Concrete cracks. The reasons for that are the stuff ... professional-grade sealant such as Sika's Sikaflex-1a. To do this, prepare the crack according to the manufacturer's instructions, then ...

Sika WT-240 P is a powdered, plant-added, crystalline-based, permeability-reducing admixture, for use in hydrostatic applications, (PRAH) that reduces the ability of concrete to conduct water flow.