Estudo da durabilidade de paredes monolíticas e tijolos de solo-cimento incorporados com resíduo de granito.

Abstract

It is a source of concern the large amount of waste generated during the processing of ornamental granite rocks which indicates the need for recycling this material. Also, the civil engineering constructions shows to be an important sector of national economy along with the challenge for sustainable development. Therefore, the search for alternative building materials has increased in recent decades. The use of waste produced by industry of granite in the manufacture of soil-cement material has proved satisfactory. However, the wide use of this material is necessary in order to know their behavior over time. It is important to know the conditions of use and durability of a new material particularly that of the residue, so there is reliability in their technological applications. The main objective of this research is to study the durability of monolithic walls and ecological soilcement bricks with incorporated granite waste. The physical and mineralogical characterizations were done using particle size distribution by laser diffraction,determination of Atterberg limits, chemical analysis, thermogravimetric analysis, thermal analysis and X-ray diffraction. The mixes used in the study were 1:10 for monolithic walls and 1:9, 1:10 and 1:12 using substitution proportions by weight of the soil by granite waste in proportions ranging from 30, 40 and 50%. The physical-m echanical properties were water absorption and unconfined compressive strength. To evaluate the durability of the materials studied it was was the methodology of accelerated ageing through cycles of wetting and drying. The results showed that the increase of the residue into the soil-cement mixture decreases the unconfined compressive strength, increases the loss of mass and volume change. It was also shown that the increased incorporation of granite waste in the soil-cement bricks affect its durability