Buscar
Mostrando ítems 21-30 de 122
Almond-shell biomass ash (ABA): A greener alternative to the use of commercial alkaline reagents in alkali-activated cement
(2021-07-05)
The use of almond-shell biomass ash (ABA) as an alternative component to the commercial reagents used in the activation of blast furnace slag (BFS) systems is investigated. The presence in its chemical composition of a ...
Olive-stone biomass ash (OBA): An alternative alkaline source for the blast furnace slag activation
(2018-07-30)
Alkali activated materials (AAM) are being investigated as an alternative binder that could be more eco-efficient than Portland cement. The effect of olive-stone biomass ash (OBA) on the activation of blast furnace slag ...
Behaviour of metakaolin-based geopolymers incorporating sewage sludge ash (SSA)
(2016-01-01)
In recent years, geopolymers have become a widely researched binding material. There are technological and environmental advantages to using this type of binder instead of Portland cement. In this study, binary systems of ...
Properties of alkali activated lightweight aggregate generated from Sidoarjo Volcanic Mud (Lusi), fly ash, and municipal solid waste incineration bottom ash
(Molecular Diversity Preservation International, 2020-06)
Production of artificial lightweight aggregate (LWA) from industrial by-products or abundant volcanic mud is a promising solution to prevent damaging the environment due to the mining of natural aggregate. However, ...
Análise do cimento álcali ativado quando sujeito à reação álcali-agregado
(Universidade Tecnológica Federal do ParanáPato BrancoBrasilDepartamento Acadêmico de Construção CivilEngenharia CivilUTFPR, 2016-11-22)
The growing environmental concern has stimulated studies for the development of alternative cements, with reduced greenhouse gas emissions in its manufacture. One of these is the alkali activated cement (CAT), which in ...
New geopolymeric binder based on fluid catalytic cracking catalyst residue (FCC)
(Elsevier B.V., 2012-08-01)
This paper provides information about the synthesis and mechanical properties of geopolymers based on fluid catalytic cracking catalyst residue (FCC). FCC was alkali activated with solutions containing different SiO2/Na2O ...
New geopolymeric binder based on fluid catalytic cracking catalyst residue (FCC)
(Elsevier B.V., 2012-08-01)
This paper provides information about the synthesis and mechanical properties of geopolymers based on fluid catalytic cracking catalyst residue (FCC). FCC was alkali activated with solutions containing different SiO2/Na2O ...
Lime/pozzolan/geopolymer systems: Performance in pastes and mortars
(2021-03-22)
Use of lime as construction material is limited mainly by low initial strength. These properties can be improved by adding pozzolanic materials, but the evolution of the reaction usually needs older ages than 7 days. ...
Possibilities of reusing sugar cane straw ash in the production of alternative binders
(2016-01-01)
Sugar cane production is increasing in Brazil due the demand in manufacturing sugar and alcohol. During production process, several wastes are generated, such as sugar cane straw. After a burning process of this waste ...