Metal reinforcement with or without mortar?
Summary•Many factors affect corrosion depth•External more at risk than internal•Reinforcement in the middle of the building more at risk•Wind direction impacts
Thank you
Results with digital photography
Reference• 1 2