As a first step for the analyses of stabilized ground made by limi-treatment (Deep-Lime-Mixing Method), the fundamental properties of limi-treated soils were studied experimentally.
　Various factors that influence the lime reactivity determined from unconfined compression tests on several marine clays were examined. Date are presented to show the influence on lime reactivity for following fectors ; 1) lime content and curing time, 2) grain size distribution, 3) initial water content, 4) organic carbon and pH, 5) mixing condition, 6) curing temperature, and 7) quality of quick lime. The date show that each of the factors has a large effect on strength increase.
　Stress-strain curve from a number of unconfined compression tests were examined. εf, the strain at failure, is generally less than 2 to 3% and decreases with increasing strength. E50, the tangent modulus at stress level equal to one-half of the unconfined compressive strength, qu, increase with increaing strength. For qu less than 15kg/cm2, E50=(150～400)qu/2, and for qu greater than 15kg/cm2, E50=(500～1000)qu/2 are found.
　Regarding the consolidation characteristics, high pressure consolidation tests were performed on both treated and untreated, remolded soils. As the result of the tests, it is found that ; 1) consolidation yield stress, py, is proportional to qu : py=(1.2～1.3)qu, 2) at the stress level less than py, treated soils show the coefficient of consolidation, Cv, much greater and the coefficient of volume compressibility, mv, fairly smaller than those of untreated, remoled soils, 3) rough relationships are found between cv and mv of treated soils and those of untreated, remolded soils.