Porous solid drainage material with particulate phase bound by hybrid opc-geopolymer phase

A porous solid surface-water drainage material comprising:

• a first phase comprising a recycled particulate mixture bound with a second phase of cementitious binder, the first phase selected from the group consisting of recycled waste concrete aggregates, recycled waste glass, recycled waste plastic, recycled tire rubber crumbs, and mixtures thereof;
• the second phase of cementitious binder comprising a hybrid OPC-geopolymer binder phase of Ordinary Portland Cement (OPC) and a geopolymer-forming material selected from granulated ground blast furnace slag (GGBS), fly ash, metakaolin, or mixtures thereof, the OPC portion creating calcium silicate hydrate bonds for binding to the first phase recycled particulate mixture to strengthen the porous solid surface-water drainage material, and the geopolymer forming a secondary rapid-hardening portion of the second phase of cementitious binder, reacting in part with calcium hydroxide produced from OPC hydration to create calcium-alumino-silicate hydrate, wherein the ratio of OPC to geopolymer in the second phase of cementitious binder being 3 to 1 or higher;
• wherein the first phase ranges from approximately 70 to approximately 80 weight percent of the material and the second phase ranges from approximately 15 to approximately 25 weight percent of the material;
• the porous solid surface-water drainage material having a porosity of 10-25 volume percent, a water filtration rate of at least 18,000 mm/hr, a 28-day compressive strength of at least 10 MPa, and a density of less than 1,850 kg/m3.