Diseños de hormigones con materiales premezclados y análisis con el método tradicional

Abstract

At present, the practice of construction and civil works carried out by workers and unqualified personnel becomes more common, as well as empirical designs in the preparation of concrete mixtures and the implementation of premixed aggregates whose physical properties are unknown. , these aggregates consist of a mixture of sand and gravel with variable proportions and unknown gradation. The scope of this work is to carry out an optimal design of concrete from the proportions that the premixed material provides, the ACI concrete design method will be taken as a basis and it will be adjusted to the guidelines of the aggregate. To carry out these designs, the physical and mechanical properties of the aggregate must be known, so tests will be carried out on the premixed material such as granulometry, densities, specification gravity and loose and rod volumetric weight, adhering to the guidelines defined by the NTE INEN and ASTM. And finally, the simple compression test is carried out for the concretes designed based on premixed aggregates, where the resistance to compression required in the design will be determined and thus obtaining an optimal dosage model that guarantees safety and quality in the implementation of this mixture. for the elaboration of structural elements, and some type of civil work that requires it.