An Empirical Model to Predict Chloride Penetrations in Concrete Containing Palm Oil Fuel Ash Based on 10-Year Exposure Under Marine Environment

International Journal of Concrete Structures and Materials

Table 3 The empirical coefficient k₁ and chloride concentration at concrete surface (C₀)

Mix	Empirical coefficients k₁					Chloride concentration at concrete surface, C₀ (% by weight of binder)
Mix	1 year	3 years	5 years	7 years	10 years	1 year	3 years	5 years	7 years	10 years
I40P00	0.825	0.738	0.725	0.721	0.728	1.80	5.95	7.15	7.45	8.95
I40P15	0.875	0.789	0.785	0.782	0.772	1.45	5.65	7.25	8.15	8.95
I40P25	0.876	0.799	0.798	0.795	0.793	1.43	5.15	6.55	7.65	8.25
I40P35	0.879	0.795	0.782	0.775	0.765	1.40	6.15	6.75	7.35	7.95
I40P50	0.876	0.769	0.755	0.75	0.743	1.43	5.15	6.15	6.95	8.55
I45P00	0.753	0.736	0.730	0.71	0.705	2.00	6.51	8.53	9.15	9.52
I45P15	0.828	0.786	0.753	0.745	0.741	1.85	5.82	7.52	8.52	9.46
I45P25	0.825	0.792	0.785	0.775	0.755	1.83	5.45	7.55	8.12	8.50
I45P35	0.826	0.795	0.779	0.751	0.748	1.80	5.43	7.65	7.95	8.75
I45P50	0.821	0.798	0.759	0.741	0.728	1.85	5.46	7.65	7.95	8.35
I50P00	0.755	0.734	0.725	0.705	0.692	2.51	6.52	10.51	11.50	11.90
I50P15	0.825	0.784	0.760	0.748	0.727	2.20	6.20	10.51	10.65	10.91
I50P25	0.865	0.789	0.765	0.758	0.745	2.35	6.05	7.35	8.75	9.15
I50P35	0.805	0.785	0.783	0.762	0.749	2.55	5.85	8.75	9.55	9.95
I50P50	0.811	0.788	0.760	0.742	0.729	2.85	5.95	8.55	9.55	11.95