Slag Cement
Mostrando 1-12 de 53 artigos, teses e dissertações.
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1. Evaluation of the use of blast furnace slag as an additive in mortars
Abstract Clinker is the raw material used in the manufacture of cement. However, this material is very harmful to the environment, since it is estimated that for every ton of clinker produced, about 1.0 ton of CO2 is released into the atmosphere. For this reason, alternatives were sought for the use of other materials that are less harmful to the environment
REM - International Engineering Journal. Publicado em: 2022
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2. Evaluation of mortars produced with Baosteel slag short flow (BSSF) steel slag as fine aggregate
Abstract The objective was to evaluate the influence of Baosteel slag short flow (BSSF) steel slag, a byproduct of a Brazilian steel mill, as a fine aggregate on the properties of fresh state and on the compressive strength of mortars. The experimental work was to characterize the BSSF steel slag and to produce simple mortars (only cement) and mixed mortars
Cerâmica. Publicado em: 2021-03
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3. Utilization of ferronickel slag in hot mix asphalt
Abstract The growing concern in minimizing the disorderly disposal of waste in nature has been influencing measures that seek to give new environmentally sustainable and economically viable purposes for these materials. The use of steel slag aggregate in road paving emerges as an alternative for reducing the storage of this material in industrial yards, as w
REM, Int. Eng. J.. Publicado em: 2021-01
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4. Seismic resistance performance of a utility tunnel in saline soil foundation based on new cementitious composite materials
Abstract Because soluble salt in saline soil dissolves with water, utility tunnels built in saline soil foundation are more likely to damage due to by groundwater and earthquake. In this study, new cementitious composite materials were developed by using slag, building gypsum, quicklime, and magnesia. The unconfined compressive strengths of the saline soil s
Lat. Am. j. solids struct.. Publicado em: 10/01/2020
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5. Analysis of the chloride diffusion coefficients by different test methods in concrete mixtures containing metakaolin and high-slag blast-furnace cement
ABSTRACT This study aims to evaluate the chloride diffusion coefficient and the service life (SL) of concretes containing metakaolin and high-slag blast-furnace cement (HSBFC). Accelerated methods of chloride ion diffusion and migration (RCPT, RMT, BDT and multiregime test method) were used. To produce the specimens, HSBFC resistant to sulphates (CPIII 40 RS
Matéria (Rio J.). Publicado em: 25/11/2019
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6. Análise da redução da alcalinidade de compósitos cimento-madeira em função da substituição parcial do cimento Portland por pozolanas
RESUMO O objetivo desta pesquisa foi avaliar a redução da alcalinidade de compósitos cimento-madeira, produzido com cimento Portland e partículas residuais de Pinus spp., em função da substituição gradual do cimento Portland pelas pozolanas sílica ativa (SA) metacaulim (MK), cinza volante (CV), escória de alto-forno (EAF), cinza de casca de arroz (
Matéria (Rio J.). Publicado em: 25/11/2019
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7. Copper slag from different dumps in the Atacama Region used in mortars as partial replacement of cement
ABSTRACT The use of copper slag as a partial substitute for cement in mortar preparation was studied. Copper slag samples were collected from three dumps in the Atacama Region (Northern Chile). Mortars of 40x40x160 mm (width, height, length) and curing times of 7, 28 and 90 days were used in mechanical testing. Tests were performed with 0% (control mortar),
Matéria (Rio J.). Publicado em: 10/06/2019
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8. Investigación de diseños de mezcla para producir Ultra High Performance Fiber Reinforced Concrete (UHPFRC) usando ANOVA
ABSTRACT An experimental study is presented to produce Ultra High Performance Fiber Reinforced Concrete (UHPFRC) including industrial waste in the mix, and determine the average compressive strength. The study includes factor arrangements to perform analysis of variance using ANOVA. The controllable factors were: (i) age of the sample; (ii) granulometry of t
Matéria (Rio J.). Publicado em: 10/06/2019
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9. Concretos com agregados reciclados de resíduos de construção e demolição e adições minerais: uma análise bibliográfica
RESUMO Os impactos ambientais causados pela produção do concreto precisam ser reduzidos para torná-lo um material mais sustentável. O uso de agregados reciclados em substituição aos agregados naturais e das adições minerais em substituição parcial ao cimento são alternativas que podem tornar o concreto um material com menor carga de poluentes asso
Matéria (Rio J.). Publicado em: 10/06/2019
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10. Use of electric arc furnace slag for producing concrete paving blocks
Resumo A escória de forno elétrico foi usada como substituto do agregado graúdo natural na produção de peças de pavimentação de concreto. O traço de concreto 1:2:3:0,51 (cimento:areia:agregado graúdo:água) foi definido para alcançar uma resistência à compressão de 35 MPa. Quatro grupos de concreto foram preparados: um traço referência e trê
Ambient. constr.. Publicado em: 2019-04
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11. Avaliação do potencial de utilização da escória granulada de fundição em concreto autoadensável
Resumo O presente estudo propõe um novo uso para a escória granulada de fundição: contribuir para a obtenção da viscosidade adequada em concretos autoadensáveis. Nesse tipo de concreto, em função de sua elevada fluidez, comumente são relatados problemas de segregação e, para contorná-los, podem ser utilizados fillers. A escória granulada é um
Ambient. constr.. Publicado em: 2019-03
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12. Synthetic Aluminosilicates for Geopolymer Production
Abstract The use of geopolymer has been studied as a potential substitute for Portland cement due to lower CO2 emission and improvements on structural properties. Some of the major raw materials used in the manufacture of the geopolymer are: steel slag, fly ash and metakaolinite. Due to the impurities contained in these raw materials, the present study uses
Mat. Res.. Publicado em: 24/01/2019