Analysis of Compressive Strength by Adding Volcanic Tuff at 5%, 10% and 15% to the Mortar Cement - Sand

Abstract

In the present investigation, volcanic tuff extracted from the Sexi quarry was used as a new addition to Portland Cement, which allows improving the compressive strength of the mortar. Having as general objective: Determine the compressive strength of the Cement-Sand mortar with the addition of volcanic tuff at 5%, 10% and 15%. This objective was obtained through the execution of a methodology, which consisted of carrying out previous tests to determine the properties of the materials used in the preparation of the mortar, then the analysis of the data obtained was carried out to carry out the mixture design, subsequently , the mortar specimens with a side of 50 mm were made, the next day the formwork was removed, labeled, cured, and then tested after 7, 14, 28 days, finally, the specimens were subjected to compression tests. After 28 days of testing, it was obtained that the average maximum compressive strength was 183.26 kg/cm2 corresponding to the specimens with 15% addition and a minimum of 163.06 kg/cm2 for the standard sample. Concluding, that by adding a greater percentage of volcanic tuff, the compressive strength increases, after 7, 14, 28 days.