Hi Timothy, its depends what region of the world you are referring to ? For the USA the NRMCA EPD is a good baseline, as is the regional NRMCA report that breaks down the country into different regions. EC3 is another good tool for specific manufactures in the US.
NRMCA_EPD10294 - US concrete benchmark.pdf (3.6 MB)
NRMCA_Benchmark_Report_-_October_14_2014_web (1).pdf (814.7 KB)
Both aren’t perfect but a good place to start.