EXPERIMENTAL METHODS
•Crush real concrete sewer pipe into smaller pieces.
•Wet cut concrete cylinders with hole drill and saw.
•Pre-weigh and measure dimensions of concrete samples.
•Measure corrosion liquid media at end of 10 days.
(Biomass, sulfate, calcium,
total organic carbon)
•Post-test liquid media to determine type of bacteria still alive.
•Re-weigh and measure dimensions of concrete after drying.
•Repeat cycle.
23 concrete specimens tested:
Batch 1:
3 cycles: pH Effect
Batch 2:
2 cycles: Temperature &
Sulfur
Concentration Effects
Batch 3:
1 cycle: Duplicates &
“NO CONCRETE”
CONTROL
Concrete after
drilled and cut.
Concrete specimens
are 4-5 cm
long and 2.6 cm in
diameter.
Concrete
before drilled and cut.