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Title: Effects of Delay Time on Compaction and Strength Properties of Stabilized Granular Soil
Authors: Manikanta Kumar, B Siva
Singh, Suresh Prasad
Sreenivasulu, Chadarangam
Keywords: Soil stabilization
Delay time
Compaction Characteristics
Strength properties
Issue Date: Dec-2019
Citation: Indian Geotechnical Conference on Geotechnics for Infrastructure Development & UrbaniSation (IGC-GeoINDUS), Surat, India, 18 December 2019
Abstract: Weak and marginal soils are conventionally stabilized with chemical stabilizers like lime and cement. During construction of stabilized soil structures sometimes inevitable delays occurs between mixing the additive with the soil and compaction, which have adverse effect on the geoengineering properties of the stabilized structures. The present study emphases on the effects of delay time on compaction and strength properties of a granular soil stabilized with three different stabilizers i.e. lime, cement and slag based geopolymers. The granular soil is mixed with 2.5, 5, 7.5, 10, and 15% of lime and cement and 5,10,15% of slag based geopolymer by dry weight of the soil. The optimum moisture contents (OMC) and maximum dry densities (MDD) of these mixes were determined after delay periods of 0, 3, 6, 12, 24, 48, 72, 168 hours. As well, cylindrical specimens of size 36mm diameter and 72mm lengths were prepared for all these mixes compacted to MDD at OMC taking into the effects of delay. These specimens were cured at an average temperature of 300 C for 0, 7, and 28 days in closed secure environment for assuring the prevention of moisture loss while curing, after that the unconfined compressive strength (UCS) were determined. It is observed that from the test results the OMC and MDD of mixes are effected by the delay time and it is more understandable for cement and geopolymer binders than the lime. Similarly, delay time effects the strength of cement and geopolymer stabilized mixes more adversely than lime stabilized mixes
Description: Copyright belongs to proceeding publisher
Appears in Collections:Conference Papers

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