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 (10[1])is often repurposed to manufacture this highly alkaline material, in which the alkali–silica reaction may create a swellable (10[1])gel. (10[1])Eight percent of global CO2 emissions come from heating limestone and aluminosilicates in kilns (10[1])to 1450 degrees Celsius (-5[1])to make one component of this material named for Portland, England. (10[1])To reduce cracking in this (10[1])material, rebar is (10[1])often “pre-tensioned” before embedding. For 10 points, steel is used to strengthen the “reinforced” form of what building material made by combining sand and gravel with cement? ■END■ (10[1])