AS NZS 1141.17:2014 pdf free
AS NZS 1141.17:2014 pdf free.Methods for sampling and testing aggregates
Of the form shown in Figure 1, made of steel, and consisting of the following:
(a) A base of approximately the dimensions shown in Figure 1.
(b) A cylinder of 25 ±1 mm internal diameter and 65 mm internal depth, closed at one end.
(c) A ram or plunger of such diameter as will allow it to slide freely in the cylinder with minimum lateral play, provided with a hole to allow air to escape. The hole, about 5 mm in diameter, shall be drilled axially from the top to about 13 mm from the bottom. From the bottom upward the hole shall be about 1.5 mm diameter and about 1.5 mm off-centre, meeting the hole drilled from the other end. The plunger shall have a circumferential groove about 6.5 mm from its lower end to accommodate filler that works up the side of the cylinder while in use. The mass of the plunger shall be 350 ±2 g.
(d) Means for raising the cylinder and dropping it freely between vertical guides from a height of 101.5 ±0.25 mm to the base. The total mass dropped onto the base shall be 850 g to 900 g, including the filler.
(e) Means for reading the depth of the compacted filler in the cylinder to an accuracy of 0.1 mm.
The compaction apparatus shall be used dry, without lubricant on any part. During use the apparatus shall be held or clamped firmly on a rigid, level, non-resilient support; a position above the leg on a firm bench is recommended.
Three determinations of the percentage dry voids shall be made, using a separate test portion of filler for each determination. If any of these values differs by more than 1.0% from the mean percentage, that value shall be discarded and two further determinations shall be made.
The plunger shall remain free to move in the cylinder throughout this operation, and to ensure this it shall be eased frequently by twisting it in the cylinder and, if necessary, removing it and wiping it clean of clogging filler.AS NZS 1141.17 pdf free download.
