A utilização da cinza da casca de arroz de termoelétrica como componente do aglomerante de compósitos à base de cimento Portland / The use of thermoeletrical rice husk ash as component of mixtures based in cement agglomerate
AUTOR(ES)
Rafaelle Tiboni
DATA DE PUBLICAÇÃO
2007
RESUMO
Industrial residues, such as pozzolan, can be incorporated in concretes as a solution for polluter refuses, according to sustainable principles. The objective of this work it is to discuss and analyze the use of rice thermoeletrical industry residue, the rice rusk ash (RHA), as mineral addition in durable concretes. The RHA can be used to increase the compression strength of concretes once it has high pozzolanicity and thinness, composed by 88% of silica. It was created mixtures of standard mortars containing 0, 5 10 and 15% of industrial grounded RHA and also with one hour of additional grind. The idea of those mixtures was to evaluate the mechanical strength of the agglomerate (pure Portland cement + RHA). Compression tests in poor, normal and rich concretes with water/agglomerate ratio of 0,45 and 15% of RHA were set too. The tests indicated that the RHA is predominant crystalline and it is a high pozzolanicity material. All the analyses showed that the material has suitable and competitive characteristics for application as agglomerate component.
ASSUNTO(S)
pozolanas mineral addictions adições minerais pozzolans concreto de alto desempenho industrial residues resíduos industriais high performance concrete cinza da casca de arroz rice husk ash
Documentos Relacionados
- Beneficiamentos da cinza de casca de arroz residual com vistas à produção de cimento composto e/ou pozolânico
- EFFECTS OF RICE HUSK ASH ON PROPERTIES OF BAMBOO-PULP-REINFORCED CEMENT COMPOSITES
- CARBONATAÇÃO EM CONCRETO COM CINZA DE CASCA DE ARROZ SEM MOAGEM
- Caracterização física e mecânica de argamassas à base de cimento Portland e cinza de casca de arroz residual
- Avaliação fisica, mecanica e termica do material solo-cimento-cinza de casca de arroz e seu desempenho como parede monolitica