Mechanical and Durability Properties of Concrete Made with Used Foundry Sand as Fine Aggregate

Table 5

RCPT, permeability coefficient, and carbonation depth values of all concrete mixtures.

Mixtures designation	RCPT values		Permeability coefficient		Carbonation depth		Carbonation coefficient
	(Coulombs)		(10^−12 m/s)		(mm)		(mm/year^0.5)
	180 days	365 days	180 days	365 days	180 days	365 days	0.5 year	1 year
CM	420	580	5.9	6.24	1.21	2.64	1.711	2.640
FS 10%	468	598	6.2	6.85	1.28	2.96	1.810	2.960
FS 20%	516	654	6.9	7.64	2.01	3.18	2.843	3.180
FS 30%	621	728	7.2	8.12	3.12	3.71	4.412	3.710
FS 40%	816	991	9.1	10.48	4.85	5.45	6.859	5.450
FS 50%	1021	1218	11.8	13.18	6.2	8.41	8.768	8.410