Raw data of the cyclic tests on the cylindrical specimens

Abstract

This dataset contains the raw data of the cyclic tests on concrete cylinders to determine the number of cycles to failure and the stiffness develpment of the different batches. Two concrete mixes were investigated (C30 and C80). The batch is referenced by a roman number (I to VI). The specimens were loaded with a sinusoidal load, oscillating between a relative minimum and a maximum load level. The minimum load level is 5% of the average compressive strength of the respective comcrete batch and the maximum load level either 65% or 75%, which can be found in the file name. Some specimens were subjected to a two stage loading, which is indicated by '7565' for high-low loading or '6575' for low-high loading respectively. The specimens were loaded until failure. If a maximum number of cycles of 2 million was reached, they were stopped as well and counted as run-outs. Following channels are used in each file: Zeit (Standardmessrate) [time (standard measuring rate)] in s, Zeit (langsame Messrate) [time (slow measuring rate)] in s, Kraft [force] in kN, Maschinenweg [machine displacement] in mm, Laser bei Umfang [displacement measured by laser sensor at circumference] 0° in mm, Laser bei Umfang [displacement measured by laser sensor at circumference] 120° in mm, Laser bei Umfang [displacement measured by laser sensor at circumference] 240° in mm, Lufttemperatur [air temperature, related to the slow measuring rate] in °C, Temperatur Mitte [temperature at middle height of the specimen] in °C, Lastwechsel [number of cycles], Laser gemittelt [average of the three laser sensors] in mm