A blend of cement and sand mixed to the following ratios:
33:1 – 3%
25:1 – 3.8%
20:1 – 4.8%
14:1 – 6.7%
12:1 – 7.7%
10:1 – 9%
9:1 – 10%
8:1 – 11%
** We can supply stabilised sand upon request