What Are Supplementary Cementitious Materials?

About SCM

Supplementary cementing materials (SCMs) are materials added to the process of making concrete that make it more economical, enhance strength and durability and help reduce the overall C02 emissions of concrete.

 

SCMs Reduce Carbon Foot Print 

SCMs are used to substitute either portland cement clinker in the production of composite cements or cement in the production of concrete. The use of SCMs is widespread in the concrete industry because of the economic and performance benefits they provide. Recently, SCMs have been receiving increasing attention for the role they play in reducing the carbon footprint of concrete, since the energy use and CO2 emissions from portland cement clinker manufacturing significantly outweigh those of other concrete components, and SCMs have a smaller environmental impact than portland cement clinker [1]. The demand for high quality SCMs is large, as exemplified by the fact that the world average clinker factor (percentage of clinker in cement) decreased from 0.85 in 2003 to 0.77 in 2010, and long-term predictions are that this number will continue to decrease as far as 0.71. 

Fly ash, the most commonly used pozzolan in concrete, is a by-product of thermal power generating stations. Commercially available fly ash is a finely divided residue that results from the combustion of pulverized coal and is carried from the combustion chamber of the furnace by exhaust gases.

 Fly Ash Limitations

As a by-product of burning coal, fly ash has seen a dramatic drop in availability, as many coal fired electrical plants are being off-lined due to environmental pressure related to air pollution. Many plants are being converted over to burn natural gas, which is both cheaper and cleaner than coal. This leaves the concrete/cement industry looking for a new, more reliable resource to replace fly ash.

THE FUTURE OF FLY ASH / Caltrans Report

The Important future Of SCM Materials

As the supply of fly ash decreases,  alternative SCMs will play a major role in the construction industry where concrete is used. Attached is a detailed paper discussing the relevance of natural pozzolan and other SCM solutions.


MORE ABOUT SCM MATERIALS /  Mineralogical Society Of America

 

Concrete In Practice 

n its most basic form, concrete is a mixture of Portland cement, sand, coarse aggregate and water. So what sounds simple is really an exact science of mixtures and byproducts. The attached document explains in detail the science of concrete and how SMC’s enhance modern day concrete.

Industry News

Purebase Acquires Mineral Processing Equipment From Quove Corporation

Purebase Acquires Mineral Processing Equipment From Quove Corporation

Purebase Acquires Mineral Processing Equipment From Quove Corporation IONE, CA, May 5, 2020 (GLOBE NEWSWIRE) — Purebase Corporation (OTCQB: PUBC), a diversified resource company, headquartered in Ione, California, today announces that it has signed a definitive...

Purebase Releases First Newsletter called Discover It

Purebase Releases First Newsletter called Discover It

Purebase Corporation Releases First Newsletter “Discover It”   IONE, CA, May 4th, 2020 (GLOBE NEWSWIRE) — Purebase Corporation (OTCQB: PUBC), a diversified resource company, headquartered in Ione, California, today announced they have released their first...

Purebase Acquires Pozzolan Mineral Asset in San Bernardino, California

Purebase Acquires Pozzolan Mineral Asset in San Bernardino, California

Purebase Acquires Pozzolan Mineral Asset in San Bernardino, California IONE, CA, April 2nd, 2020 (GLOBE NEWSWIRE) — Purebase Corporation (OTCQB: PUBC), a diversified resource company, headquartered in Ione, California, is pleased to announce that it has signed a...

Purebase Receives Funding from Existing Shareholder Group

Purebase Receives Funding from Existing Shareholder Group

IONE, CA, Sept. 30, 2019 (GLOBE NEWSWIRE) — Purebase Corporation (OTCQB: PUBC), a natural mineral resource company, headquartered in Ione, California, is pleased to announce that it has received a financing commitment of up to $1M from one of its largest shareholders,...

Purebase Eliminates Existing Liabilities In Debt-For-Equity Swap

Purebase Eliminates Existing Liabilities In Debt-For-Equity Swap

IONE, CA – (September 10th, 2019) – Purebase Corporation (OTCQB: PUBC), a natural mineral resource company, headquartered in Ione, California, is pleased to announce that it has eliminated $5,422,362.86 of liabilities through a Debt-For-Equity exchange with existing...

Subscribe To The Newsletter

Subscribe

* indicates required

By providing your e-mail address, you are consenting to receive press releases and other information concerning Purebase Corporation and its affiliates and partners. You may withdraw your consent at any time.