Lab 6 - Unconfined Compression Test

FAKULTI KEJURUTERAAN AWAM UNIVERSITI TEKNOLOGI MARA PASIR GUDANG

LABORATORY MANUAL

COURSE

BASIC SOIL MECHANICS

COURSE CODE

ECG303

LEVEL OF OPENNESS

2

CATEGORY

PARTIALLY OPEN ENDED

DEGREE OF OPEN-ENDED (%)

66

PERIOD OF ACTIVITY

1 WEEK (WEEK 5)

TITLE

Unconfined Compression Test(UCT) 1.1 Introduction Level 2 laboratory activities refer to the condition where only the problem is guided and given. Students are required to find the ways & means and provide the answers to the given assignment using the group creativity and innovativeness. The activity will enable the students to appreciate independent learning and prepare them for a much harder task of open ended laboratory activities.

PREAMBLE

In this laboratory activity, the students need to know shear strength of a soil.It is maximum resistance to shearing stresses. It is usually considered to be equal to the shear stress at failure on the failure plane. The shear strength of soil mainly consists of the resistance due to interlocking of particle and friction between individual particles at their contact point i.e. internal friction and the resistance due to inter particle forces which tend to hold the particles together in a soil mass, what so called cohesion. 1.2 Objectives To determine the undrained shear strength parameters of soil using unconfined compression test. 1.3 Learning Outcomes At the end of the laboratory activities, students would be able to: 1. Acquire the necessary skill in conducting test using appropriate tools for unconfined compression test. 2. Determination and analyses shear strength parameters from the test. 3. Work in a group to produce the relevant technical report.

2 Problem Statement PROBLEM STATEMENT

UCT is a special case of triaxial compression, carried out at zero cell pressure. Since only one Mohr circle can be drawn, the test is only applicable to fully saturated non-fissured clays, and only the undrained strength can be measured. As a group, you are required to investigate the shear strength parameters of a given soil sample.

©FKA, UiTM PASIR GUDANG

Dis- March 2015

FAKULTI KEJURUTERAAN AWAM UNIVERSITI TEKNOLOGI MARA PASIR GUDANG

LABORATORY MANUAL

3.1 Apparatus The group must identify the availability of the chosen apparatus in the lab before the right procedures can be identified. 3.2

Procedures The group is required to search for the relevant procedure to carry out the test based on the available apparatus in your laboratory. The document must be made ready for verification by the instructor during the laboratory activity.

WAYS & MEANS

3.3

Data Acquisition

All data collected and observed during the test must be tabulated in proper format for easy verification and presentation of the technical report. 4 Results, Analysis and Conclusion RESULTS

The group is required to submit the technical report of the laboratory results highlighting the apparatus used, the procedures undertaken for the test, data acquisition process, analysis carried out and the relevancy of the set-out output to address the given problem. The report must be submitted 7 days after the completion of the test.

©FKA, UiTM PASIR GUDANG

Dis- March 2015

FAKULTI KEJURUTERAAN AWAM UNIVERSITI TEKNOLOGI MARA PASIR GUDANG

©FKA, UiTM PASIR GUDANG

LABORATORY MANUAL

Dis- March 2015