What is the approximate ratio of the weight loss rate in the close and damp condition compared to the water-immersed conditions?

Conditions

• The ratio refers to the weight loss rate metric.
• The comparison is made against both permanently soaked in water and wet-and-dry-alternately environments.

Reasoning, step by step

1. Locate the quantitative claim on the experimental result slide.
2. Extract the approximate ratio stated for the close and damp condition.

Example

The slide text states: "The weight loss rate of the anchor steel in close and damp condition is only about $1/5$ of the anchor steel in the condition of permanently soaked in water condition and wet and dry alternately condition."

Common misconceptions

• Treating the $1/5$ ratio as an exact mathematical constant rather than an approximate experimental observation.
• Assuming the ratio applies to all environments equally.

Watch the explanation

Explore next

• Why is the close and damp condition considered the least corrosive?
• How does the weight loss rate change over time in all environments?