Concrete characteristics according to Eurocode 2

Strength and deformation characteristics of concrete according to Eurocode 1992-1-1

Concrete class	f_ck (MPa)	f_ck,cube (MPa)	f_cm (MPa)	f_ctm (MPa)	f_{ctk, 0.05} (MPa)	f_{ctk, 0.95} (MPa)	E_cm (MPa)	ε_c1 (‰)	ε_cu1 (‰)	ε_c2 (‰)	ε_cu2 (‰)	n	ε_c3 (‰)	ε_cu3 (‰)	V_rdmax (MPa)	V_ck (MPa)	f_bd,good (MPa)	f_bd,bad (MPa)	ξ_MAX (MPa)	ω_lim (MPa)
C8/10	8	10	16	1.2	0.8	1.5	25000	1.7	3.5	2	3.5	2	1.75	3.5	1	1.5	1	0.7	0.45	0.365
C12/15	12	15	20	1.6	1.1	2	27000	1.8	3.5	2	3.5	2	1.75	3.5	1.5	2.2	1.5	1	0.45	0.365
C16/20	16	20	24	1.9	1.3	2.5	29000	1.9	3.5	2	3.5	2	1.75	3.5	2	3	2	1.4	0.45	0.365
C20/25	20	25	28	2.2	1.5	2.9	30000	2	3.5	2	3.5	2	1.75	3.5	2.5	3.7	2.3	1.6	0.45	0.365
C25/30	25	30	33	2.6	1.8	3.3	31000	2.1	3.5	2	3.5	2	1.75	3.5	3.1	4.5	2.7	1.9	0.45	0.365
C28/35	28	35	36	2.8	1.9	3.6	32000	2.13	3.5	2	3.5	2	1.75	3.5	3.3	4.9	2.9	2	0.45	0.365
C30/37	30	37	38	2.9	2	3.8	33000	2.2	3.5	2	3.5	2	1.75	3.5	3.6	5.3	3	2.1	0.45	0.365
C32/40	32	40	40	3	2.1	3.9	33400	2.2	3.5	2	3.5	2	1.75	3.5	3.8	5.6	3.1	2.2	0.45	0.365
C35/45	35	45	43	3.2	2.2	4.2	34000	2.25	3.5	2	3.5	2	1.75	3.5	4.2	6	3.3	2.3	0.45	0.365
C40/50	40	50	48	3.5	2.5	4.6	35000	2.3	3.5	2	3.5	2	1.75	3.5	4.6	6.7	3.8	2.6	0.45	0.365
C45/55	45	55	53	3.8	2.7	4.9	36000	2.4	3.5	2	3.5	2	1.75	3.5	5.1	7.4	4.1	2.8	0.45	0.365
C50/60	50	60	58	4.1	2.9	5.3	37000	2.45	3.5	2	3.5	2	1.75	3.5	5.5	8	4.4	3	0.45	0.365
C55/67	55	67	63	4.2	3	5.5	38000	2.5	3.2	2.2	3.1	1.75	1.8	3.1	5.5	8	4.5	3.2	0.35	0.26
C60/75	60	75	68	4.4	3.1	5.7	39000	2.6	3	2.3	2.9	1.6	1.9	2.9	6.3	9.1	4.7	3.3	0.35	0.243
C70/85	70	85	78	4.6	3.2	6	41000	2.7	2.8	2.4	2.7	1.45	2	2.7	7	10.1	4.7	3.3	0.35	0.223
C80/95	80	95	88	4.8	3.4	6.3	42000	2.8	2.8	2.5	2.6	1.4	2.2	2.6	7.5	10.9	4.7	3.3	0.35	0.21
C90/105	90	105	98	5	3.5	6.6	44000	2.8	2.8	2.6	2.6	1.4	2.3	2.6	7.9	11.5	4.7	3.3	0.35	0.204
C100/115	100	115	108	5.2	3.7	6.8	45000	2.8	2.8	2.6	2.6	1.4	2.4	2.6	7.9	11.5	4.7	3.3	0.35	0.204

Formulas:

f_cm = f_ck + 8 (MPa)

f_ctm = 0,30 · f_ck^2/3 for ≤ C50/60

f_ctm = 2,12 · ln(1 + (f_cm / 10)) for > C50/60

0,7 · f_{ctk, 0.05} (5% fractile)

1,3 · f_{ctk, 0.95} (95% fractile)

E_cm = 22000 · (f_cm / 10)^0,3

ε_c1(‰) = 0,7 · f_cm^0,31 < 2,8 for f_ck ≥ 50 MPa

ε_cu1(‰) = 2,8 + 27 · [(98 - f_cm) / 100]⁴

ε_c2(‰) = 2,0 + 0,085 · (f_ck - 50)^0,53

ε_cu2(‰) = 2,6 + 35 · [(90 - f_ck) / 100]⁴

n = 1,4 + 23,4 · [(90 - f_ck) / 100]⁴

ε_c3(‰) = 1,75 + 0,55 · [(f_ck - 50) / 40]

ε_cu3(‰) = 2,6 + 35 · [(90 - f_ck) / 100]⁴

f_bd = 2,5 · η₁ · η₂ · f_ctd

f_bd = 2,5 · η₁ · η₂ · f_ctd