Journal of Civil Engineering Research 2015, 5(2): 39-44 DOI: 10.5923/j.jce.20150502.04 The Study of Mixture Design for Foam Bitumen and the Polymeric and Oil Materials Function in Loose Soils Consolidation Kaveh Ostad-Ali-Askari 1,* , Mohammad Shayannejad 2 1 PhD Student, Department of Water Engineering, Faculty of Civil Engineering, Najafabad Branch, Islamic Azad University, Najafabad, Iran 2 Associate Professor, Water Engineering Department, Isfahan University of Technology, Isfahan, Iran Abstract Due to the enormous growth of new chemicals, especially polymer materials in construction projects, and the importance and effectiveness of these new materials in poor soil stabilization, recently has closed chemistry and polymer sciences to civil science. The use of materials such as bitumen in stabilization of flowing and loose soil and using of polymer resins reflects the effect of these substances is very high on construction projects. Considering the importance of oil and polymer materials in soil stabilization, in this study performance of polymer materials and their comparison have been investigated. Oil materials such as bitumen can be used to stabilize the soil, and polymer resins such as polyvinyl alcohol and polyvinyl acetate, and also pointed polypropylene synthetic fiber can be considered as polymer materials. Bitumen foam is one of the fixative materials that obtain by adding water to hot bitumen, and is applicable to a wide range of stone materials. In addition to, polymer resins increase the burden go loose soils. Polymer fibers due to high durability and easy application and no problem at saturation conditions are highly regarded by civil engineers. Keywords Soil stabilization, Bitumen, New chemical materials, Polymer resins 1. Introduction Use of materials such as bitumen in stabilization of flowing and loose soil and using polymer resins reflects the importance of these substances on construction projects. Each pavement rehabilitation require a certain time period that best rehabilitation method chooses according to the road conditions. One method for rehabilitation is implementation of coating. The main problem is limitation of high quality materials and asphalt factories, which lead to increase costs of transportation of materials to the project site. Nowadays, advancement of technology in cold recycling machines minimizes these problems. Foam bitumen produces by adding a small amount of water (2-3% by weight of bitumen) to hot bitumen (160-180 o C). After injection of water to hot bitumen, the water evaporates suddenly and leads to explosive bitumen foaming in the saturate stream. 2. Material and Methods * Corresponding author: Ostadaliaskarik@pci.iaun.ac.ir (Kaveh Ostad-Ali-Askari) Published online at http://journal.sapub.org/jce Copyright © 2015 Scientific & Academic Publishing. All Rights Reserved 2.1. Foam Bitumen Figure 1 shows internal system of cold recycling machine. In this figure the asphalt pavement has been destroyed and need cover that is fixed by foam bitumen. A protective asphalt layer with thickness of 3 cm places on the stabilized basis of foam bitumen. Thickness of asphalt layer depends on the volume of traffic passing. This reduces costs of material transportation [1]. The foam bitumen produces when small amount of water add to hot bitumen. After water injection into the hot bitumen (figure 2), bitumen is formed into steam that consists of thousands of tiny foam vapor, and bitumen easily coat around the cold aggregates and increases the adhesion between materials [2]. This method can simply be implemented in most Iran streets. Streets that need rehabilitation the overall improvement of streets that needs to be coated. Destroyed asphalt pavement turned into the foam bitumen with this method and a layer of protective asphalt adds to it. 2.2. Advantages of using Foam Bitumen Easy to use: similar to the bitumen emulsion, Foam bitumen can be used to stabilization of recycled materials by attachment of bitumen reservoir and foam chamber to recycler machine [1].