Research on Electrical Conductivity and Mechanical Properties of Ecological Concrete Prepared from Mine Solid Waste

Table 9

Mechanical properties and electrical conductivity of nanographite–cupric nickel sulfate ore (G3 groups).

No.	Compressive strength (unit MPa)			Flexural strength (unit MPa)			Electrical conductivity (unit Ω·cm)
	7d	14d	28d	7d	14d	28d	7d	14d	21d	28d
G3C20	20.89	22.59	29.63	4.24	4.71	5.83	2,520	2,580	5,670	6,050
AG3C20	22.27	24.87	30.61	5.16	6.05	6.14	2,720	2,880	4,430	5,050
UG3C20	22.52	27.19	32.14	4.94	5.28	6.52	2,620	4,090	7,200	8,920
AUG3C20	23.29	27.27	33.36	4.76	5.83	6.68	2,640	2,920	3,890	6,450
G3C40	21.27	24.22	29.64	4.75	5.71	5.91	2,790	3,390	3,790	9,010
AG3C40	22.06	24.02	30.67	4.75	5.72	6.44	3,480	3,810	4,520	9,030
UG3C40	21.46	25.63	30.15	5.6	6.65	6.95	2,210	2,660	3,390	8,990
AUG3C40	27.25	33.3	31.5	6.55	6.85	7.23	2,150	2,380	3,720	7,090
G3C60	23	28.82	30.02	4.69	5.67	6.9	2,360	3,130	6,400	9,660
AG3C60	21.44	29.78	32.28	4.76	5.67	6.7	3,050	3,710	4,500	5,100
UG3C60	25.1	31.66	31.19	5.2	5.1	6.2	4,500	6,450	6,830	8,850
AUG3C60	25.21	34.33	35.55	5.95	5.98	6.44	4,720	5,960	6,180	6,740