Incorporação de resíduos vítreos na fabricação de blocos de concreto

Abstract

Currently population growth has been progressing gradually, coupled with this factor, it is possible to notice significant environmental problems, which occur due to the need for expansion and construction. Therefore, there is a gradual increase in solid waste generation. As a result, there is accumulation of waste in controlled dumps and landfills, inappropriate places for final disposal, in addition to the devaluation of waste due to the absence of treatment processes, such as recycling. This has been significantly affecting the environment causing negative impacts. Waste accumulation causes not only atmospheric pollution but also soil and aquifer pollution. Thus, it is understood that the glass is a 100% recyclable product, and it is known that in the construction sector, the demand for this material is constant, thus increasingly removing them from rivers. In this work the use of glass in civil construction was evaluated as an alternative waste to the use of sand. From this, specimens were created and subsequently subjected to tests to analyze the behavior of the glass present. Voted brand cement, medium and fine sand, stone dust, ground glass (glass dust) and water were used. At first three block models were produced, being the first of the conventional model, this one presented only the normal mixture, without the addition of the glass dust. In the second sample model, specimens were created with the addition of 10% glass dust instead of fine sand, and finally the third model with the addition of 20% glass dust. Compressive strength, water absorption and heat analysis tests were analyzed. In the compressive strength tests, a higher N/m² - MPa (Mega Pascais) result was obtained, in which, from the results obtained, the third sample with 20% glass dust was more resistant to bear higher load until its rupture. In water absorption tests the two models with the addition of glass dust were in accordance with current regulations, absorbing on average 5.3% of water. In the heat test, the different types of samples were submitted to a temperature of 100°C, this analysis showed no significant influence of the presence of the glass dust. From the tests performed, the models produced proved effective, except the compressive strength test which did not meet the standards required by the legislation. From the work and analyzes performed, only the water absorption analyzes reached the standards established by the standard, which does not make the blocks indicated for use in road paving.