Long-Term Vibration Monitoring of the Effects of Temperature and Humidity on PC Girders with and without Fly Ash considering ASR Deterioration

Table 14

Numerical analysis and measured results of two bending modal frequencies.

Time; Month	Average temperature; °C	Young’s modulus; N/mm^2	Bending 1st mode		Bending 2nd mode
			Experiment	Analysis	Experiment	Analysis
			Hz	Hz	Hz	Hz
25-May-15	33.00	37191	9.593	9.576	34.506	37.054
09-Jul-15	23.40	38305	9.822	9.713	35.453	37.583
18-Aug-15	27.40	37841	9.874	9.656	35.261	37.363
03-Nov-15	17.25	39019	9.981	9.799	35.787	37.918
16-Mar-16	11.45	39693	10.041	9.880	36.266	38.231
23-May-16	22.38	38424	9.855	9.727	35.112	37.639
21-Jul-16	26.75	37916	9.826	9.665	34.957	37.399
02-Sep-16	30.45	37487	9.759	9.613	34.385	37.195