Pour the mixed concrete around the PVC pipe, using a large, metal funnel or a spade. Pack the concrete around the PVC pipe to prevent air gaps. … Pack the layer directly underneath the PVC pipe; it should be packed tight to create a solid, firm foundation and to prevent cracking during temperature fluctuations.
Subsequently, can you pour concrete over copper pipes?
The copper tube must be completely embedded in the concrete and adequate provision for thermal expansion should be provided where the tube enters/exits the concrete. … According to the Portland Cement Association the interaction of copper with both dry and wet concrete should not cause a corrosion concern.
Beside this, does concrete eat PVC? A. According to Bernard Erlin, the principal chemicals in concrete that could conceivably attack plastics are calcium hydroxide, sodium hydroxide and potassium hydroxide. Erlin cites a table from Handbook of Chemistry and Physics stating that rigid PVC has excellent resistance to strong alkalies.