Natural Pozzolan10 Jul 2020 15:18
A bit bored so thought I might have a quick scan of Pozzolan News. Quite a lot going on and the demise of Fly Ash is definitely taking hold. CR Minerals are tripling production at their Colorado site. They are getting their patents sorted too.
Pumice Manufacturer to Invest $11 Million in Colorado Plant Expansion.
Charah Solutions has been steadily building up its fly ash distribution business in recent years with an eye on the supplementary cementitious materials (SCM) market. This week it opened the third of its new series of SCM grinding plants, at Oxnard in California, US.
https://www.globalcement.com/news/item/9497-natural-pozzolan-use-in-the-us
The Canadians are cranking it up too!. (bottom link)
https://www.thomasnet.com/insights/pumice-manufacturer-to-invest-11-million-in-colorado-plant-expansion/
Pozzolanic compositions containing fly ash and remediation agents for use in cementitious materials
Patent No. 10689292
Inventor(s): Jeffrey Alexander Whidden (Brentwood, MO), Joseph Earl Thomas (Malad City, ID), Richard Douglas Carter (Macon, GA)
Assignee(s): CR Minerals Company, LLC (Fort Worth)
Law Firm: O”Connor Company (no location found)
Application No., Date, Speed: 16011856 on 06/19/2018 (735 days app to issue)
Abstract: It has been unexpectedly discovered that the addition of a natural or other pozzolan to non-spec fly ash significantly improves the properties of the non-spec fly ash to the extent it can be certified under ASTM C618 and AASHTO 295, as either a Class F or Class C fly ash. The natural pozzolan may be a volcanic ejecta, such as pumice or perlite. Other pozzolans may also be used for this beneficiation process. Many pozzolans are experimentally tested and may be used to beneficiate non-spec fly ash into certifiable Class F fly ash. Additionally, this disclosure provides a method of converting a Class C fly ash to a more valuable Class F fly ash. This discovery will extend diminishing Class F fly ash supplies and turn non-spec fly ash waste streams into valuable, certified fly ash pozzolan which will protect and enhance concrete, mortars and grouts.
Progressive Planet excited about pozzolan assets as firm aims for 'significant' expansion this year
https://www.proactiveinvestors.com/companies/news/917888/progressive-planet-excited-about-pozzolan-assets-as-firm-aims-for--significant--expansion-this-year-917888.html