2006JGJ 52-2006 Standard for technical requirements and test method of sand and crushed stone (or gravel) for ordinary concrete
1992JGJ 53-1992 Technical requirements and test method of gravel and crushed stone for ordinary concrete
JGJ 53-1992 Technical requirements and test method of gravel and crushed stone for ordinary concrete was changed to JGJ 52-2006 Standard for technical requirements and test method of sand and crushed stone (or gravel) for ordinary concrete.