The name change reflects the company's broader natural pozzolan
commitment and its expertise in driving the innovations needed to shape the future of natural pozzolans
as a geopolymer across a broad range of industry needs.
Following a long process of development and testing between the two firms, the ash that the filters from the central generating units Thermal Andina (CTA) and Thermal Power Hornitos (CTH) in Mejillones capture, is used to replace natural pozzolan
in Cementos Bio Bio's cement products.
Pozzolan materials such as ground granulated blast furnace slag (GGBS), fly ash (FA), silica fume (SF) and natural pozzolan
have been used successfully as substituting materials for Portland cement.
Examining prospects for increasing the volume of fly ash beyond the commonplace 15 to 20 percent range, NIST Technical Note 1812 points to shortfalls in the industry benchmark document for Class C and Class F product: ASTM C618-12, Standard Specification for Coal Fly Ash and Raw or Calcined Natural Pozzolan
for Use in Concrete.
Standard Specification for Coal Fly Ash and Raw or Calcined Natural Pozzolan
for Use as a Mineral Admixture in Portland cement Concrete, Annual Book of ASTM Standards, Ankara.
United States Antimony Corporation (OTCBB:UAMY) announced that its Bear River Zeolite Subsidiary is vigorously pursuing research on the application of its zeolite ("BRZ") as a natural pozzolan
(cementiceous product) for various large markets in the cement/concrete industry.
org and coincides with Geofortis's name change from Cal Minerals to Geofortis, reflecting the company's broader natural pozzolan
ASTM WK42602, Test Method for Compressive Strength of Alkali Activated Coal Fly Ash and Raw or Calcined Natural Pozzolan
Cement Mortars (Using 2-in.
The US Geological Survey and the US Bureau of mines, Bulletin 1707-C 1987, concludes the deposit as probably the only domestic source of natural Pozzolan
Other possible avenues opened up by these findings include the study of natural pozzolan
from different parts of the world and the utilization of waste products to produce green concrete.
3] of POFA can be lower than the minimum requirement for natural pozzolan
as specified in ASTM C618-08a (2008).
This type of pozzolanic cement is a combination of 85% OPC clinker and 15% natural pozzolan
(tuff) which consisted of the components reported in Table 1.