Mitigating Settlement of Structures founded on Peat

Soft Soil Engineering International Conference 2015

Wijeyesekera, D.C.^1,2 ; Numbikannu, L.^1,2 ; Ismail, T.N.H.T.^1,2 ; Bakar, I.^1,2

Research Center for Soft Soil, Universiti Tun Hussein Onn Malaysia, Batu Pahat Johor

86400, Malaysia^1

Faculty of Civil and Environmental Engineering, Universiti Tun Hussein Onn Malaysia, Batu Pahat Johor

86400, Malaysia^2

关键词: cellular mat;    Critical evaluation;    Expanded polystyrene;    Feasible alternatives;    Lightweight technology;    Research objectives;    Settlement mitigation;    Soft soils;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/136/1/012042/pdf
DOI  :  10.1088/1757-899X/136/1/012042

来源: IOP

【 摘 要 】

Observations made of two common failures of structures founded on peat/organic soil in Johor, Malaysia is presented. Critical evaluation of current lightweight fill technology to mitigate such settlement is also discussed. Lightweight technology, such as Expanded Polystyrene (EPS), has been used in construction on soft yielding ground for decades. Regrettably, some published information of EPS failures to perform on construction sites are also cited in this paper. This paper outlines some concepts leading to the development of an alternative innovative lightweight fill is that the idealised cellular structure of the GCM permit free flow of water and complemented by the mat structure which evens out any differential settlement A further highlight of this paper is the monitoring of the field performance of this lightweight fill (GCM) as a feasible alternative to fill weight reduction on yielding ground.. Hence, a prime research objective was to compare the fill settlements observed with 1m high fill of surcharge loading on peat ground (comparison of the case of using a partial 0.6m high GCM and that of a total of 1m of conventional sand backfill).