Resistance of Recycled Aggregate Concrete (RAC) Subjected to Drying-Wetting Cycles to Attack of Magnesium and Sodium Sulfates

Table 7

Mass loss percentages of concrete specimens partially immersed in 6.5% magnesium sulfate solutions of reference and modified mixtures.

Testing date	Mass loss (%)
	M0	M25	M50	M75	M100
1^st week	0.32	0.23	0.23	0.26	0.30
2^nd week	0.75	0.75	0.77	0.90	1.30
3^rd week	1.67	1.69	1.82	2.50	2.90
4^th week	3.20	3.50	3.81	4.40	5.10
5^th week	4.70	5.20	6.00	6.90	7.90
6^th week	7.00	7.10	7.90	8.20	10.10
7^th week	8.30	8.60	10.30	10.80	12.60
8^th week	10.50	11.10	13.00	15.00	17.10
9^th week	11.50	12.20	14.20	16.70	19.10
10^th week	12.20	13.70	16.20	18.90	21.70