Azhani, Zukri (2023) Bearing capacity of footing on soft clay strengthened by lightweight expanded clay aggregate raft. Construction, 3 (1). pp. 6-14. ISSN 2785-8731. (Published)
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Abstract
This research represents an investigation into the effectiveness of replacement methods to increase the bearing capacity of soft clays under footing load, where Light Expanded Clay aggregates (LECA) were used as a substitute for common aggregate fillers. The soil replacement technique is the easiest and cheapest way to improve soft soil compared to installing a raft footing or using a deep foundation such as piles. LECA is known to be light, strong and environmentally sustainable and is widely used in Geotechnical applications where weight is an issue. The bearing capacity of the footing on soft soil reinforced by LECA was analysed through finite element analysis using commercial software PLAXIS 3D (2020). The soft ground is represented by Hardening Soil (HS) constitutive model, while LECA has been modelled as Mohr-Coulomb (MC). Parametric studies were conducted to assess the effect of LECA raft thickness to bearing capacity improvement for various friction angles of LECA. The research found that the bearing capacity is directly proportional to the internal friction angle of LECA and the LECA raft thickness. Nevertheless, the bearing capacity appears to be almost linear when 2.5 m and 3.5 m thick LECA rafts are used, indicating that the depth of replacement ratio more than 25% give insignificant effect towards improvement ratio.
| Item Type: | Article |
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| Uncontrolled Keywords: | Soft soil; Bearing capacity; Numerical modelling; Lightweight Expanded Clay Aggregate; Soil replacement |
| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) T Technology > TH Building construction |
| Faculty/Division: | Faculty of Civil Engineering Technology |
| Depositing User: | Mrs Norsaini Abdul Samat |
| Date Deposited: | 17 May 2023 01:41 |
| Last Modified: | 17 May 2023 01:41 |
| URI: | http://umpir.ump.edu.my/id/eprint/37629 |
| Download Statistic: | View Download Statistics |
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