Compositions and methods for making blended supplementary cementitious materials

A method of manufacturing a blended supplementary cementitious material (SCM) comprising:

• intergrinding an SCM with a non-lime-bearing material to form an interground particulate blend,
• wherein the SCM is selected from the group consisting of calcined clay, metakaolin, fly ash, bottom ash, shale dust, metallurgical slags, and waste glass;
• and
• wherein the non-lime-bearing material is selected from the group consisting of limestone that has not been calcined to form calcium oxide (CaO), fine aggregate, sand, basalt, sinters, ceramics, recycled bricks, recycled concrete, and refractory materials.

A blended supplementary cementitious material (SCM) formed by intergrinding:

• an SCM selected from the group consisting of calcined clay, metakaolin, volcanic ash, tuff, trass, pumice, perlite, fly ash, bottom ash, shale dust, metallurgical slags, and waste glass;
• and
• a non-lime-bearing material selected from the group consisting of limestone that has not been calcined to form calcium oxide (CaO), fine aggregate, sand, basalt, sinters, ceramics, recycled bricks, recycled concrete, and refractory materials,
• the blended SCM further comprising one or more additives selected from the group consisting of calcium chloride (CaCl2)), calcium nitrite (Ca(NO2)2, calcium nitrate (Ca(NO3)2, alkali metal salts, sodium hydroxide (NaOH), sodium citrate, and alkali metal salts of a weak acid.

A blended supplementary cementitious material (SCM) formed by intergrinding:

• an SCM selected from the group consisting of calcined clay, metakaolin, volcanic ash, tuff, trass, pumice, perlite, fly ash, bottom ash, shale dust, metallurgical slags, and waste glass;
• and
• a non-lime-bearing material selected from the group consisting of limestone that has not been calcined to form calcium oxide (CaO), fine aggregate, sand, basalt, sinters, ceramics, recycled bricks, recycled concrete, and refractory materials,
• wherein the SCM has an initial particle size of less than 1 mm prior to being interground with the non-lime-bearing material, and wherein the non-lime-bearing material has an initial particle size of at least 1 mm prior to being interground with the SCM.

A blended supplementary cementitious material (SCM) formed by intergrinding:

• an SCM selected from the group consisting of calcined clay, metakaolin, volcanic ash, tuff, trass, pumice, perlite, fly ash, bottom ash, shale dust, metallurgical slags, and waste glass;
• and
• a non-lime-bearing material selected from the group consisting of limestone that has not been calcined to form calcium oxide (CaO), fine aggregate, sand, basalt, sinters, ceramics, recycled bricks, recycled concrete, and refractory materials,
• wherein the blended SCM is characterized by having a d90 equal to or less than about 45 μm, a d50 equal to or less than about 18 μm, and a d10 equal to or less than about 5 μm.