Author Traces Rediscovery of Great Pyramid-Era Binder

A new book describes a silicate rock, made without heat or pressure, as a potential aggregate-binding substitute for portland cement in a range of building and infrastructure concrete conditions. The Great Pyramid Secret: Egypt’s Amazing Lost Mystery Science Returns claims the artificial rock, when mixed with aggregates, “forms concrete that has fooled geologists,” and concludes that the silicate compound represents “an ancient lost art rediscovered by modern science.”

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Roanoke Cement commended for safety, air quality

State and county officials on behalf of the North Carolina Department of Labor and County of Forsyth, respectively, honored Roanoke Cement Co.’s Winston-Salem terminal for outstanding safety and air-quality compliance. Roanoke Cement Co. is a subsidiary of Titan America LLC.

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Iceland engineers confirm volcanic ash’s binding, AAR-quelling properties

The International Centre of Research and Applied Technology for Alkali Aggregate Reactions has confirmed AAR-mitigating potential in ash from April’s Eyjafjallajökull volcano eruption, crediting the material’s particle fineness and approximately 60% silicon dioxide content. Using methods from ASTM C 1260 Multi-Laboratory Study of the Accelerated Mortar Bar Test for Alkali-Silica Reaction, staff at the Mannvit Engineering-housed facility prepared specimens from control (100% portland cement) and ash (5% portland cement substitution) mixes. After the bars’ 14-day exposure in a NaOH solution, Centre founder Børge Johannes Wigum (This email address is being protected from spambots. You need JavaScript enabled to view it.) observed dramatically lower AAR expansion in the ash (0.02%) versus the control (0.45%) specimens.

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