Análise da resistência a compressão simples de um solo argiloso artificialmente cimentado.

Abstract

With the increase of civil construction and the difficulty of finding areas that present a soil considered to be of good resistance, it is increasingly frequent to look for solutions that present a better cost benefit for the type of work to be implemented. Located in the region of the Paraíba hinterland, the city of Sousa / PB is one of the places where it presents difficulties with its soil, so we sought to make an analysis of the soil of the municipality. The soil collected had a low resistance, causing cases of cracks to be found in works located in the region. The work sought to characterize this soil and analyze if it would present a higher resistance when mixed with cement. The characterization tests used were granulometry, atteberg limits, CBR, simple compression, among others. The characterization showed that the soil was clay-silt type, this type of soil, in times of rain presents a low resistance and in the dry season a high rigidity. From this, it was analyzed if the addition of Portland cement, type CP V ARI, in this soil, would cause its stabilization and increase of its resistance. Five different cement contents (2, 4, 6, 8 and 10%) in relation to the dry weight of the soil were used and tests were made for normal and intermediate proctor compaction energy. Tests were also made for the healing time of seven and fourteen days. The Brazilian standard determines that the soil-cement technique must have a minimum resistance of 2.1 MPa at seven days of cure, so that it can be used as a floor layer. From this, it can be considered that the results found in the simple compression test were satisfactory, since three of the five cement levels used achieved the minimum strength proposed by the Brazilian standard.