Setting Standards for Pozzolan and Alkali-Activated Cements

As a number of our recent postings have documented (see herehere, here, and here), there has been a good deal of attention paid to pozzolans (both natural and artificial) as well as alkali-activated cement products.  As a number of companies are exploring technologies for utilizing these products, a big hurdle to wide-spread acceptance in the current market is the lack of recognized standards on these types of cements.

Today brings news that ASTM is working in proposed standards for compressive strength in alkali-activated cements (with attention paid to fly ash) as well as raw and calcined pozzolans.  While those involved in previous efforts to develop new cement standards know that this is a very long process, this does represent an important first step towards greater acceptance of these product.

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  1. Calcined Clay as a Green Cement Component « Bridge Gap Engineering

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