Performance of Geopolymer Concrete in Aggressive Environment

The consumption of cement had caused pollution to the atmosphere. The cement industry is responsible for significant CO2 emissions because of its production. The carbon dioxide gas production is based from the process of burning large quantities of fuel and inherent to the basic process of calcinations of limestone. The process of making Portland Cement basically produce a large amount of CO2 emissions and other greenhouse gases

Effects Of Heating Rates And SBE Loading On Sintered Properties Of Spent Bleach Earth/Recycled Glass Composite

The purpose of this study is to investigate the influence of different heating rates on the properties of glass ceramic composite (GCC) at different spent bleach earth (SBE) loadings. GCC was prepared using SBE and recycled soda lime silicate (SLS) glass. The particle size of SLS glass was approximately <45μm. The GCC was formed by uniaxial dry pressing at weight fractions of SBE loading of 40 wt. %, 45 wt. %, and 55 wt. %. The GCC was then sintered at different heating rates of 2 ºC/min, 4 ˚C/min, 6 ºC/min and 8 ˚C/min at 700 ºC of sintering temperature. The GCC specimens were analysed in terms of their physical properties, while crystalline phase and microstructure were characterized using X-Ray diffraction and scanning electron microscope (SEM), respectively. The results from X-Ray diffraction pattern showed that quartz and wollastonite phases were formed with no major changes on the phases as the heating rate increased. The results indicate that the variation of heating with 2 ºC/min interval does not give a remarkable result of physical properties on GCC. High loading of SBE sintered at 2 ºC/min of heating rate produced low water absorption, density and porosity. SEM analysis showed that the physical properties and crystalline phases were correlated to the SBE loading and changes in the heating rate. The study concluded with the prospect of continuing the work of optimisation on schedule heat treatment at sintering temperature regimes

Design and Development of Green Eco-House

As humanity craves progression, there is an increase in the number of buildings being constructed on a global scale; this in turn leads to an increase in energy consumption to satisfy the development process which leads to more tons of greenhouse emissions can be released to accommodate the energy demand. Due to this there is increase in energy demand; the world has to face the fact that our resources will soon be depleted. This project aim is to construct a prototype of an eco-friendly house which is constructed and powered with minimal CO2 emissions which replacing cement in construction. The main focus on reducing the production of CO2 is by utilizing an innovative material known as geo-polymer cement and the usage of a solar panel to power the prototype fully using a clean and renewable energy source. This will in turn reduce our dependency on fossil fuels. Fly ash is created as a byproduct of the combustion of coal in power plants and it is usually disposed however it can be fully utilized by recycling it