Question: degree of workability is high when slump is
Answer: Very dry mixes having slump 0 -- 25 mm are typically used in road making , low workability mixes having slump 10 -- 40 mm are typically used for foundations with light reinforcement , medium workability mixes with slump 50 -- 90 mm , are typically used for normal reinforced concrete placed with vibration , high workability concrete with slump > 100 mm is typically used where reinforcing has tight spacing , and / or the concrete has to flow a great distance .