Oedometer: Soil Mechanics and Consolidation
TEST TO EXAMINE THE PROPERTIES AND THE RATE OF SETTLEMENT OF PURE KAOLINITE CLAY BY USING OEDOMETER IN
1-DIMENSIONAL CONSOLIDATION
Abstract
The aim of this experiment was to explain how to use two type of oedometer to calculate compression index (Cc) and re-compression index (Cr), measuring the pre-consilidation (s’vc), and to predict the coefficient of consolidation (Cv). The soil used in this experiment is Kaolinite clay, which has Cv = 8.69 sqm/year at 300 kPa (hydraulic result) and Cv = 2.98 sqm/year at 288 kPa (manual result).
This result then would be compare with some theoretical calculation by using the isochorne plot.
Introduction
Oedometer test is test to present and measure the consolidation of a soil. Consolidation is a process when an external load is given at the top of a saturated soil which will cause the water to be squeezed from the soil and finally will lead to the settlement process. This long process is not as simple as it looks, however it may take several years for the soil until the final settlement is reached. In this case oedometer will be used to stimulate the real consolidation situation process of the site. This report will explain how oedometer works, how to process oedometer result for further calculation, and explain the difference between two types of oedometer that are operated in the experiment.
Experiment Description
Two type of oedometer were used in this experiment. They were manual oedometer and hydraulic oedometer. The sample that was used was Kalinite clay. A 34.2 mm diameter of ring was used to put the sample during the experiment. Each experiment was done separately because all the method and the technique were different.
Manual Oedometer
Two sets of data were collected at the same time. The first data were obtained by applying pressure to compact the clay. This was done by added or removed a load every 25 minutes and measure the gauge depth from the dial gauge. The compaction and the
1-DIMENSIONAL CONSOLIDATION
Abstract
The aim of this experiment was to explain how to use two type of oedometer to calculate compression index (Cc) and re-compression index (Cr), measuring the pre-consilidation (s’vc), and to predict the coefficient of consolidation (Cv). The soil used in this experiment is Kaolinite clay, which has Cv = 8.69 sqm/year at 300 kPa (hydraulic result) and Cv = 2.98 sqm/year at 288 kPa (manual result).
This result then would be compare with some theoretical calculation by using the isochorne plot.
Introduction
Oedometer test is test to present and measure the consolidation of a soil. Consolidation is a process when an external load is given at the top of a saturated soil which will cause the water to be squeezed from the soil and finally will lead to the settlement process. This long process is not as simple as it looks, however it may take several years for the soil until the final settlement is reached. In this case oedometer will be used to stimulate the real consolidation situation process of the site. This report will explain how oedometer works, how to process oedometer result for further calculation, and explain the difference between two types of oedometer that are operated in the experiment.
Experiment Description
Two type of oedometer were used in this experiment. They were manual oedometer and hydraulic oedometer. The sample that was used was Kalinite clay. A 34.2 mm diameter of ring was used to put the sample during the experiment. Each experiment was done separately because all the method and the technique were different.
Manual Oedometer
Two sets of data were collected at the same time. The first data were obtained by applying pressure to compact the clay. This was done by added or removed a load every 25 minutes and measure the gauge depth from the dial gauge. The compaction and the