This standard uses formwork to suppress the expansion of poured mortar by placing a weight on the top of the formwork, and to suppress the expansion of pouring mortar.
KS F 2426-2010 history
2020KS F 2426-2020 Standard test method for compressive strength of mortar grouting
2010KS F 2426-2010 Standard test method for compressive strength of mortar grouting
1985KS F 2426-1968 Standard test method for compressive strength of mortar grouting