Technical evaluation of the WVU-OCR process for producing flyash-based structural materials. Report 40

Conference · Wed Jan 01 04:00:00 EST 1969

OSTI ID:5231839

Cockrell, C F; Shafer, Jr, H E

In 1963 the Coal Research Bureau of West Virginia University, under contract to the Office of Coal Research, U.S. Dept. of Interior, developed a process to produce brick and other structural materials from flyash. Generally, the process involves blending about 74 percent flyash, 23 percent coal ash slag or other coarse aggregate, 3 percent dry sodium silicate and about 4-10 percent water. The blend is thoroughly mixed and then formed into brick shapes at pressures ranging from 1000-5000 psi. The newly formed brick are dried and then fired to temperatures that range from 1975/sup 0/F to 2100/sup 0/F with a total cycle time amounting to about 30 hours. The finished product compares in many aspects to conventional brick in such areas as strength, color range and water adsorption; however the most important attribute is the fact that the flyash brick are generally about 20 to 30 percent lighter in weight. After about four years of laboratory study, the WVU-OCR process has now reached the pilot plant stage and large-scale production testing using commercial equipment has been under way for about a year.

• Research Organization: West Virginia Univ., Morgantown (USA). Coal Research Bureau
• OSTI ID: 5231839
• Report Number(s): CONF-690502-4
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010800* -- Coal
Lignite
& Peat-- Waste Management
AEROSOL WASTES
ALKALI METAL COMPOUNDS
BINDERS
BRICKS
BUILDING MATERIALS
DENSITY
FLY ASH
MANUFACTURING
MATERIALS
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
PRODUCTION
SILICATES
SILICON COMPOUNDS
SLAGS
SODIUM COMPOUNDS
SODIUM SILICATES
SPECIFICATIONS
WASTE PRODUCT UTILIZATION
WASTES