At 4 °C the Set Took Forty Minutes: Cold-Weather Gel Behaviour
Set time can quadruple between 20 °C and 4 °C. Four winter fixes that work, the overdose trap that hides free liquid, and how to test at field temperature.
Frozen Solidified Cake Overnight: Breakout, Re-Handling and Acceptance
A transfer station in Alberta loaded a 20 m³ skip with solidified leachate at 15:40 on a Tuesday in January. Overnight the temperature fell to -19 °C. By Wednesday morning the surface carried a 40 mm ice crust, and when the loader broke the mass apart roughly 60 litres of amber liquid ran across the…
Cold Snap Solidification: What Freezes First and What to Do About It
The first hard frost of the year usually arrives overnight, and the first failure the next morning is not chemical. It is a 25 mm suction hose with a slug of frozen gel in it, and a crew standing around a pump that is running but moving nothing. What Freezes First In order: the lance tip, the suctio…
