Compressive strength in simple and colored concrete specimens in the city of Teófilo Otoni

Abstract

This work deals with the comparison of the compressive strength in 4 concrete mixes and rupture of 36 specimens in the city of Teófilo Otoni. The first concrete trace was of    the conventional type and the other three used colored additives in the percentages 3%, 5% and 6%. After curing, axial compression tests were performed on the tests at the ages of 7, 14 and 28 days. Through the disruptions, we can see that the concrete results that obtained results below expectations were samples with percentages of 5% and 6% pigments. Samples with 3% additive showed resistance close to theoretical values of 18, 25 and 40 MPa. The presence of biotite in the region's aggregates also may have contributed to the loss of strength of the concrete, due to its lamellar aspect, which demands more water and makes it difficult to incorporate the aggregates.