Role of Gypsum Content on the Long-Term Performance of Lime-Stabilised Soil

Mansour Ebailila, John Kinuthia, Jonathan Oti

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

    Crynodeb

    The role of gypsum level on the long-term strength and expansion of soil stabilised with different lime contents is not well understood. This research, therefore, studied the effect of varying gypsum concentrations of 0, 3, 6, and 9 wt% (equivalent to the sulfate contents of 0, 1.4, 2.8, and 4.2%, respectively) on the performance of sulfate soil stabilised with two lime levels (4 and 6 wt%). This was carried out to establish the threshold level of gypsum/lime (G/L) at which the increase in G/L ratio does not affect the performance of lime-stabilised sulfate soil. Both unconfined compressive strength (UCS) and expansion, along with the derivative thermogravimetric (DTG) analysis, were adopted to accomplish the present objective. Accordingly, the result indicated that the strength and expansion were proportional to the lime and sulfate content, of which a G/L ratio of 1.5 was the optimum case scenario for UCS, and at the same time, the worst-case scenario for expansion. This discovery is vital, as it is anticipated to serve as a benchmark for future research related to the design of effective binders for suppressing the sulfate-induced expansion in lime-stabilised gypseous soil.
    Iaith wreiddiolSaesneg
    Rhif yr erthygl5099
    Tudalennau (o-i)1-14
    Nifer y tudalennau14
    CyfnodolynMaterials
    Cyfrol15
    Dynodwyr Gwrthrych Digidol (DOIs)
    StatwsCyhoeddwyd - 22 Gorff 2022

    Ôl bys

    Gweld gwybodaeth am bynciau ymchwil 'Role of Gypsum Content on the Long-Term Performance of Lime-Stabilised Soil'. Gyda’i gilydd, maen nhw’n ffurfio ôl bys unigryw.

    Dyfynnu hyn