Launch old concrete road surface is it spread pitch layer is it reflect research of crack to prevent and cure to add, it is very necessary.

The foundations of low-rise residential Buildings are nearly all supported on spread footings, wide Bases (usually of concrete) that support walls or piers and distribute the load over a greater area.

This new kind of slope protection can avoid some defects of traditional concrete prefabricated components and is worth of being spread in grit slope protection.