This usually happens due to delays, poor scheduling, or environmental factors like high temperatures. Visually, cold joints appear as seams or textural breaks. A cold joint in concrete construction is a plane of weakness that forms when new, wet concrete is poured against concrete that has already begun to harden. This discontinuity occurs because the older material has passed its initial setting time, preventing a true chemical bond with the fresh mix. This creates a seam that. These lines are called cold joints, and they can affect both strength and durability. What Are Cold Joints? Cold joints are weak planes that occur when one layer. Albeit the most famous one is probably honeycomb, normally associated with inadequate concrete vibration during the pouring process, cold joints are also very frequent on construction sites.
