How to do concrete cube casting

¨      Clean the mould, fit it properly and apply oil

¨      Fill the concrete in 3 equal layers

¨      Tamp each layer with 35 strokes by tamping rod

¨      Strokes of above layer should penetrate the bottom layer

¨      Give additional strokes from sides to remove the air bubbles

¨      Level the cube with trowel

¨      After 3 – 4 hours, do smooth finish

¨      Mark the identification (see list)

¨      Note down the cube details for records

¨      Cover the specimen after 5 hours with wet gunny bags

¨      Demould  the cube after 24 hours

¨      Keep the cube in the curing tank immediately

Frequency of cube casting for each grade of concrete