Study on Fatigue Test and Life Prediction of Polyurethane Cement Composite (PUC) under High or Low Temperature Conditions

Table 6

Fatigue life of polyurethane cement specimens at different temperatures.

No.	Strain level (με)	−50°C	−40°C	−30°C	−20°C	−10°C	0°C	10°C	20°C	30°C	40°C	50°C
		Fatigue life (number)
1	400	392631	518763	747390	993724	1498270	>2000000	>2000000	>2000000	＞2000000	＞2000000	＞2000000
2	400	319479	428807	684336	1085284	1665185	＞2000000	＞2000000	＞2000000	＞2000000	＞2000000	＞2000000
3	400	449539	678972	814969	911322	1762258	＞2000000	＞2000000	＞2000000	＞2000000	＞2000000	＞2000000
4	600	192460	365785	383470	632548	1076777	1344321	1734708	＞2000000	＞2000000	＞2000000	＞2000000
5	600	244095	290690	442520	695192	1011678	1479783	1854321	＞2000000	＞2000000	＞2000000	＞2000000
6	600	156358	255897	490959	589397	1146744	1282322	1777940	＞2000000	＞2000000	＞2000000	＞2000000
7	800	84235	163918	246023	398959	656776	890059	1381245	1539169	1745695	＞2000000	＞2000000
8	800	97053	140931	218287	425446	603375	814969	1459213	1398270	1659952	＞2000000	＞2000000
9	800	116493	198305	283462	342926	589297	970538	1401234	1678341	1847462	＞2000000	＞2000000
10	1000	39885	89709	144525	276848	398859	617789	1034321	1232846	1398270	1527104	＞2000000
11	1000	50268	107677	126229	244095	354450	695192	1089471	1153423	1286365	1591601	＞2000000
12	1000	58929	80858	152710	208220	432195	583844	1115234	1333478	1505625	1458934	＞2000000
13	1200	23430	41880	78352	152114	242182	471274	814769	955353	1107718	1204523	1527104
14	1200	20336	57013	73571	123284	262010	422111	759246	897051	1043410	1252403	1453428
15	1200	27467	49874	91132	146818	221750	453059	854321	1068336	1204082	1283428	1603479