Permeable paving slab and paver and manufacturing method therefor
AssigneePacific Interlock Pavingstone, Inc.
InventorsDean R. Tonder, Glen Tonder, Tim Donovan, Per Jensen
Life of this patent
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Abstract
A permeable paver and paving slab that have water permeability of on average about 1 inch per hour and compressive strength of an average of about 5000 psi to 8000 psi, the paver and paving slab manufactured by forming a mixture comprising blast-furnace slag, sand, gravel and Portland cement into predetermined sizes, shapes and colors as desired utilizing a hydraulic-type or equivalent compacting block forming machine.
Claims15
A permeable paving slab formed into a predetermined dimension and shape utilizing a hydraulic-type compacting block forming machine, the predetermined dimension of the permeable paving slab further defined as having an approximate minimum exposed face area in the range of 0.065 m2 and an approximate minimum thickness in the range of 60 mm, the permeable paving slab comprising (i) a base of 3 parts by weight of blast-furnace slag and 1 part by weight of sand, (ii) between about one fifth and one half part by weight of ¼″ gravel, (iii) between 15 and 21 parts by weight Portland cement, the permeable paving slab having a water permeability in excess of 1 inch per hour and having an average compressive strength in excess of about 5000 psi.
A method for producing a permeable paver utilizing supplemental cementitious materials (SCMs) recovered from CO2 flue gases, having a water permeability in excess of 1 inch per hour and having an average compressive strength in excess of about 8000 psi, the method comprising the steps of combining (i) a base of 3 parts by weight of blast-furnace slag and 1 part by weight of sand, (ii) between about one fifth and one half part by weight of ¼″ gravel, and (iii) between 15 and 21 parts by weight portland cement wherein up to 40% of the portland cement comprises SCMs formed by mineralization of CO2, and forming the paver into a predetermined size and shape utilizing a hydraulic-type compacting block forming machine.
A permeable paver formed into a predetermined size and shape utilizing a hydraulic-type compacting block forming machine, the permeable paver comprising (i) a base of 3 parts by weight of blast-furnace slag and 1 part by weight of sand, (ii) between about one fifth and one half part by weight of ¼″ gravel, (iii) between 15 and 21 parts by weight portland cement wherein between about 5 and 7 parts by weight of the portland cement are SCMs containing calcium carbonate formed by mineralization of CO2, the paver having a water permeability in excess of 1 inch per hour and having an average compressive strength in excess of about 8000 psi.
A method for reducing carbon emissions and producing a permeable paver having a water permeability in excess of 1 inch per hour and having an average compressive strength in excess of about 8000 psi, the method comprising the following steps:
- A. Forming supplemental cementitious materials (SCMs) comprising calcium carbonate recovered by mineralization of CO2;
- B. Combining (i) a base of 3 parts by weight of blast-furnace slag and 1 part by weight of sand, (ii) between about one fifth and one half part by weight of ¼″ gravel, and (iii) between 15 and 21 parts by weight portland cement wherein up to 40% of the portland cement comprises SCMs comprising calcium carbonate recovered by mineralization of CO2;
- and
- C. Forming the paver into a predetermined size and shape utilizing a hydraulic-type compacting block forming machine.
Dependencies are inferred from the claim text.