12 Questions
What is a common use of jet grouting?
To underpin foundations such as quay walls and heavy structures
What is a desirable property of grout?
Correct setting time
What factor affects the rate of injection of grout?
All of the above
What is the maximum grouting pressure to avoid disturbing soil particles?
20kN/m2
What is the purpose of knowing the grain size distribution of soil?
To show the relationship between grout particle size and void dimensions
What type of soil is often treated with displacement grouting?
All of the above
What is the primary purpose of permeation grouting?
To create a cemented mass in coarse, granular soils
What is the common use of displacement – soil fracture grouting in tunneling?
To stabilize overlying structures
What is the characteristic of the grout used in displacement – compaction grouting?
Low slump, mortar grout
What happens when the grout pressure is greater than the tensile strength of soil or rock in displacement grouting?
The lenses compact surrounding soil and lift the overlying soil and structures
What is the result of permeation grouting in coarse, granular soils?
The creation of a cemented mass
What is the primary difference between displacement – soil fracture grouting and displacement – compaction grouting?
The purpose of the grouting technique
Test your knowledge of grouting techniques, including permeation grouting and displacement-soil fracture grouting, used to stabilize and strengthen soils and create barriers to groundwater flow.
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