Compósito cimentício com argila caulinítica para extrusão de blocos prismáticos de vedação e estrutural

Abstract

The objective this work is to produce a composite cement material (mortar), having as binder a mixture of portland cement and portland cement and hydrated lime, and as inert a kaolinite and fine sand clay, which presents the same characteristics, for extrusion of one clayey material used by the red ceramic industry, which when moistened may have a plasticity (rheological characteristics) necessary to be extruded in a brick extruder for the production of prismatic blocks (eight holes), maintaining approximately the same properties after drying of the prismatic blocks sealed) made of red ceramic. The hydrated lime used was manufactured in the laboratory where the characterization tests are performed. After the materials were defined, an experimental design was carried out, where the mixtures to be used were defined. The blends were prepared using a laboratory extruder, where the moisture of the conformation was observed in each blend, where an acceptable extrusion occurred. The mechanical tests were performed to identify the mixtures that presented higher compressive strength and higher flexural stresses. It can be concluded that it is possible to produce a composite material using kaolinite clay, hydrated lime and sand, which can be extruded in vacuum traps for the production of prismatic blocks with prismatic holes with thin walls and septa. This type of processing is of high production. With this, there will no longer be a need to deforest the Amazon Forest for the production of firewood necessary for the burning of the red ceramic brick, also contributing to the reduction of the emission of carbon dioxide in the atmosphere.