Study on the preparation and properties of high titanium slag aggregate concrete using magnetized water

To improve the workability and mechanical properties of high titanium slag aggregate concrete, this paper proposed the use of magnetized water for its preparation. The study investigated the effects of different flow rates of magnetized water on the workability and mechanical properties of high titanium slag aggregate concrete, and conducted tests and analyses on its micro morphology and pore structure. The results show that magnetized water enhances the workability and strength of high titanium slag aggregate concrete and increases its air content. However, as the flow rate of magnetized water increases, the improvement effect diminishes. When the water flow rate is 40 mL/s, the slump, spread, 28 d compressive strength, and 60 d compressive strength are respectively increased by 9.5%, 14.9%, 8.9%, and 11.6% compared with tap water high titanium slag aggregate concrete. The microstructural test results indicate that the cracks between the aggregate and cement matrix of the magnetized water high titanium slag aggregate concrete are smaller, with more hydration products and fewer unhydrated cement and mineral admixtures, resulting in a higher degree of reaction. The "pinning effect" between the high titanium slag aggregate and the cement matrix is further enhanced. Additionally, the proportion of harmless pores is higher, and the proportion of harmful pores is lower, making the structure denser and thus stronger.