In general, solid waste materials if accumulated are of potential negative impact to the environment although it has sometimes an economic value if it is recycled. Among these solid waste materials one can mention, the exhausted plastic bottles of Polyethylene Terephthalate (PET) chemical composition. The increase in the consumption of these bottles has been occurred dramatically. Therefore, recycling of PET as aggregates in concrete is one of the important topics of interest to researchers in last decades. The aim of the present work is to make a comparative study on the effect of adding two kinds of PET as replacement of fine aggregates, with different percentages, on concrete properties. To achieve the goal of this research, seven mixtures have been investigated. In addition to plain concrete, two forms of PET have been used with 5%, 10% and 15% percentages as partial replacement of sand. The result obtained showed that, using PET stripes (PETS) is helpful for some mechanical and physical properties of concrete and suitable for sound absorbent concrete. While, using PET pellets (PETP) in concrete, is found better for erosion resistance against sulfuric acid solution.
This study aims to draw a broader understanding on the conceptions of compliance from the perspectives of Siemens. Interpretative Phenomenological Analysis was adopted to enhance the comprehension of what concepts the employees in a particular environment do have about their control environment that makes them act the way they do. Unstructured interviews were conducted with four professionals of Siemens involved in compliance and internal controls selected purposefully. Based on the study, we infer that the meaning individual takes on for compliance in this environment constitutes as it affects groups i) Compliance as a value generator; ii) Compliance in the context of its operating structure and broad-based practice; and as it affects the individuals iii) Adherence to rules and ethical conduct; and iv) Effective compliance. Finally, one can also infer that the lived experience of organizational compliance goes far beyond the compliance program per se and encompasses the company’s culture.