Study of the importance of core cylinders in the monitoring of the compressive strength of the concrete

J De,D Borrero Restrepo,M Murillo,La Iglesia

doi:10.1088/1757-899x/1126/1/012050

J De, D Borrero Restrepo + Show 2 more

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https://doi.org/10.1088/1757-899x/1126/1/012050

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Abstract

The fulfillment of the resistance to the compression as a fundamental property of the concrete, during the process of execution of a work, constitutes great work for all the factors that intervene in the constructive process. The same concrete cannot be suitable for all structures, many times when using the same mixture, failures can occur with relevant damage. This situation frequently occurs at construction sites and resources must be allocated to repair structures to guarantee their useful life. This research aims to focus on the importance of performing compressive strength tests and taking enough samples for reliable results. For this purpose, 36 concrete test samples were taken from different structural elements of work according to the requirements of the standard. Subsequently, the laboratory tests were carried out at 7, 14, 28, and 56 days with a control cylinder, to analyze the behavior of each sample according to the concrete specifications requested for the different types of structures. From the results obtained, we could observe the differences in the percentages achieved by each of the samples and the type of failure presented, in turn, the importance of the control cylinder, for the monitoring of the strength of the concrete.

Highlights

Concrete is the most used construction material in the world, manufactured by man, occupies the second place after the water in its use, more than six thousand tons are produced annually, for its manufacture raw materials are used as cement, sand, and aggregates, the aggregates are inert and rigid materials that form a granular skeleton, constitute approximately 65% to 75% of the total volume of concrete, besides, water, additives that represent the remaining volume
The laboratory tests were carried out at 7, 14, 28, and 56 days with a control cylinder, to analyze the behavior of each sample according to the concrete specifications requested for the different types of structures
The objective of this study is to demonstrate the methodological process to determine the resistance of a mixture, through tests of resistance to compression, which will be carried out according to what is established by the ASTM C39 Standard, considering all the factors involved in the process from sampling to the test where the resistance reaches at least 100%. which are analyzed at different times, in the case of non-compliance, a control cylinder is tested at 56 days of age to corroborate the strength of the structure, essay of great importance, and that gives a part of tranquility in the work that is being carried out

Summary

Introduction

Concrete is the most used construction material in the world, manufactured by man, occupies the second place after the water in its use, more than six thousand tons are produced annually, for its manufacture raw materials are used as cement, sand, and aggregates, the aggregates are inert and rigid materials that form a granular skeleton, constitute approximately 65% to 75% of the total volume of concrete, besides, water, additives that represent the remaining volume. New materials have been incorporated into the concrete, among them minerals, chemicals, fiber; the concrete is a heterogeneous product and its mechanical behavior [1]. It is increasingly important to determine the resistance to the impact load and in turn to determine the strength properties of cement-based materials at an experimental level before they can be considered for use in construction [2]

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