By Patrick Losey / May 29, 2025 PMP Spec Concrete Mix 4500 PSI PMP® Spec Concrete Mix 4500 PSI is a high strength concrete mix ideal for both structural and non-structural applications over 2 inch (50 mm) thick.USES:Foundation wallsSidewalksFootingsPatiosStepsDriveways PMP Spec Concrete Mix 4500 PSI90 lb. PMP Spec Concrete Mix 4500 PSI60 lb. ADDITIONAL RESOURCES Data Sheets PMP Spec Concrete Mix 4500 PSISDS for Concrete Mixes <<< Return to Products PMP Fence Post Concrete Mix