As an important invention

reinforced soils have been using widely in retaining walls

dams

bridge works

slopes

etc. The rapid growth of reinforced soils has been pushing the development of reinforced materials

such as geotextile

geogrid

geocell and so on. These geotechnical materials have weak point: potential failure surface is liable to appear. In the past

clay and sand were used as stuffing

their strengths are stable and less affected by the time. The lime-soils strength has much to do with the time

if it is used as filling material

is it suitable? In this paper

an experiment program is carried out to study the strength and deformation of lime-soil reinforced with polypropylene fiber inclusions. Three percentages of polypropylene fiber contents

i.e. 0.05%

0.15% and 0.25% by weight of lime-soil are randomly included into the one-nine

two-eight and three-seven lime-soils. Based on triaxial compression tests

the influences of different reinforced rates

different lime contents

different curing ages and different confining pressures

are studied. From the results of tests

it is shown that the peak deviator stress and shear strength at failure increased at different ranges compared to the conventional lime-soil.