On August 21, the General Office of the Ministry of Housing and Urban-Rural Construction issued a circular on the public consultation of the national standard "Concrete Quality Control Standard (Revised Draft for Consultation)". The deadline for feedback is September 21, 2026.

It is mentioned that steel slag should not be used as coarse aggregate. Steel slag shall not be used as fine aggregate. The mineral admixture


used in the concrete may include fly ash, granulated blast furnace slag powder, silica fume, limestone powder, natural pozzolana material, natural zeolite powder, steel slag powder, phosphorus slag powder, and composite admixture; two or more mineral admixtures may be mixed according to a certain proportion. Steel slag powder shall comply with the relevant provisions of the current national standard Steel Slag Powder for Cement and Concrete GB/T 20491.
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