Non-hydraulically reactive particulate mineral compositions for reducing cement content in concrete

A dry blended particulate composition for use in making low carbon blended cement or low carbon concrete, consisting of:

• ground granulated blast furnace slag having a first D90;
• optionally at least one pozzolan selected from the group consisting of fly ash, finely ground bottom ash, finely ground steel slag, silica fume, metakaolin, volcanic ash, natural pozzolan, trass, calcined shale, calcined clay, ground glass, and combinations thereof;
• and
• a mineral filler component dry blended with the ground granulated blast furnace slag without intergrinding, the mineral filler component having a second D90 greater than the first D90,
• wherein the composition is free of Portland cement.

A non-hydraulically reactive blended particulate composition for use in making low carbon blended cement or low carbon concrete, comprising:

• a pozzolanic component having a first D90;
• and
• a mineral filler component dry blended with the pozzolanic component without intergrinding, the mineral filler component having a second D90 greater than the first D90,
• wherein the composition is free of hydraulic cement,
• wherein the pozzolanic component comprises at least two pozzolans interground together selected from the group consisting of fly ash, finely ground bottom ash, finely ground steel slag, silica fume, metakaolin, volcanic ash, natural pozzolan, trass, calcined shale, calcined clay, ground glass, and combinations thereof.