Improving The Strength Characteristics Of Red Clay Soil Using Waste Plastic Strips

Soil stabilization is the physical and chemical alteration of soils to enhance their physicalrnproperties. Stabilization can increase the shear strength of a soil and control the shrink-swellrnproperties of a soil, thus improving the load-bearing capacity of a sub-grade to supportrnpavements and foundations. Stabilization can be used to treat a wide range of sub-gradernmaterials from expansive clays to granular materials. The cost of introducing traditionallyrnavailable stabilizers has increased in recent years which opened the door widely for therndevelopment of other kinds of soil stabilizers such as plastics, bamboo etc. rnThe research is basically conducted by waste plastic strip and red clay soil found in KecheneRasrnDestarnroad.rnThernsignificancernofrnthernstudyrnisrntornprovidernalternativernstabilizationrnmaterialrninrnrnconstructionrnindustry.rnThernobjectivernofrnthisrnstudyrnisrntornimprovernthernstrengthrncharacteristicsrnofrnsoilrnrnusing thernstabilizationrnofrnplasticrnstrips.rnrnIn this regard an attempt has been made to evaluate the effect of plastic strip as a stabilizer onrnthe geotechnical properties of red clay soil in stabilized form mainly strength and compactionrncharacteristics. The preliminary investigation of the soil to be stabilized shows that it belongs tornA-7-5 class of soil in the AASHTO soil classification system. Soils under this class are generallyrnof poor engineering use. Therefore, series of laboratory tests such as Atterberg limits, free swellrnindex, compaction, UCS and soaked and unsoaked CBR tests for different percentages of plasticrnwere performed. The soil was stabilized with plastic in stepped concentration of 0%, 0.5%, 1.5%,rn2.5%, 3.5%, 5%, and 7.5% by dry weight of the soil. rnThe analysis shows slight improvement on the geotechnical properties of plastic stabilized soil.rnThe plastic strip is found to increase the unconfined compressive strength of the soil up to 5% ofrnplastic (75.01 kPa to 196.14 kPa) and CBR result of the red clay soil up to 2.5% (soaked CBRrnfrom 3.5% to 5% and unsoaked CBR from 80.3% to 108.7%). Due to plastic’s light weightrnproperty the MDD of the soil shows slight increase up to 2.5% of plastic from 1.4g/cm3 to 1.53rng/cm3, and as the ratio of the plastic increased in the clay soil the result decreases.

Get Full Work

Report copyright infringement or plagiarism