Plastic Composite Panel (PCP) is an innovation in the field of materials that uses recycling plastic waste to construct composite cement panels. This material innovation is one of the solutionto answer environmental problems caused by plastic waste. Some previous studies mostly used plastic waste for concrete aggregates. Thus, making this study different from previous studies. The purpose of this study is to make a prototype of a PCP that is environmentally friendly with panel dimensions sample of 100 x 30 x 10 mm thick. The method used is an experimental test using materials in the form of polyethylene terephtalate (PET) from used water bottle and cement waste as well as testing its physical and mechanical properties carried out in the laboratory. Variations in PET used for testing materials are 0- 20%. In addition to mechanical properties, specific gravity and porosity test is carried out. The best results shows that 5% PET addition to cement paste increase the flexutral strength to 4.47 MPa compared to control sample which has 3.26 MPa. Porosity test shows that addition of 10% PET reduce the density of PCP to 63.64% compared to control sample that has 44.44%.
One of the efforts to decrease environmental impact due to construction activities is by reducing Embodied Energy in design phase. In the design phase, EE can be associated with the usage of construction materials. On the other hand, the Building Information Modeling (BIM) can be an alternative approach in improving the effectiveness and efficiency material usage. The aim of this paper is to explain how to implement BIM in calculating and reducing the value of EE. The research methodology is a mix qualitative-quantitative method that conducted by using a case study and utilized BIM model of low-cost public apartment. The EE calculation is based on material properties of the BIM model and it also depends on the unit price analysis of each construction works. Furthermore, the Life Cycle Analysis (LCA) method is used to calculate the EE of materials properties value. In order to find the best EE reduction value, a comparison analysis is conducted that it compared the use of conventional materials (as alternative 1) and 2 types of substitution materials there are prefabricated wall panels and concrete masonry unit. Thus, the EE reduction value can be seen and the best low EE material will be used as a reference in the next phase of the construction process.
Disposable diaper waste is a crucial environmental problem today. Population growth is one of the triggers for increasing this type of waste. To overcome this, various studies on recycling diaper waste are a top priority. Some researchers recycle diaper waste as building components, especially concrete. The results of those studies have a positive impact on waste recycling innovation. In this paper, we will try to approach the formula for calculating the recycling of diapers as concrete. In addition, a simple simulation is used to determine the capacity of diaper waste that can be recycled as building material. The study revealed that parameters to calculate waste capacity for disposable diapers is age population of 0-4 years, frequency of changing diaper and mass of diaper. Thus, parameters to be considered for replacement of concrete component by waste materials, especially disposable diapers is density of materials, mass of materials and percentage of replacement Based on the calculation simulation results, the use of diaper waste as a concrete material for road pavement is better to reduce waste production capacity than for building components.
Urbanization is an undeniable phenomenon that happens globally, including in Indonesia. Indonesian cities are growing, causing urban sprawl and transformation of rural areas into urban areas. In between the urban and rural there is peri-urban area that has unique mixed characteristics of both. Areas with such characteristics can be found easily in the outskirts of Bandung city. The growth of peri-urban areas in Bandung occurs simultaneously with the growing tourism industries. This phenomenon caused a spatial transformation especially to the existing houses, which gives impacts to the livability of the area. This article would focus upon how housing transformation in peri-urban areas can affect the livability of the area by using the North Bandung peri-urban area as a case study. The result shows that the spatial transformation that happens in peri-urban areas gives positive impacts to social, economy, and spatial aspects, but unfortunately not the environmental aspects.
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