# US 7,744,691 B2 · Energy conserving pozzolan compositions and cements incorporating same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 7,744,691 B2 - Document ID: US7744691B2 - Status: Granted - Kind: B2 - Application number: 12/100,885 - Filed: 2008-04-10 - Published: 2008-10-16 - Granted: 2010-06-29 - Earliest claimed: 2007-04-10 - Assignees: Calcium Silicate Corp., Inc. - Inventors: Mark C. Elizer; Ronald W. Reed - Web page: https://patentgrep.com/patent/US7744691B2 ## CPC - C04B 40/0039: {Premixtures of ingredients} - C04B 28/02: containing hydraulic cements other than calcium sulfates - C04B 2103/0088: {Compounds chosen for their latent hydraulic characteristics, e.g. pozzuolanes} - C04B: LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE {(roofing granules E04D7/005)}; CERAMICS (devitrified glass-ceramics C03C10/00); REFRACTORIES; TREATMENT OF NATURAL STONE ## Abstract Pozzolan compositions incorporate glassy, amorphous particulates derived from byproducts of processes in which substantial energy was invested in generating those byproducts, at least one of which comprises amorphous calcium silicate slag generated as a byproduct of phosphorous production. The calcium silicate particulate is blended with one or more additional pozzolans, preferably one or more particulates of a material selected from the group consisting of fused silica of the type generated as a byproduct of making refractory grade fused silica and cullet glass of the type rejected from glass making processes. Pozzolanic cements incorporating up to about 50% by weight of such pozzolan compositions are also disclosed. ## Claims ### Claim 1 A pozzolanic composition, comprising: a blend of an amorphous calcium silicate particulate and at least one of (i) a cullet glass particulate and, (ii) a fused silica particulate, said particulates incorporated in said blend being present in effective proportions and having particles of sizes and surface areas effective to enable said blend to exhibit pozzolanic reactivity when mixed with a hydrated portland cement. ### Claim 2 (depends on 1) A pozzolanic composition as claimed in claim 1, wherein said calcium silicate particulate comprises particles derived from amorphous calcium silicate generated as a byproduct of the production of phosphorous. ### Claim 3 (depends on 1) A pozzolanic composition as claimed in claim 1, wherein said cutlet glass comprises particles derived from cullet glass generated as a byproduct of the production of a glass material. ### Claim 4 (depends on 1) A pozzolanic composition as claimed in claim 1, wherein said fused silica comprises particles derived from waste generated from the production of a refractory grade fused silica. ### Claim 5 (depends on 1) A pozzolanic composition as claimed in claim 1, wherein said calcium silicate particulate comprises about 35% to about 98% by weight of said blend. ### Claim 6 (depends on 1) A pozzolanic composition as claimed in claim 1, wherein said fused silica particulate does not exceed about 48% by weight of said blend. ### Claim 7 (depends on 1) A pozzolanic composition as claimed in claim 1, wherein said cullet glass does not exceed about 25% by weight of said blend. ### Claim 8 (depends on 1) A pozzolanic composition as claimed in claim 1, wherein said blend comprises both said cullet glass particulate and said fused silica particulate and wherein the total weight percentage of said blend which is represented by said cullet glass particulate and said fused silica particulate collectively does not exceed about 65%. ### Claim 9 A pozzolanic cement mix, comprising: (a) a portland cement, and (b) a pozzolanic composition in admixture with said portland cement, said pozzolanic composition being a composition which includes amorphous calcium silicate particulate and at least one of (i) a cullet glass particulate and, (ii) a fused silica particulate, said particulates incorporated in said blend being present in effective proportions and having particles of sizes and surface areas effective to enable said blend to exhibit pozzolanic reactivity when mixed with a hydrated portland cement. ### Claim 10 (depends on 9) A pozzolanic cement mix as claimed in claim 9 wherein said calcium silicate particulate comprises particles derived from amorphous calcium silicate generated as a byproduct of the production of phosphorous. ### Claim 11 (depends on 9) A pozzolanic cement mix as claimed in claim 9, wherein said cullet glass comprises particles derived from cutlet glass generated as a byproduct of the production of a glass material. ### Claim 12 (depends on 9) A pozzolanic cement mix as claimed in claim 9, wherein said fused silica comprises particles derived from waste generated from the production of a refractory grade fused silica. ### Claim 13 (depends on 9) A pozzolanic cement mix as claimed in claim 9, wherein said calcium silicate particulate comprises about 35% to about 98% by weight of said pozzolanic composition. ### Claim 14 (depends on 9) A pozzolanic cement mix as claimed in claim 9, wherein said fused silica particulate does not exceed about 48% by weight of said pozzolanic composition. ### Claim 15 (depends on 9) A pozzolanic cement mix as claimed in claim 9, wherein said cutlet glass does not exceed about 25% by weight of said pozzolanic composition. ### Claim 16 (depends on 9) A pozzolanic cement mix as claimed in claim 9, wherein said blend comprises both said cutlet glass particulate and said fused silica particulate and wherein the total weight percentage of said pozzolanic composition which is represented by said cullet glass particulate and said fused silica particulate collectively does not exceed about 65%. ### Claim 17 (depends on 9) A pozzolanic cement mix as claimed in claim 9 wherein said admixture is comprised of up to about 50% by weight of said pozzolanic composition.