ABSTRACT
This paper deals with the special properties of dry concrete, particularly its workability. The exceptional workability of dry concrete might be a disadvantage, but it can as well create new opportunities for some products, such as hollow-core slabs and concrete pipes. General requirements for testing methods are also presented. Four of them are discussed in more detail: Modified VB-test, modified Proctor test, Kango Hammer test and Intensive Compaction test.
