Compositions, Process, and Method for Producing Hybrid Green Cements and Their Concrete Products

Case ID:
11-1053

A Wayne State University researcher has developed a novel method to make sustainable Hybrid Green Cements (HGC) from low cost minerals and waste minerals such as coal, ash, bio-mass ash, or mine tailings.  Key issues that the researcher has identified include optimal ranges of hybrid mix compositions, processing, and curing conditions. 

HGC provides better alternatives to Portland cement in several aspects.  By using waste materials and active mineral components that can be calcined at much lower temperatures than those of Portland cement, the new green cements are energy efficient and emit much less CO2 from their production.   Green cements also have a significant absorption capability of ambient CO2 by the carbonation process.  Compared to Portland cement, the new hybrid green cements have very high early strengths and their long term strengths are the same or superior to those of Portland cement, with a significantly higher ductility.  

 

Commercial Applications:

·         HGCs can be used as partial or complete substitutes for Portland cement in all facets of concrete applications

 

Competitive Advantages:

·         Significant reduction in the amount of energy consumed during cement manufacturing processes

 

·         Significant reduction in the amount of CO2 emitted during the cement manufacturing process  (3-9 times less than is emitted during production of Portland cement)

 

·         HGCs have strengths that are similar or superior to Portland cement, while having a dutility that is 2-3 times better

 

·         More sustainable and duralbe alternative to Portland cement

 

Patent Status:

Patent pending

Patent Information:
For Information, Contact:
Nic Wetzler
Wayne State University
nic.wetzler@wayne.edu
Inventors:
Hwai-Chung Wu
Keywords: