The Relationship Between Consolidation And Swelling Characteristics Of Expansive Soils (Case Of Mojo Town)

Abstract

The swell characteristics of the soil are influenced by the variation in the values of initial moisture content, dry density, coefficient of consolidation and compression. The objective of this thesis is to identify the relationship between consolidation and swelling characteristics of expansive soils of mojo town. The one-dimensional consolidation test was conducted for disturbed and undisturbed soil sample with different initial dry density and moisture Content. The expansive soil samples were classified as A-7-5and A-7-6 as per classification AASHTO system and MH and CH according to USCS. The test results show that the initial dry density increases with increase in swelling pressure. The compression index CC, ranges from 0.397- 0.416 & the coefficient of consolidation Cv ranges from0.12-0.57 m2/year, while initial dry density & initial moisture content range of 1.057-1.126 g/cm3 & 45.66-49.66% respectively. The swelling potential and swelling pressure obtained from the test result are found to be 4.65%, 14.56% and 100kPa, 420kPa respectively. It was observed from the test results, those factors that affect the swelling characteristics of expansive soils have also affected the consolidation characteristics of the expansive soil.