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Uplift and settlement prediction model of marine clay soil e integrated with polyurethane foam

Lat, D. C. and Jais, I. B. M. and Ali, N. and Baharom, B. and Mohd. Yunus, N. Z. and Mat Yusof, D. A. (2019) Uplift and settlement prediction model of marine clay soil e integrated with polyurethane foam. Open Engineering, 9 (1). pp. 481-489. ISSN 2391-5439


Official URL: http://dx.doi.org/10.1515/eng-2019-0054


Polyurethane (PU) foam is a lightweight material that can be used efficiently as a ground improvement method in solving excessive and differential settlement of soil foundation mainly for infrastructures such as road, highway and parking spaces. The ground improvement method is done by excavation and removal of soft soil at shallow depth and replacement with lightweight PU foam slab. This study is done to simulate the model of marine clay soil integrated with polyurethane foam using finite element method (FEM) PLAXIS 2D for prediction of settlement behavior and uplift effect due to polyurethane foam mitigation method. Model of soft clay foundation stabilized with PU foam slab with variation in thickness and overburden loads were analyzed. Results from FEM exhibited the same trend as the results of the analytical method whereby PU foam has successfully reduced the amount of settlement significantly. With the increase in PU foam thickness, the settlement is reduced, nonetheless the uplift pressure starts to increase beyond the line of effective thickness. PU foam design chart has been produced for practical application in order to adopt the effective thickness of PU foam within tolerable settlement value and uplift pressure with respect to different overburden loads for ground improvement works.

Item Type:Article
Uncontrolled Keywords:Settlement, Uplift
Subjects:T Technology > TA Engineering (General). Civil engineering (General)
Divisions:Civil Engineering
ID Code:88502
Deposited By: Widya Wahid
Deposited On:15 Dec 2020 08:19
Last Modified:15 Dec 2020 08:19

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