As slabs shrink due to cooling and drying, shrinkage or tensile stresses start building and cracks form at contraction joints because the concrete is weaker or thinner at these locations.

When control joints meet curving form lines the joint should meet ... frost heaving due to lack of water drainage under slabs, the resulting concrete stresses can cause cracks.

The main structure on a 107-acre site is being assembled now, slab by precast slab ... the robustness of the precast concrete material being used to create the forms. “We are not using wood.

Wet concrete on skin can cause everything from mild redness to third-degree, permanently disfiguring chemical burns. You and your helpers should take these steps: Wear eye protection. Sandy ...