AS 1012.3.5:2015 pdf free

AS 1012.3.5:2015 pdf free.Methods of testing concrete
Fill the slump cone by pouring in concrete continuously until it reaches the top edge without vibration or tamping. Over-fill the slump cone slightly and if a detachable conical collar or funnel is used (see Note) then remove this.
NOTE: A detachable conical collar or funnel may be used to facilitate filling the slump cone.
The collar or funnel should not penetrate the slump cone by more than 5 mm. Strike off the surface of the concrete level with the top of the slump cone by means of a screeding and rolling motion of the rod so that the slump cone is filled exactly.
Quickly remove any concrete overflow from around the base of the mould to preclude interference with the movement of the flowing concrete and while doing so avoiding any movement or vibration of the slump cone.Maintain a firm downward pressure at all times until the slump cone is removed. Immediately remove the slump cone from the concrete by raising it slowly and carefully in a vertical direction, allowing the concrete to subside as it flows concentrically along the test surface. Complete the operation of raising the slump cone in 3±1 S in a steady vertical lift without causing any tilting, lateral or torsional movement of the slump cone and without interfering with the flow of the concrete.
If the Ts0o time (flow rate) is required, start the stopwatch immediately the slump cone ceases to be in contact with the base plate and record the time to the nearest 0.1 second, for the spreading concrete to reach the marked 500 mm (see Figure 2) circle at any point.
NOTE: It is possible for the stopwatch to be operated by the concrete tester or another person under the concrete tester’s supervision.
When segregation assessment is required, assess the stability and resistance to segregation of the SCC by checking the concrete spread for detectable blocking and/or segregation. Record and report as either segregated or not segregated.AS 1012.3.5 pdf free download.