IMPROVEMENT OF BEARING CAPACITY OF SANDY SOIL BY GROUTING

IMPROVEMENT OF BEARING CAPACITY OF SANDY SOIL BY GROUTING

INTRODUCTION TO CHAPTER ONE

Structures built on shaky ground frequently necessitate soil improvement to maintain the safety and stability of neighboring structures. Vibro-floatation, compaction piles and explosive compaction, excavation and replacement, grouting, and other technologies can be used to enhance the ground in granular soils. The most appropriate approach is determined by a number of parameters, including soil conditions, required degree of compaction, types of structures to be supported, as well as site-specific concerns such as available time for project completion, availability of equipment and materials, and so on. Soil compaction can provide efficient solutions to a wide range of foundation problems, and it is particularly good for minimizing total settlement in sand. Sandy soil has soil particles that are larger than 2mm in diameter. It drains well and has a low nutrient retention capacity. Sandy soil does not retain moisture well. It is granular and composed of very minute rock and mineral particles. The texture is gritty as a result of the dissolution and weathering of rocks like limestone, granite, quartz, and shale. It is also easier to farm if it is rich in organic elements, but this allows for greater drainage than is necessary. In the summer, this causes over-drainage and dehydration of the plant. It warms very quickly in the spring. Grouting, on the other hand, is a process in which stabilizers are injected into the subsurface soil in the form of a suspension or solution. Sandy soil is the biggest particle in the soil and feels abrasive when rubbed. This is due to its rough edges and inability to store many nutrients.

1.1 GROUTING’S HISTORICAL BACKGROUND

Many prominent researchers, design engineers, and design contractors have contributed to the development and history of compaction grouting during the previous 30-40 years. Many scientific publications dealing physically with the challenges of compaction grouting design have been published, such as “compaction grouting, 1973” and “planning and performing compaction grouting” 1974. These and other essential references provide the main stream of knowledge for compaction grouting, a highly specialized engineering and construction procedure. The compaction grout method has numerous distinguishing characteristics that provide distinct advantages over other remedial geotechnical building methods. Growth is the only viable solution in many cases. Some of the benefits are as follows: Economic: Many times, compaction grouting is the only viable solution to foundation settling concerns, as opposed to removing the structure and rebuilding with costly deep foundation techniques. Minimal disruption: Destructure may be occupied and in use during the grouting operation. Minimal risk: When re-leveling a structure, compaction grouting poses a low risk of catastrophic structural failure. Other considerations include: minimal geotechnical exploration, increased structural support, cost considerations, and so forth.

1.2 PURPOSE AND OBJECTIVE

1. Determine the composition of the sandy soil particles.

2. To ascertain the degree of sandy soil compatibility.

3. Grouting will be used to improve sandy soil.

4. To compare the effectiveness of grouting systems, perform laboratory tests on sandy soil such as compaction test, California bearing ration (CBR) test, atterberg LIMIT test, liquid limit test, plastic limit test, and sieve analysis test.

1.3 OBJECTIVES OF THE STUDY The purpose of this study is to increase the quality and bearing capacity of sandy soil using grouting.

1.4 RESTRICTIONS OF THE STUDY The following are the study’s limitations:

TIME FACTOR: Limited time prevents many practical tasks from being completed.

AREA OF investigation: The technical investigation of sandy soil qualities is the scope of this project.