Question-Answer:

Which one of the following is an advantage when geo-textiles is used in road works?

• (a) Prior stripping of the natural soil 
• (b) Economy of aggregate 
• (c) Increase of different settings 
• (d) Slower consolidation of fills

Ans. (b)
The most frequent role of geotextiles is road construction is as a separator between the subgrade and subbase. This prevents the subgrade material from intruding into sub-base due to repeated traffic loading. The savings in sub-base materials, which would otherwise be lost due to mixing with the subgrade.

Question-Answer civil engineering study