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Limestone Cited as Benefit to Green Concrete

By Mark S. Kuhar

Adding limestone powder to “green” concrete mixtures – those containing substantial amounts of fly ash, a byproduct of coal-burning power plants – can significantly improve performance, according to researchers from the national Institute for Standards and technology (NIST) and the Federal Highway Administration (FHWA).

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Aggregates Recycling Bill Offered in Canada

On Monday April 22, PC MPP Sylvia Jones (Dufferin-Caledon) introduced a private members bill, bill 56, entitled The Aggregate Recycling Promotion Act. The Bill seeks to promote greater sustainability in the construction industry by allowing for greater use of recycled aggregates in publicly-funded construction projects as a means to preserve this non-renewable resource where possible.

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