Enviro-Holland has renowned durability of interlocking paving stones, yet offers the old world charm with a new age technology. Interlock Paving Systems, Inc. has developed a Holland PICP (Permeable Interlocking Concrete Paver) Stone that will help manage and control stormwater runoff.
“No slump” concrete mix under extreme pressure and high frequency vibrations. Minimum compressive strength of 8,000 psi. Maximum water absorption of 5%. Meets or exceeds ASTM C-936