A Stress-Strain Model for Unconfined Concrete in Compression considering the Size Effect

Table 1

Distribution of parameters in the data records for stress-strain curves.

(MPa)	Range	<20	20–40	40–60	60–80	80–100	Total
	LWC	4	26	8	0	0	38
	NWC	2	3	16	0	5	26
(mm)	Range	<50	50–100	100–200	200–300	>400	Total
	LWC	0	34	1	2	1	38
	NWC	3	19	3	0	1	26
	Range	0.5-1	1-2	2-3	3–5	5–8	Total
	LWC	3	35	0	0	0	38
	NWC	4	8	3	6	5	26
(mm)	Range	4	4–10	10–15	15–20	>20	Total
	LWC	1	2	2	33	0	38
	NWC	0	14	0	12	0	26