What is the primary purpose of pressure grouting in building foundation treatment work?
Improving soil strength and reducing water penetration below foundation structures
The question asks about the primary purpose of pressure grouting in building foundation treatment work. Let's explore this by understanding what pressure grouting is and its purposes.
Pressure Grouting: Pressure grouting, also known as injection grouting, involves injecting a grout material under pressure into cavities or voids to fill them and solidify the surrounding soil or structure. This technique is widely used in foundation work, tunneling, and other civil engineering applications.
Main Purposes of Pressure Grouting:
- Improving Soil Strength: One of the primary uses of pressure grouting is to enhance the structural integrity and load-bearing capacity of the soil. By filling voids and compacting the soil, the density and strength of the foundation are increased, providing better support for structures.
- Reducing Water Penetration: Grouting fills cracks and voids, which helps in preventing water seepage into the foundation. This is crucial for the stability and longevity of structures, especially in areas with high water tables or prone to flooding.
Given these explanations, the correct answer is:
Improving soil strength and reducing water penetration below foundation structures
Let's now evaluate the incorrect options:
- Supporting internal wall finishes against mechanical damage: This is not related to pressure grouting, which is primarily concerned with foundational strength and waterproofing.
- Applying protective surface coating for appearance improvement: Surface coatings are cosmetic treatments, while pressure grouting addresses structural issues.
- Increasing thermal insulation performance: While insulation is important, pressure grouting is unrelated to thermal performance. It focuses on structural integrity and moisture control.
In summary, pressure grouting is mainly used for strengthening soil and reducing water ingress in foundation structures, making option one the correct choice.
Similar Questions
Which method is primarily used to fill cracks, voids, and fissures in loose gravels and rocky strata?
According to IS 1892:2021, for a compact building site of about 0.4 hectare area, what is the recommended minimum number and location of boreholes or test pits for soil investigation?
Important Questions from Site Investigation and Sub-Soil Exploration
In order to minimize sampling disturbance the area ratio A r,\(\left( {{{\rm{A}}_{\rm{r}}} = \frac{{{\rm{D}}_{\rm{e}}^2 - {\rm{D}}_{\rm{i}}^2}}{{{\rm{D}}_{\rm{i}}^2}}{\rm{\;}}} \right)\) should be
Shelby tube is one of the most widely used devices for:
Which one of the following is NOT a soil exploration technique?
If the sampler tube is pushed at the bottom of the bore hole to a distance of 585 mm with length of the sample recovered being 535 mm. Then the value of recovery ratio is ______.
If the inside diameters of the cutting edge and sample tube are 68 mm & 70 mm respectively and 76 mm & 74 mm are the outside diameters of the cutting edge and sample tube respectively, then outside clearance of the sampler is _______.
