Comparación de la resistencia del concreto a 28 días mediante pruebas destructivas y no destructivas como esclerómetro y ultrasonido

Abstract

This research analyze and determine the differences between the simple compression test and the assay non destructive that Santo Tomas University owns. It consists on concrete of 21 MPa to 28 days. 206 specimens of concrete were made with the dimensions of (0,15m x 0,30m) and 5 columns with the dimensions of 0,30m x 0,30m x 0,50m) with different amount, regarding the NTC 550 specifications. The curing time for these concrete specimens was 28 days, so they were tested when the concrete had already achieved its maximum resistance and its evaluation was made through non destructive methods like sclerometer and the velocity of direct ultrasonic pulse and semi-direct transmission, and, in addition the compression simple was applied. Same as the cylinders, non destructive essay were made to the structural elements taken in the laboratory and it was compared with the pattern specimens. The tests were applied to the columns for the 14th, 28th and 56th day, to relate the results to the time. The results presented relation to the time, as the time increases, the compression effort and the number of bangs increases, and the VPU decrease. In addition, the resistance to compression of the cylinders through the two essays that don´t cause damage to the inspected element showing the advantages and disadvantages of this essays. This research has the goal of checking the velocity of ultrasonic pulse and the number of bangs in the reinforced concret and in this way, for future researches, it is possible to evaluate through these methods, for the properties that this material has.