| Bibliographic Citation | |
| Full Text |  1 Mb |
|---|---|
| DOI | 10.2172/249035 |
| Title | Production of cements from Illinois coal ash. Technical report, September 1, 1995--November 30, 1995 |
| Creator/Author | Wagner, J.C. [Institute of Gas Technology, Chicago, IL (United States)] ; Bhatty, J.I. ; Mishulovich, A. [Construction Technology Labs., Inc., Washington, DC (United States)] |
| Publication Date | 1995 Dec 31 |
| OSTI Identifier | OSTI ID: 249035; Legacy ID: DE96011747 |
| Report Number(s) | DOE/PC/92521--T278 |
| DOE Contract Number | FC22-92PC92521 |
| DOI | 10.2172/249035 |
| Other Number(s) | Other: ON: DE96011747 |
| Resource Type | Technical Report |
| Resource Relation | Other Information: PBD: [1995] |
| Research Org | Illinois Dept. of Commerce and Community Affairs, Springfield, IL (United States) |
| Sponsoring Org | USDOE, Washington, DC (United States) |
| Subject | 01 COAL, LIGNITE, AND PEAT;32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; COAL; COMBUSTION PRODUCTS; WASTE PRODUCT UTILIZATION; FLY ASH; CEMENTS; COMPRESSION STRENGTH; PROGRESS REPORT; EXPERIMENTAL DATA |
| Description/Abstract | The objective of this program is to convert Illinois coal combustion residues, such as fly ash, bottom ash, and boiler slag, into novel cementitious materials for use in the construction industry. Currently only about 30% of the 5 million tons of these coal combustion residues generated in Illinois each year are utilized, mainly as aggregate. These residues are composed largely Of SiO{sub 2}, Al{sub 2}O{sub 3}, Fe{sub 2}O{sub 3}, MgO, and CaO, which are also the major components of cement. The process being developed in this program will use the residues directly in the manufacture of cement products. Therefore, a much larger amount of residues can be utilized. To achieve the above objective, in the first phase (current year) samples of coal combustion residues will be blended and mixed, as needed, with a lime or cement kiln dust (CKD) to adjust the CaO composition. Six mixtures will be melted in a laboratory-scale furnace at CTL. The resulting products will then be tested for cementitious properties. Two preliminary blends have been tested. One blend used fly ash with limestone, while the other used fly ash with CKD. Each blend was melted and then quenched, and the resulting product samples were ground to a specific surface area similar to portland cement. Cementitious properties of these product samples were evaluated by compression testing of 1-inch cube specimens. The specimens were formed out of cement paste where a certain percentage of the cement paste is displaced by one of the sample products. The specimens were cured for 24 hours at 55{degrees}C and 100% relative humidity. The specimens made with the product samples obtained 84 and 89% of the strength of a pure portland cement control cube. For comparison, similar (pozzolanic) materials in standard concrete practice are required to have a compressive strength of at least 75% of that of the control. |
| Country of Publication | United States |
| Language | English |
| Format | Medium: P; Size: 18 p. |
| Availability | OSTI as DE96011747 To purchase this media from NTIS, click here |
| System Entry Date | 2008 Feb 04 |
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Last Updated: 03/16/2009