Rebuilt on Instagram: "Ever wondered why ice is mixed into concrete on some construction sites? 🧊 When cement reacts with water, it produces heat (called the heat of hydration). In hot weather or large concrete pours, this heat can raise the mix temperature too much, making the concrete set too quickly, lose workability, and even develop cracks. By replacing part of the mixing water with ice, the temperature is kept under control. As the ice melts, it cools the mix, slows down the setting proce