Experimental Studies On Durability of Magnetic Water Concrete

Water is the most studied material on the earth, Water (H2O) is often perceived to be ordinary as it is transparent and treated to be homogenous consisting of just two hydrogen atoms attached to a single oxygen atom. But at nano level water is not homogeneous, exists as clusters of molecules depending on the temperature, pressure and forces existing. These clusters of molecules are held by hydrogen bond and vanderwaal's forces. When water is exposed to the magnetic or electric fields these clusters break down which has found to change certain properties of water. These anomalous properties of water are unique for water and may result in many variations of macroscopic properties. As water structure is altered, by which specific surface area of water increases for hydration of cement particles and no extra water is available for the formation of undesirable capillary cavities. So by altering the structure of water, Water is more efficiently used in concrete which improves strength and durability properties of concrete. The present research work is carried out to investigate the effect of Magnetic Water on the Durability of magnetic water concrete (M30 grade and M40 grade). Effect of magnetic water on acid immersion and freezing & thawing of magnetic water concrete are studied. The investigation is carried out to study the durability aspect (% of weight loss & % strength loss) of MWC When cubes of M30 grade and M40 grade are immersed in Hydrochloric acid (HCL) (5%, 10% & 15%) and subsequent comparing with the corresponding properties of NWC. Also the experimental study of MWC specimens subjected to different cycles of freeze-thaw was reported. After 28 days of curing, the specimens were surface dried and then they were kept in freezer at -140C for 24 hours. After 24 hours of freezing, the specimens were taken out and kept in open atmosphere for 24 hours. This completes one cycle of freezing and thawing. The influences of freeze-thaw cycles on the mechanical properties the compressive strength, weight were measured after 0, 3, 6, 9, 12 and 15 cycles of freeze-thaw. It is observed that, in most cases, concrete made with magnetic water has superior durability than those of normal water concrete although there is no significant difference in its composition.