BS EN 15301-2:2007 – Surfaces for sports areas — Part 2: Determination of shear strength by dynamic top layer testing of unbound mineral surfaces in the laboratory

1 Scope
This part of EN 15301 specifies a method for determining the shear strength by dynamic top layer testing of unbound mineral surfaces in the laboratory.
2 Apparatus
The apparatus shall comprise the following components:
a) (250 ± 5) mm diameter mould with removable base;
b) steel plate used to distribute the compaction force (Figure 1);
c) compaction hammer with drop weight (Figure 1);
 mass of weight: (15,17 ± 0,25) kg;
 drop height: (620 ± 5) mm;
d) shearing disc (Figures 2, 3 and 4);
e) two shearing disc alignment gauges (Figures 2 and 3):
 centring gauge;
 vertical alignment gauge;
f) cardan shaft transmitting the force produced onto the disc (Figure 4);
g) device used to attach the measuring instrument to be installed on the test mould, with a vertical pin for the transmission of shear force by free rotation (Figure 4);
h) instrument for the dynamometric measurement of shear force by rotation (Figure 4);
i) scales weighing up to 10 kg, to an accuracy of within ± 1 g.
BS EN 15301-2:2007 – Surfaces for sports areas — Part 2: Determination of shear strength by dynamic top layer testing of unbound mineral surfaces in the laboratory