Fundamentals of Geotechnical Engineering and

Laboratory Data Analysis

21-25 December 2015

Department of Civil and Environmental Engineering

Faculty of Engineering, Mahidol University

Dr. Pongpipat Anantanasakul

Soil Compaction

General principles

Standard proctor test

Standard proctor test

Typical results of Standard Proctor test

Factors affecting compaction

Soil type

Factors affecting compaction

Soil type

Factors affecting compaction

Compaction effort

Standard versus Modified Proctor test

Example

Example

Structure of compacted clay soil

Effect of compaction of cohesive soil properties

Permeability

Effect of compaction of cohesive soil properties

Stress-strain and strength

Field compaction

Type equation here.

Compaction equipment summary

Factors affecting field compaction

Number of roller passes

Factors affecting field compaction

Compaction of a soil using different methods

Type equation here.

Specifications for field compaction

Most economical compaction condition

Determination of field unit weight of compaction

Sand cone method

Example

Example

Determination of field unit weight of compaction

Rubber balloon and nuclear gauge method