Author/Authors :
Shojaei Baghini, Mojtaba Universiti Kebangsaan Malaysia - Faculty of Engineering and Built Environment, Sustainable Urban Transport Research Centre (SUTRA) - Department of Civil and Structural Engineering, Malaysia , Ismail, Amiruddin Universiti Kebangsaan Malaysia - Faculty of Engineering and Built Environment, Sustainable Urban Transport Research Centre (SUTRA) - Department of Civil and Structural Engineering, Malaysia , Kheradmand, Behnam Universiti Putra Malaysia - Department of Civil Engineering, Malaysia , Hafezi, Mohamad Hesam Universiti Kebangsaan Malaysia - Faculty of Engineering and Built Environment, Sustainable Urban Transport Research Centre (SUTRA) - Department of Civil and Structural Engineering, Malaysia , Almansob, Ramez Alezzi Universiti Kebangsaan Malaysia - Faculty of Engineering and Built Environment, Sustainable Urban Transport Research Centre (SUTRA) - Department of Civil and Structural Engineering, Malaysia
Abstract :
Recycled road based material requires a stabilizing effect in order to provide a longer life to pavements. This is done by improving its strength and reduces its water vulnerability. One of the most popular techniques to achieve this is by using soil stabilization. This research aims to analyze in details the soil stabilization method which utilizes Portland cement and bitumen emulsion in improving soil properties. As a result, this will increase the pavement bearing capacity (conducted via laboratory research). The combination of Portland cement and bitumen emulsion are beneficial for the purpose of increasing the stiffness and also the elasticity of soil stabilized layer. In order to examine this, two steps were undertaken, first, by examining the Unconfined Compressive Strength (UCS) and Modulus of Elasticity (ME) on samples mixed with soil aggregates comprising Portland cement and bitumen emulsion. Next, the data collated was analysed and the graph plots were presented as to show the optimum value of Portland cement and bitumen emulsion used in soil stabilization. The major findings of this research showed the importance of soil stabilization using Portland cement and bitumen in improving pavement’s performances by increasing bearing capacity of its layer. The findings revealed that overall; the optimum value of Portland cement and bitumen emulsion utilized in base Soil stabilization method is 3% and 3% respectively. With this method, the duration time of the project can be reduced and subsequently the project cost may be also reduced.
Keywords :
Soil stabilization , Portland cement , bitumen emulsion , pavement bearing capacity , unconfined compressive strength
