Estudo do comportamento dos blocos fabricados em terra crua segundo as prescrições da NBR 16.814: estudo de caso na cidade de Guaraciaba - SC

Abstract

Constructions with earth date back to the beginning of civilization, however in recent years, due to the need for more sustainable constructions, such construction techniques have had significant expression in civil construction and in the scientific world. In Brazil, a Technical Standard was recently approved that deals with adobes, bricks made from raw earth, NBR 16.814 – “Adobe — Requirements and test methods”. This objective work, through a case study, analyzes the resistance to analysis of adobes produced in Guaraciaba – SC, according to the Standard's procedures, in order to contribute to studies of soil as a construction material. To this end, the adobes produced for this case study were brought to the construction materials laboratory and subjected to the tests proposed by the Standard: determination of the dimensional characteristics of 13 samples and resistance to the evaluation of adobes, with 11 cubic test bodies, enabling the provision of quantitative data. Furthermore, a soil sample used to manufacture the blocks was subjected to granulometric analysis, liquidity and plasticity tests, showing equivalence to the results obtained in the visual tactile analysis. The blocks did not present dimensional standardization due to the interruptions of the standard, however, regarding the characteristic resistance to evolution, the value of 2.23 MPa was obtained, proving to be effective in terms of the minimum common characteristic, which is 1.5 MPa.