EXPERIMENTAL INVESTIGATION ON STEEL FIBRE REINFORCED CONCRETE USING MAGNETIC AND NORMAL WATER

The Most Important Challenge for Concrete technologists is to improve the properties of concrete. In the last two decades, In Russia and China, a new technology, called Magnetic water technology, has been used in the concrete industry. In this technology, by passing water through a magnetic field, some of its physical properties change and, as a result of such changes, the number of molecules in the water cluster decrease from 13 to 5 or 6, which causes a decrease in the water surface tension. Using magnetized water in concrete mixtures causes an improvement in the workability and strength of concrete.Magnetic treatment of water increases the ion solubility in the water, and pH. Magnetic treatment changes the mode of calcium carbonate precipitation such that circular disc- shaped particles are formed rather than the dendritic (branching or tree-like) particles observed in non treated water. This technique is mostly used for the softening of water and, for the first time in this research, it has been used by the scientists for the production of concrete. Some researchers hypothesize that magnetic treatment affects the nature of hydrogen bonds between water molecules. Concrete made with magnetic water has higher slump values. Also in some cases, the compressive strength of the magnetic concrete samples was higher than that of the control concrete samples. The cement content can be reduced by 28% in the case of magnetic concrete.