Review on carbonation concrete for GGBS & SF by Taguchi method
摘要
Carbon sequestration is one of the methods for decreasing the rate of carbon dioxide in the environment. There are various types of carbon sequestration techniques. One such technique is carbon sequestration by carbonating concrete in the initial stages, particularly the first 28 days. At this time, the carbon particles react with the calcium hydroxide particles in cement and form calcium carbonate, which enhances the strength and permeability of concrete. This review focuses on the inclusion of alternative sustainable materials in carbonation concrete, predicting the strength and permeability characteristics of the concrete through statistical approaches. At first, the source materials implemented in carbonation concrete are studied, and the factors influencing carbonation in concrete are analysed. The carbonation techniques by neural networks are compared from previous studies along with Design of Experiments (DoE), in which the Taguchi statistical technique possesses better prediction of strength and permeability characteristics in concrete. Implementing the factors of carbonation concrete in the orthogonal array in the Taguchi method can provide better outcomes than the other DoE methods. In the end, the carbonation concrete is compared with the concrete made with polypropylene, recycled aggregates, and sustainable materials like seashell, fly ash and so on. In which the carbonation concrete has a medium level of strength in flexure and compression, with depth of carbonation.