The record of 16,208.6m³ was achieved during the pouring of the foundation for the 335m-tall Wilshire Grand Center in Los Angeles.
The concrete pour took 18 hours, used 208 individual trucks delivering concrete from eight concrete production centres and involved 19 separate pumps feeding 13 hoses into the fill site.
Headwaters Incorporated supplied fly ash to achieve a 25% Portland cement substitution rate for the pour. The 1,800t of fly ash supplied to concrete producer California Portland Concrete for use in the Wilshire Grand foundation originated at power plants in Utah and Arizona.
“This high profile project comes on the heels of the US Environmental Protection Agency once again affirming its support for using fly ash in concrete,” said Bill Gehrmann, president of Headwaters Resources. “EPA recently released a rigorous study that showed fly ash use in concrete is completely safe and the agency reiterated its belief that fly ash concrete offers significant opportunities to advance sustainability.”
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