https://store.astm.org/c0311_c0311m-22.html
C311/C311M Standard Test Methods for Sampling and Testing Fly Ash or Natural Pozzolans for Use in...
https://docs.lib.purdue.edu/cib-conferences/vol1/iss1/110/
"Performance of Natural Pozzolans (NPs) in Field Concrete Mixtures" by Bibigul Zhaksybay, Alberto...
Cement, the binding component of concrete, the most widely used construction material in the world, accounts for 8% of global CO2 emissions. Its significant...
https://store.astm.org/stp39404s.html
Effect of Calcination on Natural Pozzolans
effectcalcinationnaturalpozzolans