Slump Test of Concrete
searchfeed Slump tEST (IS:1199-1959) OBJECTIVe To determine the workability or consistency of concrete mix of given proportion by slump test. REFERENCE STANDARDS IS : 1199-1959 – Methods of tests for Slump of concrete. EQUIPMENT & APPARATUS § Slump Cone with base plate § Tampering Rod PROCEDURE Take the sample concrete from the discharge location. The internal surface of the slump cone is to be thoroughly cleaned and placed on a smooth, horizontal, rigid and non absorbent surface. Place the mixed concrete in the cleaned slump cone in 4 layers each approximately 1/4 in height of the mould. Tamp each layer 25 times with tamping rod. Remove the cone immediately, rising it slowly and carefully in the vertical direction. As soon as the concrete settlement comes to a stop, measure the subsistence of the concrete in cms, which gives the slump. searchfeed SAFETY & PRECAUTIONS The strokes are