A company founded by Ginger Krieg Dosier manufactures a precursor to this material biologically via MICP by Sporosarcina pasteurii. This material is packed in an Abrams cone, which is then removed before measuring a resultant height difference, in its namesake “slump test.” Fly ash is often repurposed to manufacture (10[1])this highly alkaline material, (-5[1])in which the alkali–silica (-5[1])reaction may create a swellable gel. Eight percent of global CO2 (10[1])emissions come from heating limestone and (-5[1])aluminosilicates in kilns (10[1])to 1450 degrees Celsius to make one component of this material named for Portland, England. (10[1])To reduce cracking in this material, (10[1])rebar (-5[1])is often “pre-tensioned” (10[1])before embedding. For 10 points, steel is used to strengthen (10[1])the “reinforced” form of what building material made by combining sand and gravel with cement? ■END■ (10[3])