Análise de desempenho em argamassa de assentamento e de revestimento com incorporação de cinza de casca de arroz em alvenaria de bloco estrutural e de vedação

Abstract

The growing of the world population, associated with the technological progress, generates as consequence a huge enviroment contamination both for the emition of the toxic gases and for the prodution of big wastes, many times with no right place for the destination. Studies and searchs about the vegetables wastes are being satisfactories when used as alternative materials in the cement composition and mortar as example, the residue rice husk ash (CCA), that can be used in civil construction, specially as CCA that have a high silica teor, that could be used as pozolana. At this point, this work objective is to verify the technical viablility utilization of the residue rice husk ash, as a parcial substitution of the cement in seating mortar and the walls revetment with ceramic blocks and str8kucture hindrance. For the search development, in the beggining was determined the consistense level , mass density and the incorpored air tenor, later was maked the mortar reference and with CCA proportions for the trace seating 1:3 and the revestiment trace 1:2:8 , with parcial substitutions cement 10%, 15%, 20% e 30% of CCA, assays were performed in the hardened mortar tensile strength in bending, in compression, adherence and resustence measurement of dynamic by sonic wavw propagation. Testing technology applied in mortar 1:3 and 1:2:8, laying and covering, respectively, show satisfactory results of the machanical performance, concluding that the use of CCA in making mortar is technically feasible.