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.

Does concrete corrode plastic?

Unlike metal pipes, plastics are not affected by cement, limes, mortars, concrete and general corrosion. ... They consist of a flexible plastic pipe run inside a slightly larger conduit pipe.

Can you put concrete around PVC?

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.