AS 1012.3.5:2015 pdf free download – Methods of testing concrete Method 3.5: Determination of properties relatedto the consistency of concrete—Slump flow，T500 and J-ring test

AS 1012.3.5:2015 pdf free download – Methods of testing concrete Method 3.5: Determination of properties relatedto the consistency of concrete—Slump flow，T500 and J-ring test.
i-ring passing ability is measured by flow through tight openings such as the spaces between various configurations of vertical steel reinforcement formed by a i-ring assembly as prescribed in this Standard, without segregation or blocking.
NOTE: The slump-flow, T10 time and i-ring passing ability are tests that assess the flowability, the flow rate and passing ability of Sue. The result is an indication of the tilling ability. resistance to segregation and/or susceptibility to blockage of SCC. The T time is also a measure of the speed of flow and hence the viscosity (cohesion) of the SCC.
5 APPARATUS
5.1 Mould
The slump cone mould shall be a hollow frustum of a cone made of non-reactive rigid material at least 1.5mm thick which will hold its shape under the weighted collar, if used, and the internal surface shall he smooth. The bottom and the top of the slump cone shall he open and at right-angles to the axis of the cone. The slump cone shall he provided with a means of holding in place during filling and lifting the slump cone when filled. The internal
dimensions of the slump cone shall be as follows:
(a) Bottom diameter (see Figure 2) 200 ±5 mm.
(b) Top diameter 100 ±5 mm.
(C) Vertical height 300 ±5 mm.
NOTES:
I A suitable slump cone is illustratcd in Figures 1 to 3.
2 Attachments to thc slump cone preferably should be welded. If rivets arc used in the construction of the slump cone, they have to be countersunk flush on the inside of the cone.
3 To facilitate holding of the slump cone in place during tilling it is possible to place an additional mass onto the slump cone above the handles provided that the mass is sufficient to not allow the concrete to escape from the slump cone during tilling and does not interfere with tilling the slump cone or 1ifing operations.
5.2 Rod
The rod used for striking off concrete from the top of the slump cone shall he a metal rod of
16 ±1 mm in diameter, approximately 60() mm long and having at least one end tapered for
a distance of approximately 25 mm to a spherical shape having a radius of approximately
5 mm.
5.3 Scoop
The scoop shall be made from non-absorbent material not readily attacked by cement paste of capacity not less than 1 L and suitable for taking increments of the concrete.
5.4 Base plate
The base plate shall he a non-reactive rigid flat plate with smooth, non-absorbent surface, at least l00 mm greater in diameter than the maximum slump how expected, marked with a circle of 200 mm diameter indicating the central location of the slump cone, and a further concentric circle of 500mm diameter (see Figures 2, 3 and 4).
8.2 J-ring passing ability difference j,) The following shall be calculated:
(a) Calculate the difference in concrete height at each of the four locations measured in Clause 7, Step (m).
(b) Calculate the i-ring passing ability difference (jr) as the average of the difference in concrete height at the four locations.
9 RECORDS
The following information shall be recorded:
(a) Identification of the concrete.
(b) Job site or laboratory where tested.
(c) Date and time of test.
(d) Slump flow, in millimetres.
(e) If determined, the T00 time (flow rate) in seconds, to the nearest 0.1 s.
(f) If determined, the i-ring passing ability difference, in millimetres.
(g) Whether blocking or segregation has occurred.
(h) Identification of testing Operator.
(i) Reference to this Standard. i.e. AS 1012.3.5.
10 REPORT
In the event of a report being prepared. the following information shall be included:
(a) Identification of the concrete.
(b) Date of test.
(c) Slump flow in millimetres, to the nearest 5 mm.
(d) If determined, the T00 time (flow rate) in seconds, to the nearest 0.2 s.
(e) If determined, the i-ring passing ability in millimetres, to the nearest 1 mm.
(f) If determined, whether blocking or segregation has occurred.
(g) Reference to this Standard, i.e. AS 1012.3.5.
(h) Such other information contained in the sampling records (see AS 1012.1) as may be requested.