MADERA

Abstract

Currently, we seek to improve certain properties of concrete that influence its useful life, which is why this work compared resistance to abrasion wear in concrete samples formed by two types of material, wood and metal; thinking that the variation in concrete strength due to the type of formwork occurs in surface layers and occurs in very small dimensions, so that a compression test of this type is not feasible. In order to analyze this factor, we have taken as reference the Guatemalan Technical Standard 41087 and the ASTM C799 Standard; These test methods simulate the abrasive actions to which the concrete is exposed throughout its useful life. However, not having such mechanisms, we proceeded to create and design a system based on the previous standards in accordance with our limitations, which simulated abrasive actions by friction in the surface layers of our test tubes subjected to different types of formwork. With the information collected from the trials, we proceeded to evaluate them by means of descriptive statistics, achieving the percentages that differentiate the influence of the material with which the concrete is formed, due to the calorific contribution, which contrasted with our initial hypothesis. The main objective was to demonstrate that the steel as a formwork material absorbed part of the heat that the concrete emits at an early age; and being the wood a non-conductive material of heat, it benefited the concrete during its setting. However, our results showed that there is 37% more surface wear and 25% more weight loss during the test in samples with a water-cement ratio of 0.65 for wooden formwork, compared to metal ones; and for samples with a water-cement ratio of 0.61, 18% more surface wear and 10% more weight loss were obtained during the test in which they were veneered with wood, in comparison with those of steel formwork. The following is a series of techniques and data collection instruments that we have implemented throughout this investigation, and we invite you to make more inquiries about the abrasion resistance of the concrete.