Ground Improvement Quiz

The main objectives of ground improvement is to:

• Improve Bearing capacity

• Increase permeability

• Reduce settlement

• Increase water content

Which property is generally improved by ground densification?

• Fertility

• Shear strength

• Plasticity index

• Grain size

Problematic soils include all except:

• Expansive clays

• Collapsible soils

• Clean dense sand

• Organic/peaty soils

Expansive soils undergo volume change due to:

• Temperature

• Moisture variation

• Pressure

• Sand content

Which soil is most prone to sudden settlement on wetting?

• Collapsible soil

• Expansive clay

• Marine clay

• Dense sand

Karst deposits are problematic due to:

• High organic matter

• Sinkholes and voids

• High swelling

• Liquefaction

Which method is best for improving liquefiable sands?

• Preloading

• Vibro-compaction

• Lime piles

• Soil replacement

Selection of suitable ground improvement depends mainly on:

• Color of soil

• Soil type and conditions

• Type of plant nearby

• Surface vegetation

An emerging trend in ground improvement is:

• Stone age hammering

• Jet grouting

• Manual digging

• Only chemical stabilization

Microbial-induced calcite precipitation (MICP) improves soil by:

• Removing voids

• Cementing particles with calcium carbonate

• Adding moisture

• Reducing particle size