Table 4.

Leaching of metal(loid)s and anions from granules with a comparison to the legislative limits of earth construction in Finland (i.e. a coated road with a max. thickness of the coating material 1.5 m) according to the Finnish Government decree 843/2017. The values exceeding the limits are italicized.

parameter	MK20	MK40	MK60	MK80	MK100	legislative limit
pH	11.34	11.57	11.72	11.74	11.38	—
conductivity [mS cm−1]	15.15	12.19	9.351	6.325	2.734	—
Al [mg kg−1]	13	32	170	280	420	—
As [mg kg−1]	0.23	0.48	0.98	1.2	0.28	2
Ba [mg kg−1]	0.54	0.21	<0.06	<0.06	<0.06	100
Cd [mg kg−1]	<0.002	<0.002	<0.002	<0.002	<0.002	0.06
Co [mg kg−1]	<0.004	<0.004	<0.004	<0.004	<0.004	—
Cr [mg kg−1]	6.3	7.1	4.3	4.1	0.38	10
Cu [mg kg−1]	0.013	<0.01	0.012	0.014	0.019	10
Fe [mg kg−1]	<0.5	<0.5	<0.5	0.62	0.83	—
Mo [mg kg−1]	4.6	4.5	2.9	2.2	0.19	6
Ni [mg kg−1]	0.019	<0.01	<0.01	<0.01	0.015	2
Pb [mg kg−1]	0.0059	0.007	0.0099	0.0087	0.0042	2
Sb [mg kg−1]	2.6	2.8	2.1	1.7	<0.01	0.7
Se [mg kg−1]	0.28	0.44	0.34	0.25	<0.04	1
Ti [mg kg−1]	<0.15	<0.15	<0.15	<0.15	<0.15	—
V [mg kg−1]	3.5	7.3	10	22	24	3
Zn [mg kg−1]	0.27	0.13	0.23	0.27	0.24	15
Hg [mg kg−1]	<0.004	<0.004	<0.004	<0.004	<0.004	0.03
dissolved organic carbon [mg kg−1]	63	35	46	44	57	500
F− [mg kg−1]	44	56	70	52	20	150
Cl− [mg kg−1]	26 000	19 000	11 000	5300	63	11 000
SO42− [mg kg−1]	41 000	30 000	19 000	9900	50	18 000
total dissolved solids [mg kg−1]	1 00 000	78 000	56 000	36 000	9600	—