In this study four main variables have been considered to find the relationship between the strength as a dependent variable and the lime content, curing temperature and curing period as independent variables. Lime contents of 0%, 3%, 5%, 7% and 9% and curing temperature of 5°C, 15°C, 30°C, 40°C, 50°C and curing periods of 2 hours, 7, 14, 28 and 90 days were chosen. Unconfined Compressive Strength (UCS) test was conducted to evaluate the strength of lime treated soil. Curing temperature has more pronounced effect on strength of lime treated soils. The experimental results indicate that, for the range of temperatures considered in the study, the strength gain depends on the lime content. Higher the lime content better is the strength gain. There are three phases in the relationship between strength and lime content, first phase for lime content less than Initial Consumption of Lime (ICL), second phase for lime content above ICL but less than Optimum Lime Content (OLC) and third phase, lime content above the OLC. The OLC depends upon the curing temperature and it increases with increase in the curing temperature. A relationship between strength of lime treated soil and curing period is established through multi-linear regression technique.

In this study the effect of initial moisture content on the strength of thermally cured lime treated expansive soil is examined. The soil of CH type was selected and stabilized with 5% and 7% lime. The effect of placement water content is brought out by conducting UCC tests on lime stabilized samples compacted at OMC of 5% lime (26%) and other two water contents representing wet of OMC (30%) and dry of OMC (21%). The samples thus prepared are cured for 7, 14 and 28 days at temperatures of 5°C, 30°C, and 50°C. The strength of wet side compacted sample is almost equal to the strength of sample compacted at OMC irrespective temperature of curing, curing period and lime content though it has 4% higher moisture content. Further, the rate of strength gain is higher for higher temperature but this effect is a function of initial moisture content and is pronounced much in sample moisture contents of OMC and wet side OMC. To derive maximum benefit from lime stabilization of expansive clay, the sample should be compacted at OMC or slightly higher than OMC and cured at elevated temperatures.

Anchor-type foundations are one of the foundation types used in structures subject to tensile forces. These anchors are generally designed according to the weight of the soil on them depending on the depth they are buried at and the frictional resistance obtained from the failure surfaces during failure. One method of increasing the uplift capacity of the foundation without increasing the burial depth is the use of geogrid material. In this study, the uplift capacities of strip anchor plates at different embedment depths were investigated by considering the geogrid effect placed in different combinations. The aim of the study is to investigate whether a more economical solution can be obtained by using geogrid without increasing the embedment depth of the anchor plate. Experiments were carried out using centrifugal experimental setup, which gives values closer to the real results. The tests were performed on sand of two different densities for anchor burial depths H/B = 2 and H/B = 5. According to the results, the uplift capacity is significantly improved when geogrid is used. As the reinforcement configuration, the use of a single geogrid layer placed just above the anchor plate with an inclination angle of 45 degrees gave more effective results than using the geogrid horizontally and vertically. In the study, up to 98% increases in uplift capacity were obtained with reinforcement. In addition, the prototype model was analyzed with a numerical program based on the finite element method, and the results were compared with the experimental results. As a result of the comparison, it was observed that the experimental and numerical results were compatible with each other. Suggestions for practice are presented using the results obtained.