Investigation on the Sulfuric Acid Corrosion Mechanism for Concrete in Soaking Environment

Table 4

Titration pH value and titration sulfuric acid concentration.

Test group	1	2	3	4	5	6	7	8
Water-cement ratio	0.40	0.50	0.60	0.70	0.35	0.45	0.55	0.65
Initial pH value	4.00	3.70	3.40	3.10	2.80	2.50	2.20	2.00
Titration pH value	5.00	4.00	3.60	3.30	3.00	2.70	2.30	2.10
Titration sulfuric acid concentration (mol·L^−l)	0.125	0.125	0.125	0.125	0.125	0.500	0.500	0.500